The slides will practically guide you through the steps of class B IP address subnetting. The generation of Network IP, the subnet mask, the broadcast IP are also generated.
Visual cryptography allows images to be encrypted in a way that decryption does not require a computer and instead relies on human visual perception. It works by splitting an image into shares, such that individually the shares appear random but combining the appropriate shares reveals the hidden image. A basic example is the (2, 2) scheme where each pixel is divided into 4 sub-pixels between 2 shares, with black pixels arranged differently than white pixels. Bringing the shares together reveals the hidden image through the human visual system without any computation. Visual cryptography has applications for secure transmission of images and verification of transactions.
Visual cryptography is a secret sharing scheme that allows for the encryption of written text or images in a perfectly secure way without any computation. It works by dividing the secret into multiple shares, where only when a sufficient number of shares are superimposed can the secret be revealed to the human visual system. For example, in a 2 by 2 scheme, a secret image is encoded into two shares such that individually the shares reveal no information, but when overlayed together the secret image is revealed, though with some loss of contrast and resolution. Visual cryptography has applications in security, watermarking, and remote voting.
Visual cryptography allows encrypting images such that the decryption can be performed by the human visual system without any computation. It works by splitting an image into shares, such that individual shares reveal no information about the original image but combining a sufficient number of shares reveals the hidden image. The document discusses various schemes for visual cryptography including general k out of n schemes, 2 out of 2 schemes using 2 or 4 subpixels per pixel, 3 out of 3 schemes, and 2 out of 6 schemes. It also covers extensions for color, grayscale, and continuous tone images as well as applications such as voting and banking.
The document discusses IP addressing basics including MAC addresses, IP addresses, private and public IP addresses, and subnetting. It provides examples of MAC addresses, ifconfig output showing MAC and IP addresses, private IP address ranges, and how to break up a Class C network into multiple subnets using subnet masks.
This document provides instructions for how to invest in cryptocurrency. It recommends starting small with 5-10% of income, researching the top cryptocurrencies like Bitcoin and Ethereum, selecting a reputable cryptocurrency exchange, choosing a secure digital wallet, and then following steps to open an account, add funds, and purchase cryptocurrencies. The benefits of cryptocurrency investing are also outlined, such as low costs, 24/7 liquidity, transparency, and ability to diversify assets with lower investment minimums.
Practical Routers & Switches for Electrical EngineersLiving Online
Routers and switches are primary components of most networks and obviously internetworks. Routers are simultaneously the most complex component of networks and the most important. This workshop goes through the basics of routers, routed and routing protocols and the basic rules to follow in building internetworks. If you are using any form of communication system or are applying modern PLCs/SCADA systems this workshop will give you the essential tools in working with networks. It is not an advanced workshop – but a hands-on one.
MORE INFORMATION: http://www.idc-online.com/content/practical-routers-switches-engineers-technicians-2
Blockchain technology provides a decentralized, distributed, and digital ledger for recording transactions across many computers so that the record cannot be altered retroactively. The seminar presentation covered the history of blockchain from 1991 to present, described blockchain architecture including its layers and use of cryptography, and discussed various blockchain types and applications beyond cryptocurrencies such as in music, storage, healthcare, and elections. Advantages include transparency, security, and traceability while disadvantages include complexity, slow transaction times, and increasing storage needs as the blockchain grows.
The document discusses the application layer of the OSI model and common application layer protocols. It covers how protocols like HTTP, SMTP, POP, IMAP, FTP operate to provide services to end users. DNS and DHCP are also examined, with DNS translating names to IP addresses and DHCP automating IP address assignment. The application, presentation and session layers are described as working together to support applications and exchange data between hosts.
Visual cryptography allows images to be encrypted in a way that decryption does not require a computer and instead relies on human visual perception. It works by splitting an image into shares, such that individually the shares appear random but combining the appropriate shares reveals the hidden image. A basic example is the (2, 2) scheme where each pixel is divided into 4 sub-pixels between 2 shares, with black pixels arranged differently than white pixels. Bringing the shares together reveals the hidden image through the human visual system without any computation. Visual cryptography has applications for secure transmission of images and verification of transactions.
