Advantech's steps to make your Network Securer
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Protection
Personal firewalls and routers help protect personal computers and networks from attacks by examining incoming internet packets, identifying the sending IP address and transmission port, and blocking unauthorized access from unknown or unsafe programs and ports. Firewalls log attempted attacks to identify dangerous ports and prevent intrusions that could steal information, damage the computer, or misuse its resources, while routers include hardware firewalls that safeguard home networks from external internet threats. Taking proactive measures to secure devices provides protection from potential hackers and malicious software.
Domain 4 of CEH V11: Network and Perimeter Hacking
Networks are composed of two or more computers that share resources (such as printers and CDs), exchange files, and allow electronic communications. A network of computers may be connected by cables, telephone lines, radio waves, satellites, or infrared beams.
https://www.infosectrain.com/blog/domain-4-of-ceh-v11-network-and-perimeter-hacking/
Web security
Computer and internet security involves establishing rules and measures to protect systems and data from attacks over the internet. Some key aspects of security include firewalls to control network access, encryption to securely transfer data, and protocols like SSL, TLS, PGP and IPsec which provide authentication and encryption for web traffic, email and networking. Other threats include phishing scams, malware, and denial of service attacks which aim to compromise or disrupt systems. A variety of techniques are used to implement security at different levels including network, transport, and application layers.
Domain 5 of the CEH: Web Application Hacking
Considering that most people have used mobile applications like PUB-G, Instagram, and WhatsApp. I will give you an example of a web application that is also a mobile app. Now assume you’ve lost your mobile or your mobile is switched off, and you are willing to scroll the insta feed. What will you do? Login to your account through Google Chrome. Right? And that’s it, as you can use your Instagram by using a web browser. It is called a web application. A few famous examples of web applications are Facebook, MakeMyTrip, Flipboard, and the 2048 Game.
https://www.infosectrain.com/blog/domain-5-of-the-ceh-web-application-hacking/
HMA
Our service works by virtually changing your online identity to the UK using VPN technology.With HideMyAss.com you can easily bypass such geographical internet blocks and gain access to localized content.http://zelune.net
Ch06 Wireless Network Security
Security+ Guide to Network Security Fundamentals, 3rd Edition, by Mark Ciampa
Knowledge and skills required for Network Administrators and Information Technology professionals to be aware of security vulnerabilities, to implement security measures, to analyze an existing network environment in consideration of known security threats or risks, to defend against attacks or viruses, and to ensure data privacy and integrity. Terminology and procedures for implementation and configuration of security, including access control, authorization, encryption, packet filters, firewalls, and Virtual Private Networks (VPNs).
CNIT 120: Network Security
http://samsclass.info/120/120_S09.shtml#lecture
Policy: http://samsclass.info/policy_use.htm
Many thanks to Sam Bowne for allowing to publish these presentations.
Network security
Network security involves securing computer networks from threats and attacks. There are four main types of attacks: interruption, interception, modification, and fabrication. An attack generally involves initial information gathering, network probing, unauthorized access, capturing the network, and grabbing or destroying data. Intrusion detection systems monitor network activity for signs of intrusion and report alerts. There are two main types of IDS: knowledge-based which uses signatures, and behavior-based which monitors for anomalies. Virtual private networks provide a secure channel over untrusted networks using protocols like SSL and IPSec to authenticate users and encrypt data.
Cyber security
we have disscused what is cyber security how to prevent it and about it and it is protection of data using internet
Recommended
Protection
Personal firewalls and routers help protect personal computers and networks from attacks by examining incoming internet packets, identifying the sending IP address and transmission port, and blocking unauthorized access from unknown or unsafe programs and ports. Firewalls log attempted attacks to identify dangerous ports and prevent intrusions that could steal information, damage the computer, or misuse its resources, while routers include hardware firewalls that safeguard home networks from external internet threats. Taking proactive measures to secure devices provides protection from potential hackers and malicious software.
Domain 4 of CEH V11: Network and Perimeter Hacking
Networks are composed of two or more computers that share resources (such as printers and CDs), exchange files, and allow electronic communications. A network of computers may be connected by cables, telephone lines, radio waves, satellites, or infrared beams.
https://www.infosectrain.com/blog/domain-4-of-ceh-v11-network-and-perimeter-hacking/
Web security
Computer and internet security involves establishing rules and measures to protect systems and data from attacks over the internet. Some key aspects of security include firewalls to control network access, encryption to securely transfer data, and protocols like SSL, TLS, PGP and IPsec which provide authentication and encryption for web traffic, email and networking. Other threats include phishing scams, malware, and denial of service attacks which aim to compromise or disrupt systems. A variety of techniques are used to implement security at different levels including network, transport, and application layers.
