Policy
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Netiquette and security policies define rules for appropriate online behavior and securing wireless networks. A security policy outlines how networks are configured and managed, including protocols, passwords, physical security, and acceptable use. Securing wireless networks requires a defense-in-depth strategy with multiple overlapping security measures, such as reducing the wireless signal range, disabling SSID broadcasts, implementing MAC address filtering, using the strongest encryption standard, creating an acceptable use policy, and monitoring the network for threats.
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Layer 0 discusses why security matters and risks like rogue access points and data loss. Layer 1 covers securing the physical and wireless environment. Layer 2 focuses on protecting data by securing the 802.11 protocol, authenticating devices and users, and encrypting traffic. Layer 3 is about securing the network layer through segmentation, application control, and role-based access policies. Layer 4 involves securely managing the network through monitoring, configuration control, and user access management. Finally, Layer 5 discusses auditing activities, configurations, and keeping records to ensure compliance.
Security policy case study
The document summarizes the components, purpose, and strategies of a security policy for T.Z.A.S.P. Mandal's Pragati College. It discusses the need for security policies to protect data, networks, and computing resources. The key components outlined include access policies, privacy policies, and guidelines for acceptable use, purchasing, authentication, availability, and violation reporting. Strategies discussed are host security, user authentication, password protection, firewalls, demilitarized zones, and encryption. The purpose is to inform users of security requirements and provide a baseline for compliance.
White paper - Building Secure Wireless Networks
This white paper discusses building a secure wireless LAN through a holistic security approach. It emphasizes considering security across the entire network, from wireless privacy and authentication to network firewalls, intrusion detection, and compliance. It provides guidelines for deploying a secure WLAN, including using wireless encryption, strong authentication methods, client management, and identity-based access controls.
A Complete Guide To Firewall How To Build A Secure Networking System.pptx
In today's interconnected world, the value of a secure networking system cannot be overstated. In a digital landscape where businesses
https://www.bluechip-gulf.ae/guide-firewall-build-secure-networking-system/
Secure your workloads with microsegmentation
The document discusses the future of cyber security and securing workloads in hybrid and multi-cloud environments. It notes challenges around evolving threats, security operations, and compliance. It also discusses priorities for business executives around providing transparency, applying business context to network activity, and simplifying operations and compliance reporting. Methods for securing workloads mentioned include microsegmentation, threat control, and visibility.
SECURITY and PRINCIPLES IN 5G Technologies.pptx
I. Design Principles for 5G Security
II. Cyber Security Business Models in 5G
III. Physical Layer Security
IV. 5G WLAN Security
V. Safety of 5G Network Physical Infrastructures
IRJET- Data Security in Local Network for Mobile using Distributed Firewalls
Distributed firewalls provide data security in local networks by filtering network traffic according to security policies defined at a central management server. Distributed firewalls are host-resident software installed on endpoints that protect the entire network from internal and external threats. The central management server defines and distributes security policies to endpoints using pull or push techniques. Distributed firewalls offer advantages over traditional firewalls like topological independence and ability to filter protocols like FTP at endpoints. However, distributed firewalls also have disadvantages like reduced effectiveness of intrusion detection if the central management server is compromised and difficulty implementing intrusion detection across the entire network.
Wireless Security
This document discusses wireless network security. It describes three types of wireless networks: WPANs, WLANs, and GANs. It then discusses the components of wireless networks, vulnerabilities and threats such as rogue access points and man-in-the-middle attacks. The document outlines measures to secure wireless transmissions including encrypting traffic, securing access points and wireless client devices, and changing default passwords. Securing wireless networks involves using encryption, anti-virus software, keeping devices updated, and turning off networks when not in use.
Software Defined Networks - Unit -1- class lecture notes.pdf
Software-defined networking (SDN) is an approach to network management that enables network administrators to programmatically control network behavior directly from software applications, rather than through the hardware infrastructure. In traditional network architectures, such as those based on routers and switches, network control and forwarding functions are tightly coupled. SDN decouples these functions, allowing network control to become directly programmable and the underlying infrastructure to be abstracted for applications and network services.
Key components of SDN include:
SDN Controller: The central component of an SDN architecture, the controller is responsible for managing the flow control to facilitate network traffic. It provides a centralized view of the network and communicates with network devices using southbound APIs (Application Programming Interfaces).