Visual cryptography is a secret sharing scheme that allows for the encryption of written text or images in a perfectly secure way without any computation. It works by dividing the secret into multiple shares, where only when a sufficient number of shares are superimposed can the secret be revealed to the human visual system. For example, in a 2 by 2 scheme, a secret image is encoded into two shares such that individually the shares reveal no information, but when overlayed together the secret image is revealed, though with some loss of contrast and resolution. Visual cryptography has applications in security, watermarking, and remote voting.
Visual cryptography allows encrypting images such that the decryption can be performed by the human visual system without any computation. It works by splitting an image into shares, such that individual shares reveal no information about the original image but combining a sufficient number of shares reveals the hidden image. The document discusses various schemes for visual cryptography including general k out of n schemes, 2 out of 2 schemes using 2 or 4 subpixels per pixel, 3 out of 3 schemes, and 2 out of 6 schemes. It also covers extensions for color, grayscale, and continuous tone images as well as applications such as voting and banking.
The document discusses IP addressing basics including MAC addresses, IP addresses, private and public IP addresses, and subnetting. It provides examples of MAC addresses, ifconfig output showing MAC and IP addresses, private IP address ranges, and how to break up a Class C network into multiple subnets using subnet masks.
This document provides instructions for how to invest in cryptocurrency. It recommends starting small with 5-10% of income, researching the top cryptocurrencies like Bitcoin and Ethereum, selecting a reputable cryptocurrency exchange, choosing a secure digital wallet, and then following steps to open an account, add funds, and purchase cryptocurrencies. The benefits of cryptocurrency investing are also outlined, such as low costs, 24/7 liquidity, transparency, and ability to diversify assets with lower investment minimums.
Practical Routers & Switches for Electrical EngineersLiving Online
Routers and switches are primary components of most networks and obviously internetworks. Routers are simultaneously the most complex component of networks and the most important. This workshop goes through the basics of routers, routed and routing protocols and the basic rules to follow in building internetworks. If you are using any form of communication system or are applying modern PLCs/SCADA systems this workshop will give you the essential tools in working with networks. It is not an advanced workshop – but a hands-on one.
MORE INFORMATION: http://www.idc-online.com/content/practical-routers-switches-engineers-technicians-2
Blockchain technology provides a decentralized, distributed, and digital ledger for recording transactions across many computers so that the record cannot be altered retroactively. The seminar presentation covered the history of blockchain from 1991 to present, described blockchain architecture including its layers and use of cryptography, and discussed various blockchain types and applications beyond cryptocurrencies such as in music, storage, healthcare, and elections. Advantages include transparency, security, and traceability while disadvantages include complexity, slow transaction times, and increasing storage needs as the blockchain grows.
The document discusses the application layer of the OSI model and common application layer protocols. It covers how protocols like HTTP, SMTP, POP, IMAP, FTP operate to provide services to end users. DNS and DHCP are also examined, with DNS translating names to IP addresses and DHCP automating IP address assignment. The application, presentation and session layers are described as working together to support applications and exchange data between hosts.
In cryptography, a cryptosystem is called a threshold cryptosystem.
If in order to decrypt an encrypted message or to sign a message
several parties must cooperate in the decryption
Visual cryptography is a cryptographic technique that allows visual information like images and text to be encrypted in a way that decryption does not require a computer and is instead a mechanical operation performed by the human visual system. It was pioneered in 1994 by Moni Naor and Adi Shamir. The technique works by breaking an image into shares such that individual shares reveal no information about the original image but combining the shares allows the image to be revealed. For example, in a 2 out of 2 visual cryptography scheme each pixel is broken into 4 subpixels distributed randomly across 2 shares such that stacking the shares recovers the original pixel value. Visual cryptography finds applications in secure identification and communication.
The document provides an overview of IPv6 addressing and subnetting. It discusses IPv6 address representation and structure, including that addresses are 128 bits long and represented in hexadecimal. The addressing hierarchy from ISP to customer site to individual devices is covered. Different address types like link-local and global unicast are defined. IPv6 autoconfiguration and how devices generate interface IDs are summarized. The document concludes with an example of how to subnet a provider's IPv6 block and allocate /48 prefixes to multiple customers.