Domain 5 of the CEH: Web Application Hacking
Considering that most people have used mobile applications like PUB-G, Instagram, and WhatsApp. I will give you an example of a web application that is also a mobile app. Now assume you’ve lost your mobile or your mobile is switched off, and you are willing to scroll the insta feed. What will you do? Login to your account through Google Chrome. Right? And that’s it, as you can use your Instagram by using a web browser. It is called a web application. A few famous examples of web applications are Facebook, MakeMyTrip, Flipboard, and the 2048 Game.
https://www.infosectrain.com/blog/domain-5-of-the-ceh-web-application-hacking/
HMA
Our service works by virtually changing your online identity to the UK using VPN technology.With HideMyAss.com you can easily bypass such geographical internet blocks and gain access to localized content.http://zelune.net
Ch06 Wireless Network Security
Security+ Guide to Network Security Fundamentals, 3rd Edition, by Mark Ciampa
Knowledge and skills required for Network Administrators and Information Technology professionals to be aware of security vulnerabilities, to implement security measures, to analyze an existing network environment in consideration of known security threats or risks, to defend against attacks or viruses, and to ensure data privacy and integrity. Terminology and procedures for implementation and configuration of security, including access control, authorization, encryption, packet filters, firewalls, and Virtual Private Networks (VPNs).
CNIT 120: Network Security
http://samsclass.info/120/120_S09.shtml#lecture
Policy: http://samsclass.info/policy_use.htm
Many thanks to Sam Bowne for allowing to publish these presentations.
Network security
Network security involves securing computer networks from threats and attacks. There are four main types of attacks: interruption, interception, modification, and fabrication. An attack generally involves initial information gathering, network probing, unauthorized access, capturing the network, and grabbing or destroying data. Intrusion detection systems monitor network activity for signs of intrusion and report alerts. There are two main types of IDS: knowledge-based which uses signatures, and behavior-based which monitors for anomalies. Virtual private networks provide a secure channel over untrusted networks using protocols like SSL and IPSec to authenticate users and encrypt data.
Cyber security
we have disscused what is cyber security how to prevent it and about it and it is protection of data using internet
How to Protect your Wi-Fi from Cyber Hackers
Use a VPN (Virtual Private Network), Look for https as well as a padlock in the URL, Disable automatic sharing,
Wi fi
Wi-Fi allows devices to connect to a wireless network and the internet without cables. There are two main types of wireless encryption keys: WEP and WPA. WEP keys are insecure and can be cracked to reveal the network password. WPA provides stronger encryption security through TKIP or AES methods. The document then demonstrates how to use software tools like CommView and Aircrack to capture network packets and crack a WEP key, concluding that WEP is not secure for encrypted wireless networks.
Computer and network security
The document discusses various topics related to computer and network security including:
- Analysis from 2014 and 2016 revealed an increasing number of malicious cyber attacks and new malware being created daily.
- Cyber attacks cost the UK economy £27 billion per year according to one report, while another survey found UK firms lost £34.1 billion in one year from security incidents.
- Over 1.8 billion web accounts have been hacked according to one website that tracks data breaches. The document provides information on tools and techniques that can be used to hack websites, intercept communications, conduct surveillance and engage in social engineering. It also discusses types of malware like viruses, worms and trojans as well as methods of protection.
Communications security for journalists
The document discusses various methods for securing communications over the internet, including encryption of email, web traffic, and phone calls. It notes that while tools like PGP and encrypted messaging apps can secure content, they do not prevent traffic analysis that can reveal who users are communicating with and when. It recommends using services like Freedom that can hide traffic patterns and provide stronger anonymity when communicating online or over the phone.
Computer Networks 4
This document discusses network security measures such as user access levels, passwords, and encryption techniques. It explains that networks use different user access levels to restrict what users can access and do. Strong passwords that are difficult to guess are important, and suitable passwords should be a minimum length and include a mix of characters. Encryption techniques scramble data with a key so it can only be read by those with the key, and public/private key encryption allows secure communication between devices.
Network Security Presentation
The document provides tips for keeping a network secure, including always keeping virus software and Windows updates enabled, using firewalls, backing up data regularly, and using strong passwords. It warns about common password risks like using obvious words or writing passwords down. The document also covers securing laptops, email, wireless networks, and avoiding risks from open networks. Proper authentication, surge protection, and password protecting are emphasized as important security best practices.
Review unit 2 tecnology 2 eso
Our personal attitude and behavior is the best protection when using the internet. When connecting to search for webpages, a user's computer first connects to an internet service provider who assigns an IP address. The user then opens a browser, types a URL, and their request is sent to a DNS server to locate the corresponding server hosting the requested webpage. The server then sends the webpage back to the user's computer in packets which are reassembled and displayed in their browser. Key tools to enhance security include antivirus software, firewalls, strong passwords, and taking care to avoid phishing, cyberbullying or sharing private information. Everything done online contributes to our digital footprint which traces our digital identity over time.