Southbound APIs: These interfaces allow the SDN controller to communicate with the data plane devices, such as switches and routers, to configure and manage their behavior. Examples of southbound APIs include OpenFlow, NETCONF, and RESTful APIs.
Northbound APIs: These interfaces expose the functionality of the SDN controller to higher-layer applications and orchestration systems. They enable applications to interact with the SDN controller to implement network policies and services. Northbound APIs can vary depending on the specific SDN controller platform.
Network Devices: These are the switches, routers, and other network devices that forward traffic based on instructions received from the SDN controller. In an SDN architecture, these devices typically have simplified forwarding functionalities compared to traditional networking equipment.
How to create a secure network architecture.pdf
As technology evolves, threats aiming to compromise critical information and disrupt business operations are becoming increasingly sophisticated. A robust and well-designed network architecture is essential for protecting the security, integrity, and availability of important data.
Wireless securit1
Wireless security is an important aspect of any wireless network. Wireless networks are susceptible to security breaches that could be accidental. This is why wireless security is so important. Anyone who is close to the wireless network can detect a wireless signal if they have the correct receiver. Security of wireless networks is a concern, regardless of whether they are intended for office or home use.
Zero trust model for cloud computing.pptx
The document discusses the need for a zero trust assessment of a telco cloud infrastructure due to increased security risks from expanded attack surfaces. It describes the pillars of a zero trust approach - identity, devices, networks, applications, data, and observability - and different maturity levels. A zero trust assessment would evaluate identity and access management, network segmentation, data protection, continuous monitoring and analytics, and policy enforcement to enhance the security of a telco cloud.
Security standard
This document discusses various wireless network security threats such as war driving, rogue access points, man-in-the-middle attacks, and denial-of-service attacks. It also explains the evolution of wireless security protocols from WEP to WPA and WPA2. WEP was the initial standard but had flaws that allowed the key to be cracked easily. WPA was an interim solution that added features to strengthen WEP, while WPA2 fully implements the ratified IEEE 802.11i standard and is considered the current best practice using AES encryption. The document also warns that the Wi-Fi Protected Setup standard has a security flaw and its use should be disabled.
DTS Solution - Crypto Flow Segmentation addressing NESA IAF and ISO27001 comp...
This document discusses how Crypto-Flow segmentation and encryption can help organizations comply with various security standards and regulations. It provides examples of how Crypto-Flow can be used to encrypt data in transit for ISO27001, PCI-DSS, IEC 62443, NESA, and the Cloud Security Alliance guidelines. It also outlines best practices for key management and testing the security of implemented encryption controls.
5G Security Briefing
A detailed look at 5G security by experts from wenovator, Dr. Anand R. Prasad & Hans Christian Rudolph.
This webinar covers:
(1) 5G security
(2) Private networks security and
(3) Open vRAN security
To learn more about wenovator, visit their website: https://www.wenovator.com/
All our #3G4G5G slides and videos are available at:
Videos: https://www.youtube.com/3G4G5G
Slides: https://www.slideshare.net/3G4GLtd
Security Page: https://www.3g4g.co.uk/Security/
5G Page: https://www.3g4g.co.uk/5G/
Security Blog Posts: https://blog.3g4g.co.uk/search/label/Security
Free Training Videos: https://www.3g4g.co.uk/Training/
IT Network Security Policy
This document outlines an IT network security policy for a trust. It defines controls to help ensure confidentiality, integrity and availability of information on the network. It covers: responsibilities of information security managers to protect the network; annual risk assessments of the network; physical security measures for network equipment; access controls for trust staff, third parties, and wireless access; software installation restrictions; data backup and restoration procedures; and an acceptable use policy for removable media.
How To Protect Your Network with Firewall Security?
In this PDF We discuss about how to protect your network with firewall Security. Techno Edge Systems LLC offers the most sophisticated Supplier of Firewall Solutions in Dubai. For More info Contact us: +971-54-4653108 Visit us: https://www.itamcsupport.ae/services/firewall-solutions-in-dubai/
Implementing an improved security for collin’s database and telecommuters
1) COLLINS is a state agency that stores confidential information and needs improved security for its database and telecommuters.