Vamos a realizar un enlace punto a punto inalámbrico entre dos equipos de Mikrotik, uno actuará como Master en modo AP por lo que tendrá que tener licencia de nivel 4 y el segundo como Estación, por lo que valdrá una con nivel 3.
Para realizar este enlace hemos utilizado el punto de acceso exterior Mikrotik RB/OMNITIKU-5HND y la antena Mikrotik RB/LHG-5ND
Nota: Con dos antenas con licencia 3 se puede hacer un enlace Brigde seleccionando ese modo en vez de AP Bridge.
Lo primero que tenemos que hacer es acceder al equipo que actuará como Maestro o Master con la aplicación Winbox o vía Webfig, en este caso lo haremos de la primera manera.
Nos iremos al apartado de Wireless y abriremos las propiedades de la interfaz “wlan1” de nuestro dispositivo.
Nos iremos a la pestaña de Wireless en la parte superior. Aquí es donde vamos a realizar la configuración de los siguientes campos:
Mode: AP Bridge
SSID: Será el nombre de la red Wifi del punto a punto que luego tendremos que buscar en el equipo Estación.
Los siguientes campos podemos dejarlos por defecto y después cambiarlos según lo que necesitemos: Band, Channel Width, Frequency, Country, etc
What is Steganography and its types, steps of steganography, methods of steganography, text steganography, image steganography, audio steganography, video steganography, steganography software, applications of steganography
Building Blocks of the Private Cloud - ComputeDaniel Mar
Building Blocks of the Private Cloud is specially brought to you by SCS Enterprise Cloud Computing & Virtualisation SIG. Speaker Mr Daniel Mar, Principal Consultant with Infront Consulting Group, is an experienced consultant with over 12 years in the IT industry. He has been specialising in server virtualization for the past 7 years where he started by deploying technologies from VMware. He also picked up Citrix virtualisation solutions and now focuses on Microsoft Virtualisation and Systems Management. He has helped many companies move from a purely physical infrastructure to a highly available virtual infrastructure and also help them deploy private cloud infrastructures.
The document discusses the history and development of optical fiber communication. It describes the key windows of operation in optical fiber spectrum - the first window around 800-900nm, the second window around 1310nm, and the third window from 1510-1625nm. The third window has the lowest fiber attenuation of around 0.26dB/km and is used for most modern communication systems. The document also discusses ITU-T recommendations for optical fiber characterization and provides background on the principles and advantages of optical fiber communication.
The document provides an overview of the TLS/SSL security protocol. It discusses the history and design of TLS/SSL, including how it provides encryption between a web browser and server. It also covers public key encryption, certificate authorities, and how they prevent man-in-the-middle attacks on TLS/SSL connections. Finally, it introduces the Scyther tool for analyzing security protocols and provides an example of modeling a simplified TLS key transport protocol in Scyther.
Bitcoin Lightning Network - Presentation Jim Brysland
The Lightning Network is a solution to Bitcoin's scalability problem that allows for high volumes of fast and cheap transactions to be conducted off the blockchain. It creates payment channels that enable direct and instant transfers between two parties without waiting for transaction confirmations. This helps Bitcoin fulfill its potential as a global, decentralized payment system and scales far beyond the current 7 transactions per second that can be supported on-chain.
1) Configure a router to route between multiple directly connected networks
2) Describe the primary functions and features of a router.
3) Explain how routers use information in data packets to make forwarding decisions in a small- to medium-sized business network.
4) Explain the encapsulation and de-encapsulation process used by routers when switching packets between interfaces.
5) Compare ways in which a router builds a routing table when operating in a small- to medium-sized business network.
6) Explain routing table entries for directly connected networks.
7) Explain how a router builds a routing table of directly connected networks.
8) Explain how a router builds a routing table using static routes.
9) Explain how a router builds a routing table using a dynamic routing protocol.