Network security - Defense in Depth
The document provides an overview of network security threats and countermeasures. It discusses various types of threats like viruses, denial of service attacks, and spoofing. It recommends a defense-in-depth approach using multiple layers of security like firewalls, intrusion detection systems, antivirus software, and encryption. Specific security measures are examined, including network monitoring, access control, and securing servers and applications.
Network Security Chapter 7
The document discusses security issues in networks and distributed systems. It describes possible network security threats like wiretapping, impersonation, message integrity violations, hacking, and denial of service attacks. It also discusses network security controls like encryption and authentication methods. Specifically, it covers Kerberos, PEM, and PGP for authentication and encryption. It describes different types of firewalls - screening routers, proxy gateways, and guards - and their functions in securing networks. However, it notes that firewalls are not complete solutions and have their own security issues.
Hacking- Ethical/ Non-ethical, Cyber Security.
Hacking is the process of attempting to gain or successfully gaining , unauthorized access to computer resources.
Hacking refers to an array of activities which are done to intrude someone else’s personal information so as to use it for malicious , unwanted purposes. Cyber Security.
Spyware risk it's time to get smart
Spyware, meaning of spyware, how to reach your system, devices.
How to affect your devices as well as your life.
Why need to know about that ??
Secret files as well as important file share from your system, devices
Seminar (network security)
This document discusses network security. It covers topics such as why security is important given that the internet was initially designed for connectivity. It describes different types of security including computer, network, and internet security. It discusses security goals and common attacks targeting different layers such as IP, TCP, and DNS. The document also outlines security measures like firewalls, intrusion detection systems, access control, cryptography, public key infrastructure, and IPSec. It concludes with security management topics such as risk management and the Whois database.
Network security desighn principles and authentication
This document discusses network security and principles for data access design. It begins with an introduction to security principles like least privilege, fail-safe defaults, and separation of privilege. It then analyzes systems access and authentication, covering authentication protocols, procedures like two-party authentication, and third-party authentication using Kerberos. The document concludes by identifying phases of penetration testing like profiling, enumeration, vulnerability analysis, and exploitation, with the goal of assessing security and identifying deficiencies.
Spoofing
Web spoofing involves masquerading as another user or program to gain an illegitimate advantage. There are several types of spoofing, including IP spoofing where the sender address is falsified, and web spoofing where an adversary can observe and modify web pages sent to the victim. Defenses include ingress/egress filtering to block spoofed IP addresses, and users verifying URLs and SSL certificates when entering sensitive information online.
Bao cao vpn
A VPN allows remote users to securely access a private network by establishing an encrypted connection over the public internet. There are three main types of VPNs: client access, intranet, and extranet. Security risks include attacks on the transmission line or stealing certificates and keys. To use a VPN, one needs OpenVPN software along with client and server certificates and a password. Additional security measures in OpenVPN include TLS encryption, larger RSA keys, larger symmetric keys, and hardening against DoS attacks and port scanning.
ISDD Security Precautions
Anti-virus software scans files to identify viruses by matching signatures of previously discovered viruses. It offers real-time protection and scheduled scans, and can delete or quarantine infected files. Passwords are commonly used with usernames to authenticate users, and should be at least 8 characters long without including personal details. Biometrics authenticate users using unique biological traits like fingerprints, iris patterns, or facial recognition. Encryption converts data into an unreadable format, while decryption reverses the process, and different encryption methods include symmetric, asymmetric, and digital signatures.
ISDD - Security Risks
The document discusses various types of online fraud and identity theft, including goods not being delivered after payment, purchases made with stolen credit cards, loan and money transfer scams, and dating or holiday fraud. It also describes identity theft as using someone's personal information to impersonate them, and defines true name fraud and account takeover. The document then provides tips for protecting against online threats like avoiding sharing personal details or responding to suspicious emails, as well as maintaining antivirus software. It goes on to define spyware, keylogging, phishing, and denial of service attacks, explaining how to identify and mitigate these risks.
Internet terms
The document defines and provides examples of 22 common internet terms: adware, ISP, cloud storage, search engine, cookie, firewall, data-mining, denial of service attack, malware, net neutrality, P2P, pharming, phishing, spam, spyware, Trojan horse, virus, worm, domain name, meta tag, modem, and netiquette. It explains that adware is software with advertisements, an ISP provides internet access, cloud storage saves data online, search engines help find information, cookies store user data on websites, and a firewall protects networks from unauthorized access. It also outlines how data-mining finds relationships in data, denial of service attacks disrupt internet sites,
File Security System_2
This document describes a file security system that uses encryption to secure files. It discusses the objectives of securing files from unauthorized users and maintaining confidentiality. The system uses encryption and decryption techniques, including symmetric-key and asymmetric-key encryption. It implements these techniques across three modules: input, process, and output. The system encrypts files using the AES encryption algorithm before outputting the encrypted file.