2) The proposal aims to implement the best security measures to protect data in the database and ensure security for telecommuters.
3) Methods like installing firewalls, encrypting sensitive data, and using digital signatures are proposed to provide database and network security.
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A Complete Guide To Firewall How To Build A Secure Networking System.pptx
A Complete Guide To Firewall How To Build A Secure Networking System.pptx
IRJET- Data Security in Local Network for Mobile using Distributed Firewalls
IRJET- Data Security in Local Network for Mobile using Distributed Firewalls
Software Defined Networks - Unit -1- class lecture notes.pdf
Software Defined Networks - Unit -1- class lecture notes.pdf
DTS Solution - Crypto Flow Segmentation addressing NESA IAF and ISO27001 comp...
DTS Solution - Crypto Flow Segmentation addressing NESA IAF and ISO27001 comp...
How To Protect Your Network with Firewall Security?
How To Protect Your Network with Firewall Security?
Implementing an improved security for collin’s database and telecommuters
Implementing an improved security for collin’s database and telecommuters
More from lyndyv
Datarate
Bandwidth refers to the maximum possible data transfer rate, measured in bits per second, while data rate refers to the actual speed achieved, which can be lower due to interference or congestion. Common wireless networking standards specify maximum bandwidths, with newer standards like 802.11ac providing higher speeds up to 1300 Mbps.
Logging
Logging records information about network traffic and messages processed by a router. This allows monitoring of protocols, ports, IP addresses, URLs, and times used. Logs are used for security purposes like ensuring only permitted traffic enters the network and detecting threats. They also verify inside users comply with security policies. Logs must be securely stored and access restricted to prevent unauthorized changes and protect any evidence. Logs can also be analyzed for capacity planning to identify traffic trends and predict future network usage.
Capacity
Capacity planning for a wireless network involves estimating the number of devices and users that will be connecting, determining the bandwidth requirements of applications being used based on location and data flows, monitoring network growth over time, and ensuring the network has sufficient bandwidth to handle traffic from hosted internet servers and expected data flows from both internal and external users.
Auth and association
Beacons broadcast the available SSIDs, probes request specific SSIDs, and authentication and association establish a connection. A client discovers SSIDs via beacons, requests a specific one with probes, and authenticates and associates with an access point to join the network. Open authentication uses null verification while shared key uses WEP encryption. Association maps the client to a logical port on the access point, completing the join process.
Dhcp
DHCP is a network protocol that dynamically assigns IP addresses and other network configuration settings to hosts on a network. The DHCP server runs on network devices like routers and domain controllers and assigns IP addresses from a configurable pool to client hosts that request them. When a client boots up or changes to automatic addressing, it will broadcast a request for an IP address and the DHCP server will respond with an offered address configuration which the client accepts to complete the DHCP process.
Port forward
Port forwarding allows remote hosts on the internet to connect to servers on a local network by forwarding incoming connection requests on specific ports to IP addresses and ports of servers on the local network. When a request comes in on a forwarded port, the router checks for a matching forwarding rule and sends the request to the specified internal IP address and port if there is a match, otherwise it drops the request. Port triggers open ports temporarily based on outgoing traffic to allow return connections for things like mail identity information or online gaming.
Nat
Network Address Translation (NAT) allows private IP addresses on an inside network to be translated to public IP addresses when communicating with outside networks. Private IP addresses defined in RFC 1918 are illegal on the public internet. NAT is commonly used by home and small office routers to allow multiple private devices to share a single public IP address. Common NAT types include dynamic NAT, port address translation (PAT), and static NAT for servers. NAT extends the lifetime of IPv4 addresses but can cause issues for some applications.
Mac addressfilters
The MAC address is a unique identifier for network adapters that is allocated by the manufacturer. It is 48 bits long and written in hexadecimal notation. A device can have multiple adapters, each with its own MAC address. Switches and access points map MAC addresses to physical ports and wireless clients. The MAC address identifies each device on a local area network and can be viewed using ipconfig or by pinging another host to trigger the ARP protocol. Access points can filter connections by MAC address but it is not a strong security method on its own since MAC addresses can be spoofed.