This document provides an overview of IP addressing and subnetting. It discusses IP address format, classful and classless addressing, subnetting, VLSM, and provides an example of using VLSM to allocate addresses to subnets of varying sizes from a single class C network. The key topics covered are IP address format, routing with classful vs classless addressing, how subnetting divides a network into smaller subnets, and how VLSM allows variable length subnet masks for flexible address allocation.
This document outlines an agenda for a 3-day basic network training course. Day 1 covers networking fundamentals, the OSI model, IP addressing, Ethernet LANs, and starting on Cisco switches. Day 2 covers transport protocols, starting on Cisco routers, routing protocols, routing examples, and wireless LANs. Day 3 covers cable technologies, WAN technologies, basic network commands, and troubleshooting. Hands-on labs are included for switches, routers, and examples of routing configurations.
The document provides examples of subnetting IP address ranges to meet specific requirements for number of subnets and hosts. It demonstrates converting host bits in an IP address to network bits to create subnets, and calculating the resulting number of subnets, hosts per subnet, and subnet ranges. Custom subnet masks are provided based on the number of bits converted from host to network.
The document presents on VLSM and supernetting. It contains introductions to VLSM and supernetting, their histories, basic concepts and processes. It provides examples of implementing VLSM by applying variable length subnet masks to divide networks into differently sized subnets. It also demonstrates how to create larger networks through supernetting by combining multiple IP addresses or networks and setting their common bits. The document aims to explain the techniques of VLSM and supernetting.
Digital signatures provide a way to validate the authenticity and integrity of digital documents, similar to physical signatures. They use cryptographic techniques including hash functions and asymmetric cryptography. A public key infrastructure (PKI) issues digital certificates that map public keys to users' identities. Digital signatures are created by hashing a document and encrypting the hash with a user's private key. Anyone can validate the signature by decrypting it with the user's public key and comparing hashes. India's PKI follows X.509 standards and uses a hierarchical trust model with the Root CA at the top. Digital Signature Certificates contain a user's identity and public key. eSign allows Aadhaar holders to digitally sign documents using their Aad
Dokumen menjelaskan tentang subnetting pada alamat IP kelas C dengan mengorbankan sebagian bit host ID untuk membuat network ID tambahan, termasuk cara menghitung jumlah subnet, netmask, dan range alamat setiap subnet.
CCNA 1 Routing and Switching v5.0 Chapter 10Nil Menon
The document discusses the application layer of the OSI model and common application layer protocols. It describes how protocols like HTTP, SMTP, POP, FTP, and SMB allow end-user applications to transfer files, emails and web pages across the network. DNS and DHCP are also covered as they provide important network services like translating domain names to IP addresses and assigning IP configuration to devices.
This document provides an overview of network addressing concepts including:
1. It describes IP addresses and subnet masks, and how they are used to identify networks and hosts.
2. It outlines the different classes of IP addresses (A, B, C, D, E) and their address ranges.
3. It explains how devices obtain IP addresses through static assignment or dynamic assignment via DHCP.
4. It discusses network address translation (NAT) and how it allows private IP addresses to access the public internet through an ISR router.
This document discusses subnetting and network configuration. It contains 10 questions about determining the number of subnets, hosts, subnet masks, and IP addresses given network IDs and subnet masks. For example, it asks how many usable subnets there are with a network ID of 201.114.168 and a subnet mask of 255.255.255.240, and what the beginning IP address of the last subnet is with a network ID of 198.162.10 configured for at least 6 subnets with 25 hosts each. The document provides the answers and explanations for each question.
The document discusses Internet Protocol version 4 (IPv4) including its 32-bit binary and decimal dotted address formats, the division of addresses into network and host portions, types of addresses including network, broadcast and host addresses, and address ranges including private, reserved, multicast and link local addresses. It also covers subnet masking and subnetting to divide IP networks into smaller subnetworks to better utilize limited available address space.
In cryptography, a cryptosystem is called a threshold cryptosystem.