Basics of Network Security
This document defines network and information security and discusses various threats. It defines security as protecting systems, hardware, information and data. It outlines the principles of confidentiality, integrity and availability. It describes passive attacks like traffic analysis and active attacks like masquerading, replay and denial of service. It discusses vulnerabilities like malicious software, trap doors, logic bombs, Trojan horses, viruses and worms. It provides details on each of these threats and ways to prevent infections from malicious software.
write a review about wired Network Security -Network vulnerabilities -.docx
write a review about wired Network Security
-Network vulnerabilities
-Categories of attack
-Types of attacks
- Methods of etwork Attacks
-Network Defense
Your reviewe should be no more than 250 words.
Solution
1.Network Vulnerabilities:
vulnerability is a weakness which allows an attacker to access data in the system.
Vulnerabiltiies are related to hardware,software,network,physical site and organizational.
Hardware vulnerabilites include susceptibility to humidity,dust,soiling and unprotected storage.
Software Vulnerabilities include insufficient testing and lack of audit trail.
Network vulnerability will occur due to communication lines and network architecutre
2)Categories of attacks:
An attack can be active or passive.
An \"active attack\" attempts to alter system resources or affect their operation.Example:DOS, spoffing
A \"passive attack\" attempts to learn or make use of information from the system but does not affect system resources.Example: Wiretapping,port scan,Idle Scan
3) Types of attacks:
i) Denial-of-Service Attack:
Sends invalid data to applications or network services, which causes abnormal termination or behavior of the applications or services.
Flood a computer or the entire network with traffic until a shutdown occurs because of the overload.
ii)Sniffer Attack
A sniffer is an application or device that can read, monitor, and capture network data exchanges and read network packets. If the packets are not encrypted, a sniffer provides a full view of the data inside the packet.
iii)Password cracking :
In this the attacker try to get the password of a user or administrator on a network and gain unauthorized access.
4.Methods of network Attacks:
In this we need to consider active attacks. The network attacks are:
5.Network Defense: It is the process of protecting the network from vulnerabilities. Knowledge of different types of attacks are necessary to protect the network.
Various types of Defenses are:
Static ARP entries: IP address-to-MAC address mappings in the local ARP cache may be statically entered so that hosts ignore all ARP reply packets. Static entries provide some security against spoofing if the operating system handles them correctly.
OS security:Various Operating systems provides different types of security for the computer in the network. For example: Linux ignores unsolicited replies, but on the other hand users see requests from other machines to update its cache. Solaris accepts updates on entries only after a timeout
.
Hacking Cisco
The document discusses various reconnaissance and access attacks against Cisco networks, as well as countermeasures. It covers passive sniffing, port scans, ping sweeps, password attacks, trust exploitation, IP spoofing, DHCP/ARP attacks, and DoS/DDoS attacks. Defenses include switched networks, encryption, firewall rules, DHCP snooping, dynamic ARP inspection, rate limiting, and storm control.
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How to Protect your Wi-Fi from Cyber Hackers
Use a VPN (Virtual Private Network), Look for https as well as a padlock in the URL, Disable automatic sharing,
Wi fi
Wi-Fi allows devices to connect to a wireless network and the internet without cables. There are two main types of wireless encryption keys: WEP and WPA. WEP keys are insecure and can be cracked to reveal the network password. WPA provides stronger encryption security through TKIP or AES methods. The document then demonstrates how to use software tools like CommView and Aircrack to capture network packets and crack a WEP key, concluding that WEP is not secure for encrypted wireless networks.
Computer and network security
The document discusses various topics related to computer and network security including:
- Analysis from 2014 and 2016 revealed an increasing number of malicious cyber attacks and new malware being created daily.
- Cyber attacks cost the UK economy £27 billion per year according to one report, while another survey found UK firms lost £34.1 billion in one year from security incidents.
- Over 1.8 billion web accounts have been hacked according to one website that tracks data breaches. The document provides information on tools and techniques that can be used to hack websites, intercept communications, conduct surveillance and engage in social engineering. It also discusses types of malware like viruses, worms and trojans as well as methods of protection.
Communications security for journalists
The document discusses various methods for securing communications over the internet, including encryption of email, web traffic, and phone calls. It notes that while tools like PGP and encrypted messaging apps can secure content, they do not prevent traffic analysis that can reveal who users are communicating with and when. It recommends using services like Freedom that can hide traffic patterns and provide stronger anonymity when communicating online or over the phone.
Computer Networks 4
This document discusses network security measures such as user access levels, passwords, and encryption techniques. It explains that networks use different user access levels to restrict what users can access and do. Strong passwords that are difficult to guess are important, and suitable passwords should be a minimum length and include a mix of characters. Encryption techniques scramble data with a key so it can only be read by those with the key, and public/private key encryption allows secure communication between devices.