Firewall
Stateful Packet Inspection (SPI) keeps track of TCP and UDP connections through a state table containing details like source/destination IPs and ports, sequence numbers, and timestamps. It allows established connections from inside to outside but blocks new connections initiated from outside. SPI can detect replayed packets through unexpected sequence numbers or timestamps. By default, the firewall also filters anonymous internet requests, IDENT port 113 requests, and starts dropping connections initiated from outside.
Csmaca
Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA) is a wireless network protocol where clients listen to detect if the channel is clear before transmitting data. If clear, the client sends data to the access point which responds with an acknowledgment. However, the "hidden node problem" can cause collisions that are not detected, so clients use RTS/CTS messages to reserve the channel before transmitting to avoid collisions.
Basic config
The document provides steps to configure a router's LAN gateway address, DHCP settings, wireless network settings for both 2.4GHz and 5GHz bands, and wireless security. It also includes instructions for connecting a Windows 7 computer to the wireless network and testing the connection.
Service set
A service set includes all devices connected to a wireless network. An independent basic service set is an ad-hoc network where clients connect directly to each other without an access point. A basic service set uses one access point that all wireless clients associate with. An extended service set allows roaming between two or more basic service sets that share a common SSID or network name, increasing wireless coverage and network capacity.
Signals1
Radios transmit and receive signals by generating and encoding messages onto sine waves of different frequencies. A transmitter encodes the message and transmits it via an antenna in sine wave form, while the receiver receives the sine waves via its antenna and decodes the signals. The electromagnetic spectrum is divided into radio bands with allocated frequencies, such as the 2.4GHz and 5GHz bands used for WiFi. Within these bands, channels separate signals by assigning them specific frequencies.
Modulation
Modulation involves encoding binary data onto a sine wave by changing the wave's amplitude, frequency, or phase. Common modulation techniques include amplitude shift keying, frequency shift keying, and phase shift keying. More advanced techniques like orthogonal frequency-division multiplexing divide the channel into sub-channels and use modulation such as BPSK, QPSK, and QAM to send data in parallel across sub-channels. Higher order QAM encodings use amplitude and phase to represent more bits per symbol.
IEEE WLAN standards
The document discusses several IEEE 802.11 wireless LAN standards including 802.11b, 802.11g, and upcoming 802.11ac. It outlines the key aspects that each standard defines such as the radio frequency band used, available channels, modulation technique, maximum data rates, and typical indoor and outdoor ranges. MIMO and 802.11n are also summarized as utilizing multiple antennas to achieve higher throughput.
Wireless components
This document discusses wireless network adapters and access points. It explains that wireless NICs transmit and receive wireless signals and can be integrated into devices or added via USB, PCI, or PCMCIA. Wireless access points allow wireless clients to connect to a wired network by receiving wireless frames and converting them to wired frames. Access points can have removable or fixed antennas that are either omni-directional or directional. The document also notes that routers integrate wireless access point, switch, routing, and firewall functions into a single device.
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Policy
- 1. Netiquette is the social code of using network communications. ◦ A social code defines behaviour rules for people using the internet, and wired and wireless LANs ◦ The social code defines good manners so that non-violent communications can be achieved and everyone is served A security policy is a collection of policies that specify how security is implemented and managed for a business ◦ It includes configuration details such as protocols used, port forwarding rules, how data is logged, how passwords are created and maintained and the change process. ◦ It includes physical security such as locks, security cameras and access systems ◦ It includes rules about applications and business processes ◦ It includes how employees behave when accessing the wired and wireless lan and internet. This is defined in the Acceptable Use Policy
- 2. Securing the Wlan must use a Defence in Depth strategy ◦ Have multiple security measures implemented, multiple layers of security controls Reduce the Service Set Area – the signal range ◦ Reduce power levels (not all equipment can do this) to contain signals within business boundaries SSID cloaking ◦ Disable SSID broadcasts from Access Points Mac address filtering ◦ Filter host joining the Wlan by Mac address Implement the strongest security standard you can ◦ WPA2 or WPA if equipment is older with long passphrases Create a security policy that mandates configuration and acceptable use ◦ Educate users and make them accountable Monitor Wlans for threats and abnormal behaviour ◦ Implement logging, intrusion prevention systems