If in order to decrypt an encrypted message or to sign a message
several parties must cooperate in the decryption
Visual cryptography is a cryptographic technique that allows visual information like images and text to be encrypted in a way that decryption does not require a computer and is instead a mechanical operation performed by the human visual system. It was pioneered in 1994 by Moni Naor and Adi Shamir. The technique works by breaking an image into shares such that individual shares reveal no information about the original image but combining the shares allows the image to be revealed. For example, in a 2 out of 2 visual cryptography scheme each pixel is broken into 4 subpixels distributed randomly across 2 shares such that stacking the shares recovers the original pixel value. Visual cryptography finds applications in secure identification and communication.
The document provides an overview of IPv6 addressing and subnetting. It discusses IPv6 address representation and structure, including that addresses are 128 bits long and represented in hexadecimal. The addressing hierarchy from ISP to customer site to individual devices is covered. Different address types like link-local and global unicast are defined. IPv6 autoconfiguration and how devices generate interface IDs are summarized. The document concludes with an example of how to subnet a provider's IPv6 block and allocate /48 prefixes to multiple customers.
Vamos a realizar un enlace punto a punto inalámbrico entre dos equipos de Mikrotik, uno actuará como Master en modo AP por lo que tendrá que tener licencia de nivel 4 y el segundo como Estación, por lo que valdrá una con nivel 3.
Para realizar este enlace hemos utilizado el punto de acceso exterior Mikrotik RB/OMNITIKU-5HND y la antena Mikrotik RB/LHG-5ND
Nota: Con dos antenas con licencia 3 se puede hacer un enlace Brigde seleccionando ese modo en vez de AP Bridge.
Lo primero que tenemos que hacer es acceder al equipo que actuará como Maestro o Master con la aplicación Winbox o vía Webfig, en este caso lo haremos de la primera manera.
Nos iremos al apartado de Wireless y abriremos las propiedades de la interfaz “wlan1” de nuestro dispositivo.
Nos iremos a la pestaña de Wireless en la parte superior. Aquí es donde vamos a realizar la configuración de los siguientes campos:
Mode: AP Bridge
SSID: Será el nombre de la red Wifi del punto a punto que luego tendremos que buscar en el equipo Estación.
Los siguientes campos podemos dejarlos por defecto y después cambiarlos según lo que necesitemos: Band, Channel Width, Frequency, Country, etc
What is Steganography and its types, steps of steganography, methods of steganography, text steganography, image steganography, audio steganography, video steganography, steganography software, applications of steganography
Building Blocks of the Private Cloud - ComputeDaniel Mar
Building Blocks of the Private Cloud is specially brought to you by SCS Enterprise Cloud Computing & Virtualisation SIG. Speaker Mr Daniel Mar, Principal Consultant with Infront Consulting Group, is an experienced consultant with over 12 years in the IT industry. He has been specialising in server virtualization for the past 7 years where he started by deploying technologies from VMware. He also picked up Citrix virtualisation solutions and now focuses on Microsoft Virtualisation and Systems Management. He has helped many companies move from a purely physical infrastructure to a highly available virtual infrastructure and also help them deploy private cloud infrastructures.
The document discusses the history and development of optical fiber communication. It describes the key windows of operation in optical fiber spectrum - the first window around 800-900nm, the second window around 1310nm, and the third window from 1510-1625nm. The third window has the lowest fiber attenuation of around 0.26dB/km and is used for most modern communication systems. The document also discusses ITU-T recommendations for optical fiber characterization and provides background on the principles and advantages of optical fiber communication.
The document provides an overview of the TLS/SSL security protocol. It discusses the history and design of TLS/SSL, including how it provides encryption between a web browser and server. It also covers public key encryption, certificate authorities, and how they prevent man-in-the-middle attacks on TLS/SSL connections. Finally, it introduces the Scyther tool for analyzing security protocols and provides an example of modeling a simplified TLS key transport protocol in Scyther.
Bitcoin Lightning Network - Presentation Jim Brysland
The Lightning Network is a solution to Bitcoin's scalability problem that allows for high volumes of fast and cheap transactions to be conducted off the blockchain. It creates payment channels that enable direct and instant transfers between two parties without waiting for transaction confirmations. This helps Bitcoin fulfill its potential as a global, decentralized payment system and scales far beyond the current 7 transactions per second that can be supported on-chain.