Network Security Presentation
The document provides tips for keeping a network secure, including always keeping virus software and Windows updates enabled, using firewalls, backing up data regularly, and using strong passwords. It warns about common password risks like using obvious words or writing passwords down. The document also covers securing laptops, email, wireless networks, and avoiding risks from open networks. Proper authentication, surge protection, and password protecting are emphasized as important security best practices.
Review unit 2 tecnology 2 eso
Our personal attitude and behavior is the best protection when using the internet. When connecting to search for webpages, a user's computer first connects to an internet service provider who assigns an IP address. The user then opens a browser, types a URL, and their request is sent to a DNS server to locate the corresponding server hosting the requested webpage. The server then sends the webpage back to the user's computer in packets which are reassembled and displayed in their browser. Key tools to enhance security include antivirus software, firewalls, strong passwords, and taking care to avoid phishing, cyberbullying or sharing private information. Everything done online contributes to our digital footprint which traces our digital identity over time.
Network security - Defense in Depth
The document provides an overview of network security threats and countermeasures. It discusses various types of threats like viruses, denial of service attacks, and spoofing. It recommends a defense-in-depth approach using multiple layers of security like firewalls, intrusion detection systems, antivirus software, and encryption. Specific security measures are examined, including network monitoring, access control, and securing servers and applications.
Network Security Chapter 7
The document discusses security issues in networks and distributed systems. It describes possible network security threats like wiretapping, impersonation, message integrity violations, hacking, and denial of service attacks. It also discusses network security controls like encryption and authentication methods. Specifically, it covers Kerberos, PEM, and PGP for authentication and encryption. It describes different types of firewalls - screening routers, proxy gateways, and guards - and their functions in securing networks. However, it notes that firewalls are not complete solutions and have their own security issues.
Hacking- Ethical/ Non-ethical, Cyber Security.
Hacking is the process of attempting to gain or successfully gaining , unauthorized access to computer resources.
Hacking refers to an array of activities which are done to intrude someone else’s personal information so as to use it for malicious , unwanted purposes. Cyber Security.
Spyware risk it's time to get smart
Spyware, meaning of spyware, how to reach your system, devices.
How to affect your devices as well as your life.
Why need to know about that ??
Secret files as well as important file share from your system, devices
Seminar (network security)
This document discusses network security. It covers topics such as why security is important given that the internet was initially designed for connectivity. It describes different types of security including computer, network, and internet security. It discusses security goals and common attacks targeting different layers such as IP, TCP, and DNS. The document also outlines security measures like firewalls, intrusion detection systems, access control, cryptography, public key infrastructure, and IPSec. It concludes with security management topics such as risk management and the Whois database.
Network security desighn principles and authentication
This document discusses network security and principles for data access design. It begins with an introduction to security principles like least privilege, fail-safe defaults, and separation of privilege. It then analyzes systems access and authentication, covering authentication protocols, procedures like two-party authentication, and third-party authentication using Kerberos. The document concludes by identifying phases of penetration testing like profiling, enumeration, vulnerability analysis, and exploitation, with the goal of assessing security and identifying deficiencies.
Spoofing
Web spoofing involves masquerading as another user or program to gain an illegitimate advantage. There are several types of spoofing, including IP spoofing where the sender address is falsified, and web spoofing where an adversary can observe and modify web pages sent to the victim. Defenses include ingress/egress filtering to block spoofed IP addresses, and users verifying URLs and SSL certificates when entering sensitive information online.
Bao cao vpn
A VPN allows remote users to securely access a private network by establishing an encrypted connection over the public internet. There are three main types of VPNs: client access, intranet, and extranet. Security risks include attacks on the transmission line or stealing certificates and keys. To use a VPN, one needs OpenVPN software along with client and server certificates and a password. Additional security measures in OpenVPN include TLS encryption, larger RSA keys, larger symmetric keys, and hardening against DoS attacks and port scanning.
ISDD Security Precautions
Anti-virus software scans files to identify viruses by matching signatures of previously discovered viruses. It offers real-time protection and scheduled scans, and can delete or quarantine infected files. Passwords are commonly used with usernames to authenticate users, and should be at least 8 characters long without including personal details. Biometrics authenticate users using unique biological traits like fingerprints, iris patterns, or facial recognition. Encryption converts data into an unreadable format, while decryption reverses the process, and different encryption methods include symmetric, asymmetric, and digital signatures.
ISDD - Security Risks
The document discusses various types of online fraud and identity theft, including goods not being delivered after payment, purchases made with stolen credit cards, loan and money transfer scams, and dating or holiday fraud. It also describes identity theft as using someone's personal information to impersonate them, and defines true name fraud and account takeover. The document then provides tips for protecting against online threats like avoiding sharing personal details or responding to suspicious emails, as well as maintaining antivirus software. It goes on to define spyware, keylogging, phishing, and denial of service attacks, explaining how to identify and mitigate these risks.