1) Configure a router to route between multiple directly connected networks
2) Describe the primary functions and features of a router.
3) Explain how routers use information in data packets to make forwarding decisions in a small- to medium-sized business network.
4) Explain the encapsulation and de-encapsulation process used by routers when switching packets between interfaces.
5) Compare ways in which a router builds a routing table when operating in a small- to medium-sized business network.
6) Explain routing table entries for directly connected networks.
7) Explain how a router builds a routing table of directly connected networks.
8) Explain how a router builds a routing table using static routes.
9) Explain how a router builds a routing table using a dynamic routing protocol.
This document provides an overview of IP addressing and subnetting. It discusses IP address format, classful and classless addressing, subnetting, VLSM, and provides an example of using VLSM to allocate addresses to subnets of varying sizes from a single class C network. The key topics covered are IP address format, routing with classful vs classless addressing, how subnetting divides a network into smaller subnets, and how VLSM allows variable length subnet masks for flexible address allocation.
This document outlines an agenda for a 3-day basic network training course. Day 1 covers networking fundamentals, the OSI model, IP addressing, Ethernet LANs, and starting on Cisco switches. Day 2 covers transport protocols, starting on Cisco routers, routing protocols, routing examples, and wireless LANs. Day 3 covers cable technologies, WAN technologies, basic network commands, and troubleshooting. Hands-on labs are included for switches, routers, and examples of routing configurations.
The document provides examples of subnetting IP address ranges to meet specific requirements for number of subnets and hosts. It demonstrates converting host bits in an IP address to network bits to create subnets, and calculating the resulting number of subnets, hosts per subnet, and subnet ranges. Custom subnet masks are provided based on the number of bits converted from host to network.
The document presents on VLSM and supernetting. It contains introductions to VLSM and supernetting, their histories, basic concepts and processes. It provides examples of implementing VLSM by applying variable length subnet masks to divide networks into differently sized subnets. It also demonstrates how to create larger networks through supernetting by combining multiple IP addresses or networks and setting their common bits. The document aims to explain the techniques of VLSM and supernetting.
Digital signatures provide a way to validate the authenticity and integrity of digital documents, similar to physical signatures. They use cryptographic techniques including hash functions and asymmetric cryptography. A public key infrastructure (PKI) issues digital certificates that map public keys to users' identities. Digital signatures are created by hashing a document and encrypting the hash with a user's private key. Anyone can validate the signature by decrypting it with the user's public key and comparing hashes. India's PKI follows X.509 standards and uses a hierarchical trust model with the Root CA at the top. Digital Signature Certificates contain a user's identity and public key. eSign allows Aadhaar holders to digitally sign documents using their Aad
Dokumen menjelaskan tentang subnetting pada alamat IP kelas C dengan mengorbankan sebagian bit host ID untuk membuat network ID tambahan, termasuk cara menghitung jumlah subnet, netmask, dan range alamat setiap subnet.
CCNA 1 Routing and Switching v5.0 Chapter 10Nil Menon
The document discusses the application layer of the OSI model and common application layer protocols. It describes how protocols like HTTP, SMTP, POP, FTP, and SMB allow end-user applications to transfer files, emails and web pages across the network. DNS and DHCP are also covered as they provide important network services like translating domain names to IP addresses and assigning IP configuration to devices.
This document provides an overview of network addressing concepts including:
1. It describes IP addresses and subnet masks, and how they are used to identify networks and hosts.
2. It outlines the different classes of IP addresses (A, B, C, D, E) and their address ranges.
3. It explains how devices obtain IP addresses through static assignment or dynamic assignment via DHCP.
4. It discusses network address translation (NAT) and how it allows private IP addresses to access the public internet through an ISR router.
This document discusses subnetting and network configuration. It contains 10 questions about determining the number of subnets, hosts, subnet masks, and IP addresses given network IDs and subnet masks. For example, it asks how many usable subnets there are with a network ID of 201.114.168 and a subnet mask of 255.255.255.240, and what the beginning IP address of the last subnet is with a network ID of 198.162.10 configured for at least 6 subnets with 25 hosts each. The document provides the answers and explanations for each question.