Internet terms
The document defines and provides examples of 22 common internet terms: adware, ISP, cloud storage, search engine, cookie, firewall, data-mining, denial of service attack, malware, net neutrality, P2P, pharming, phishing, spam, spyware, Trojan horse, virus, worm, domain name, meta tag, modem, and netiquette. It explains that adware is software with advertisements, an ISP provides internet access, cloud storage saves data online, search engines help find information, cookies store user data on websites, and a firewall protects networks from unauthorized access. It also outlines how data-mining finds relationships in data, denial of service attacks disrupt internet sites,
File Security System_2
This document describes a file security system that uses encryption to secure files. It discusses the objectives of securing files from unauthorized users and maintaining confidentiality. The system uses encryption and decryption techniques, including symmetric-key and asymmetric-key encryption. It implements these techniques across three modules: input, process, and output. The system encrypts files using the AES encryption algorithm before outputting the encrypted file.
Basics of Network Security
This document defines network and information security and discusses various threats. It defines security as protecting systems, hardware, information and data. It outlines the principles of confidentiality, integrity and availability. It describes passive attacks like traffic analysis and active attacks like masquerading, replay and denial of service. It discusses vulnerabilities like malicious software, trap doors, logic bombs, Trojan horses, viruses and worms. It provides details on each of these threats and ways to prevent infections from malicious software.
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Network security desighn principles and authentication
Network security desighn principles and authentication
Similar to Advantech's steps to make your Network Securer
write a review about wired Network Security -Network vulnerabilities -.docx
write a review about wired Network Security
-Network vulnerabilities
-Categories of attack
-Types of attacks
- Methods of etwork Attacks
-Network Defense
Your reviewe should be no more than 250 words.
Solution
1.Network Vulnerabilities:
vulnerability is a weakness which allows an attacker to access data in the system.
Vulnerabiltiies are related to hardware,software,network,physical site and organizational.
Hardware vulnerabilites include susceptibility to humidity,dust,soiling and unprotected storage.
Software Vulnerabilities include insufficient testing and lack of audit trail.
Network vulnerability will occur due to communication lines and network architecutre
2)Categories of attacks:
An attack can be active or passive.
An \"active attack\" attempts to alter system resources or affect their operation.Example:DOS, spoffing
A \"passive attack\" attempts to learn or make use of information from the system but does not affect system resources.Example: Wiretapping,port scan,Idle Scan
3) Types of attacks:
i) Denial-of-Service Attack:
Sends invalid data to applications or network services, which causes abnormal termination or behavior of the applications or services.
Flood a computer or the entire network with traffic until a shutdown occurs because of the overload.
ii)Sniffer Attack
A sniffer is an application or device that can read, monitor, and capture network data exchanges and read network packets. If the packets are not encrypted, a sniffer provides a full view of the data inside the packet.
iii)Password cracking :
In this the attacker try to get the password of a user or administrator on a network and gain unauthorized access.
4.Methods of network Attacks:
In this we need to consider active attacks. The network attacks are:
5.Network Defense: It is the process of protecting the network from vulnerabilities. Knowledge of different types of attacks are necessary to protect the network.
Various types of Defenses are:
Static ARP entries: IP address-to-MAC address mappings in the local ARP cache may be statically entered so that hosts ignore all ARP reply packets. Static entries provide some security against spoofing if the operating system handles them correctly.
OS security:Various Operating systems provides different types of security for the computer in the network. For example: Linux ignores unsolicited replies, but on the other hand users see requests from other machines to update its cache. Solaris accepts updates on entries only after a timeout
.
Hacking Cisco
The document discusses various reconnaissance and access attacks against Cisco networks, as well as countermeasures. It covers passive sniffing, port scans, ping sweeps, password attacks, trust exploitation, IP spoofing, DHCP/ARP attacks, and DoS/DDoS attacks. Defenses include switched networks, encryption, firewall rules, DHCP snooping, dynamic ARP inspection, rate limiting, and storm control.
Oss web application and network security
The document provides an overview of web application and network security. It begins with definitions of web applications and how requests are made via protocols like HTTP and HTTPS. It then covers common security attacks such as denial of service attacks, TCP hijacking, and packet sniffing. The document discusses countermeasures for these attacks like firewalls, intrusion detection systems, and encryption. It also covers vulnerabilities in web applications like SQL injection, cross-site scripting, and input validation issues. The key information is on common security attacks against web applications and networks and their corresponding countermeasures.
Computersystemssecurity 090529105555-phpapp01
Computer security involves protecting digital information and systems from theft or damage. Common threats include hackers, viruses, spyware, and identity theft. Effective security uses encryption, firewalls, antivirus software, strong passwords, and user awareness. Security measures should be appropriate for the type of network, such as basic protections for homes and strong physical security for government systems.