The document discusses Internet Protocol version 4 (IPv4) including its 32-bit binary and decimal dotted address formats, the division of addresses into network and host portions, types of addresses including network, broadcast and host addresses, and address ranges including private, reserved, multicast and link local addresses. It also covers subnet masking and subnetting to divide IP networks into smaller subnetworks to better utilize limited available address space.
The document discusses subnetting and network addressing. It begins by providing an example of finding the major network information, subnet information, and host range given an IP address, network mask, and subnet mask. It then shows how to determine the subnet address, number of subnets, hosts per subnet, and allocation of IP addresses across multiple customer groups. Key steps include converting addresses to binary, performing bitwise AND operations, and determining the subnet and host bits.
This presentation contains why we need sub netting, how we do sub netting, CIDR, Subnet mask, Subnet mask value, Class A Sub netting, Class B Sub netting, Class C Sub netting.
This document contains 10 examples of subnetting calculations. For each example, the network ID, subnet mask, number of subnets, number of hosts per subnet, or ending IP address of a subnet is provided or calculated. Key details include:
- Example 1 calculates 4 usable subnets from a 255.255.255.240 mask on 201.114.168
- Example 2 finds 30 usable subnets with 6 hosts each from a 255.255.255.248 mask on 222.72.157
- Example 3 determines the ending IP of the last subnet is 198.162.10.193 with 25 hosts on each of 6 subnets for 198.162.10
This document discusses subnetting and CIDR notation. Subnetting allows a single address block to be divided into multiple networks or subnets. It maximizes address efficiency, extends the life of IPv4 addresses, and makes networks easier to manage. CIDR notation uses a slash to indicate the number of network address bits. The document provides examples of how to calculate the number of subnets, valid host addresses, and network vs broadcast addresses using CIDR and a subnet mask. It also defines what a subnet mask is - a 32-bit address that distinguishes the network from host portions of an IP address.
This document discusses subnetting and provides an example of subnetting the network address 172.19.0.0/16 into subnets with mask 255.255.255.0 (/24). It shows how the network is divided into multiple subnets, each with 254 usable host addresses. It also explains some key points about subnetting such as reserving the network and broadcast addresses in each subnet and how subnetting does not increase the number of available hosts but allows dividing a network into smaller networks.
This document provides an overview of IP addresses, including:
- The types and classes of IP addresses (IPv4 and IPv6) and how they are used to uniquely identify devices.
- How IP addresses are divided into network and host portions based on their class (A, B, C, etc).
- The concepts of subnetting IP addresses to divide large networks into smaller broadcast domains for efficiency.
The document discusses different types of IP addresses including network addresses, host addresses, and broadcast addresses. It provides examples of network and broadcast addresses for different IP address classes and explains how subnet masks are used to identify the number of network and host bits in an IP address.
The document discusses different types of IP addresses including network addresses, host addresses, and broadcast addresses. It provides examples of network and broadcast addresses for different IP address classes and explains how subnet masks are used to identify the number of network and host bits in an IP address.
IP addresses can be network addresses, host addresses, or broadcast addresses. Network addresses have all host bits set to 0, broadcast addresses have all host bits set to 1, and other addresses are host addresses. Subnet masks are used to identify the number of network and host bits in an IP address and are represented in dotted decimal format like 255.255.255.0.
IP addresses can be network addresses, host addresses, or broadcast addresses. Network addresses have all host bits set to 0, broadcast addresses have all host bits set to 1, and other addresses are host addresses. Subnet masks are used to identify the number of network and host bits in an IP address and are represented in dotted decimal format like 255.255.255.0.
This document discusses subnetting and provides examples. It describes subnetting as breaking up a large network into smaller subnets. Subnetting allows creating multiple networks from a single address block and maximizes addressing efficiency. The document then provides examples of subnetting a network using CIDR notation and calculating the number of subnets, hosts per subnet, valid IP ranges, and broadcast addresses. It also discusses an example of optimally subnetting the IP addresses needed across different departments within a university based on their host requirements.