Computer Systems Security
Computer systems security involves protecting digital information from threats like identity theft, hackers, viruses, and data breaches. Key aspects of security include encryption, firewalls, VPNs, email security, web security, wireless security, and securing applications and computers. Proper security requires awareness of threats and using tools like antivirus software, firewalls, access controls, encryption, and regular updates and backups.
IS Security Presentation
This is created for a presentation in IS Security. Hope this will helpful for you also.
Regards
Renjith , CISA CISSP
Ch04 Network Vulnerabilities and Attacks
Security+ Guide to Network Security Fundamentals, 3rd Edition, by Mark Ciampa
Knowledge and skills required for Network Administrators and Information Technology professionals to be aware of security vulnerabilities, to implement security measures, to analyze an existing network environment in consideration of known security threats or risks, to defend against attacks or viruses, and to ensure data privacy and integrity. Terminology and procedures for implementation and configuration of security, including access control, authorization, encryption, packet filters, firewalls, and Virtual Private Networks (VPNs).
CNIT 120: Network Security
http://samsclass.info/120/120_S09.shtml#lecture
Policy: http://samsclass.info/policy_use.htm
Many thanks to Sam Bowne for allowing to publish these presentations.
Refer the attached docs to understand Min 250 wordsSelect O.docx
Refer the attached docs to understand: Min 250 words
Select ONE of the following security incidents and provide the following information:
1. A SQL Injection was performed by a hacker, resulting in the loss of PII data.
2. You have discovered a covert leak (exfiltration) of sensitive data to China.
3. Malcious code or malware was reported on multiple users' systems.
4. Remote access for an internal user was compromised - resulting in the loss of PII data.
5. Wireless access. You discovered an "evil twin" access point that resulted in many of your users connecting to the hacker's access point while working with sensitive data.
6. Compromised passwords. You discovered that an attacker used rainbow tables to attack your domain's password file in an offline attack. Assume that all of your user's passwords are compromised.
7. A DoS or DDoS was performed against your system, resulting in the loss of 3 hours of downtime and lost revenue.
Paragraph 1: IRT Team
. What would the IRT team look like for this incident (who would be on the team to be able to effectively handle the event)? Justify your choices.
Paragraph 2:
Approach. Address HOW you would respond. What logs or tools would you use to identify/analyze the incident? What would alert you to the incident? What tools would you use to contain/recover from the incident?
Paragraph 3:
Metrics. Who would you measure your team's response effectivenss? What measurements/metrics would you track?
.
Hack the hack
This document provides an overview of hacking and computer security. It discusses what hacking is, different types of hackers like black hats and white hats. It describes basic hacking skills, general hacking methods, and terms like spoofing. The document outlines how to find target IP addresses through instant messengers, email headers, and dangers of exposing IP addresses. It discusses denial of service attacks, sniffers, trojans and other common attack types. The document also touches on ethical hacking versus criminal hacking and being prepared against intruders.
network security / information security
power point presentation for national level technical seminar in 2013 featuring network security in limelight
ip spoofing
IP spoofing involves lying about the source IP address in network packets. This allows an attacker to conduct various types of attacks, such as session hijacking, denial of service attacks, and spoofing attacks. Notable examples include Kevin Mitnick's 1994 attack on Tsutomu Shinomura where he determined the victim's TCP sequence number algorithm, and session hijacking attacks where the attacker can eavesdrop or take over communications between two parties. Defenses against IP spoofing involve making it more difficult for attackers to guess sequence numbers or determine addressing patterns if they are blind on the network. However, IP spoofing continues to evolve as a threat as long as different layers of the internet architecture implicitly trust each other.
Web Application Security
The document summarizes key points about web application security vulnerabilities and how to address them. It discusses common vulnerabilities like parameter manipulation, cross-site scripting, and SQL injection that occur due to improper validation of user input. It emphasizes the importance of validating all user input on the server-side to prevent attacks, and not storing sensitive values in cookies or hidden form fields that can be manipulated by attackers.
Sreerag cs network security
The document discusses security threats in client-server networks and e-commerce. It describes two main types of security concerns: client-server security which uses authorization to control access to resources, and data/transaction security which ensures privacy of electronic communications. Common threats include unauthorized access, software vulnerabilities, and inconsistent access control configurations. Suggested countermeasures include access control methods like passwords and encryption, as well as firewalls to filter network traffic.
Positive Hack Days. Gurzov. VOIP - Reduce Your Expenses, Increase Your Income...
Integrated services by telecom operators and Unified Communications technology promise a quick payback and great convenience. However, it was discovered from practice that VOIP and IPPBX services can cause many problems, first of all relating to information security and fraud. What information security issues can arise for a company if Unified Communications are used? VOIP/PBX/MGW broken in 60 seconds - is it possible? Effective methods and practicalities of Unified Communications security will be discussed.
Ch13 Protecting Networks with Security Devices
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Ehical Hacking: Unit no. 1 Information and Network Security
T.Y.B.Sc. (Computer Science)
Ethical Hacking
Unit 1
Introduction to information security
Types of malware
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Chapter_Five[1].ppt
The document discusses various security mechanisms and techniques including firewalls, proxy servers, and intrusion detection systems (IDS). It provides details on how firewalls, proxy servers, and IDS work to enhance network security. Firewalls can be hardware-based or software-based and inspect packets to determine if they should be allowed through or blocked. Proxy servers act as intermediaries and filter or block traffic based on rules. IDS monitors network traffic and system activities to detect intrusions and security breaches.
Ericas-Security-Plus-Study-Guide
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- Symmetric and asymmetric encryption algorithms including AES, DES, RSA, and Diffie-Hellman.
- Network security devices like firewalls, routers, switches and their functions.
- Common ports and protocols including FTP, SSH, SMTP, HTTP, SNMP, LDAP.
- Authentication methods like Kerberos, CHAP, certificates, usernames/passwords and tokens.
- Other security concepts and attacks like hashing, PKI, DoS, spoofing, replay and man-in-the-middle.
- Access controls including MAC, DAC, RBAC and their characteristics.
Ethical Hacking: Safeguarding Systems through Responsible Security Testing
This PowerPoint presentation provides an in-depth exploration of ethical hacking, a crucial practice in the realm of cybersecurity. Ethical hacking involves authorized and controlled attempts to identify vulnerabilities in computer systems, networks, or applications to strengthen overall security. The presentation covers key aspects such as legal considerations, the ethical framework, methodologies, and best practices for conducting ethical hacking.
Similar to Advantech's steps to make your Network Securer (20)
write a review about wired Network Security -Network vulnerabilities -.docx
write a review about wired Network Security -Network vulnerabilities -.docx
Refer the attached docs to understand Min 250 wordsSelect O.docx
Refer the attached docs to understand Min 250 wordsSelect O.docx
Positive Hack Days. Gurzov. VOIP - Reduce Your Expenses, Increase Your Income...
Positive Hack Days. Gurzov. VOIP - Reduce Your Expenses, Increase Your Income...
Ehical Hacking: Unit no. 1 Information and Network Security
Ehical Hacking: Unit no. 1 Information and Network Security
Ethical Hacking: Safeguarding Systems through Responsible Security Testing
Ethical Hacking: Safeguarding Systems through Responsible Security Testing
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Advantech's steps to make your Network Securer
- 1. Security Pack Roger Cheng 3 Steps to Make Your Network Securer
- 2. Connectivity allows one to more easily access the network to perform data exchange based on software and hardware Connectivity also provides a means for hackers to intrude the network and make threats aimed to compromise confidentiality, integrity and availability Why Network Security is Becoming More Important? Data Software Hardware
- 3. Security Pack Access Control List How Do I Benefit From Network Security Of EKI? IP Security Login AuthenticationNetwork Access Control
- 4. HTTPS, SSH – A cryptographic network protocol makes data exchange become unreadable – It avoid the leakage of user account and configuration Step 1 – Protect Your Switch ??
- 5. IP Source Guard – Legal host with known IP and MAC address is bundled on a specific port to access the network Step 2 – Prevent Unauthorized Network Access MAC IP Correct IP/MAC Incorrect IP/MAC
- 6. IP Source Guard (cont.) – IP-MAC-Port permit list (white list) Step 2 – Prevent Unauthorized Network Access (cont.)
- 7. DHCP Snooping – Legal host obtains IP address successfully from DHCP server and be added into IP-MAC-Port permit list automatically Step 2 – Prevent Unauthorized Network Access (cont.) Without DHCP Snooping With DHCP Snooping DHCP Packet DHCP Packet Illegal host with self-configured IP address Illegal host with self-configured IP address
- 8. Access Control List – Illegal frames with specific content are dropped – Drop list (black list) Step 3 – Protect Network Resource Frames with Legal content Frames with Illegal content ? Not found
- 9. DoS (Denial of Service) Attack Prevention – A huge number of frames make malicious operation continuously to paralysis the data server connected to the network – Identify and drop these frames Step 3 – Protect Network Resource (cont.) DoS Attack DoS Attack With DoS Attack Prevention Without DoS Attack Prevention Normal Operation Abnormal Operation Freeze! Smooth
- 10. Thank You 10% 29% 31% 30% 0 100 200 300 400 500 600 700 A B C D E F Morbi fermen tum justo. TEXT 1 TEXT 2 Lorem ipsum dolor sit. Morbi fermen tum justo. Lorem ipsum dolor sit. TEXT 3 TEXT 4