The document discusses IP addressing and routing in LTE networks. It covers:
- OSI layers used in LTE including physical, MAC, RLC, and PDCP layers
- IP addressing schemes including IPv4 addressing, subnetting, and network/broadcast addresses
- IP routing configuration in BSCs, RNCs, and between network nodes
- Interface IP allocation and configuration of BTS, NodeB, and OAM addresses
There are two main types of addresses used in networking: IP addresses and MAC addresses. IP addresses are assigned to devices using TCP/IP and allow devices to communicate on an IP network or the Internet. They consist of a network portion and host portion. MAC addresses are unique identifiers assigned to network interfaces.
Subnetting allows you to break one large network into smaller networks. It provides advantages like reduced network traffic, optimized performance, simplified management, and facilitating geographic spanning. To create subnets, bits are taken from the host portion of the IP address and reserved to define the subnet. Examples show how to determine the number of subnets, hosts per subnet, valid subnet addresses, and broadcast addresses for different subnet mask lengths.
HijackLoader Evolution: Interactive Process HollowingDonato Onofri
CrowdStrike researchers have identified a HijackLoader (aka IDAT Loader) sample that employs sophisticated evasion techniques to enhance the complexity of the threat. HijackLoader, an increasingly popular tool among adversaries for deploying additional payloads and tooling, continues to evolve as its developers experiment and enhance its capabilities.
In their analysis of a recent HijackLoader sample, CrowdStrike researchers discovered new techniques designed to increase the defense evasion capabilities of the loader. The malware developer used a standard process hollowing technique coupled with an additional trigger that was activated by the parent process writing to a pipe. This new approach, called "Interactive Process Hollowing", has the potential to make defense evasion stealthier.
Honeypots Unveiled: Proactive Defense Tactics for Cyber Security, Phoenix Sum...APNIC
Adli Wahid, Senior Internet Security Specialist at APNIC, delivered a presentation titled 'Honeypots Unveiled: Proactive Defense Tactics for Cyber Security' at the Phoenix Summit held in Dhaka, Bangladesh from 23 to 24 May 2024.
Securing BGP: Operational Strategies and Best Practices for Network Defenders...APNIC
Md. Zobair Khan,
Network Analyst and Technical Trainer at APNIC, presented 'Securing BGP: Operational Strategies and Best Practices for Network Defenders' at the Phoenix Summit held in Dhaka, Bangladesh from 23 to 24 May 2024.
3. 1st Network:
1st Network ID = 172.168.0.0
1st Valid IP address = 172.168.0.1
Last Valid IP address = 172.168.31.254
Broadcast IP address = 172.168.31.255
2nd Network:
2nd Network ID = 172.168.32.0
1st Valid IP address = 172.168.32.1
Last Valid IP address = 172.168.63.254
Broadcast IP address = 172.168.63.255
4. 3rd Network:
3rd Network ID = 172.168.64.0
1st Valid IP address = 172.168.64.1
Last Valid IP address = 172.168.95.254
Broadcast IP address = 172.168.95.255
4th Network:
4th Network ID = 172.168.96.0
1st Valid IP address = 172.168.96.1
Last Valid IP address = 172.168.127.254
Broadcast IP address = 172.168.127.255
5. 5th Network:
5th Network ID = 172.168.128.0
1st Valid IP address = 172.168.128.1
Last Valid IP address = 172.168.159.254
Broadcast IP address = 172.168.159.255
6th Network:
6th Network ID = 172.168.160.0
1st Valid IP address = 172.168.160.1
Last Valid IP address = 172.168.191.254
Broadcast IP address = 172.168.191.255
6. 7th Network:
7th Network ID = 172.168.192.0
1st Valid IP address = 172.168.192.1
Last Valid IP address = 172.168.223.254
Broadcast IP address = 172.168.223.255
8th Network:
8th Network ID = 172.168.224.0
1st Valid IP address = 172.168.224.1
Last Valid IP address = 172.168.255.254
Broadcast IP address = 172.168.255.255