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DHCP (Dynamic Host Control Protocol) In networks with a large number of hosts, statically assigning IP addresses and other IP information quickly becomes impractical. Dynamic Host Control Protocol (DHCP) provides administrators with a mechanism to dynamically allocate IP addresses, gateway and DNS rather than manually setting the address on each device. DHCP servers lease out IP … Read more
[threecol_two class=”alpha”][/threecol_two] [threecol_one class=”omega”] There are two basic methods of building a routing table: Static Routing Dynamic Routing [/threecol_one] A static routing table is created, maintained, and updated by a network administrator, manually. A static route to every network must be configured on every router for full connectivity. This provides a granular level of control … Read more
[threecol_two class=”alpha”][/threecol_two] [threecol_one class=”omega”]Hackers appear to have compromised and published private messages from at least 81,000 Facebook users’ accounts. The perpetrators told the Russian Service that they had details from a total of 120 million accounts, which they were attempting to sell, although there are reasons to be sceptical about that figure. [/threecol_one] Facebook said … Read more
GNS3 is one of the renown and best network software simulator released in 2008. In GNS3 you can import Cisco IOS Router images and practice as much as you want. We will explain you step by step process of How to add Cisco IOS (Dyanamips Images) to GNS3. Content- 1. Download Cisco IOS (Dyanamips Images) … Read more
TraceTcp is mostly used by end users to test the TCP port connectivity. They do Tracetcp from windows command line, Tracetcp uses TCP SYN packets rather than ICMP/UDP packets that the usual implementations use, thus bypassing gateways that block traditional traceroute packets tracetcp. To run Tracetcp in windows, two components are required- Wincap and Tracetcp.exe. … Read more
This guide will walk you through the process of adding Cisco Dynamips Images (Cisco IOS) to the EVE-NG CLI. Dynamips is an emulator for Cisco routers and switches, which allows you to test and experiment with IOS features in a lab environment. EVE-NG is a popular network emulator that can run various network devices, including … Read more
TCP requires a connection to be established between two end systems before data transfer can begin. TCP establishes the connection using a process that is called the TCP three-way handshake. This process involves setting the SYN bit and ACK bit in the segments between the two devices. An important function that is performed during connection establishment is … Read more
From the beginning, we learn about OSI model, which help us to understand the flow of packet from application layer to physical media and then we jump to TCP/IP model, but do we really know which networking model came first: TCP/IP or OSI? The TCP/IP model, which is realistically the Internet Model, came into existence … Read more
7 Layers of OSI model is a base of networking. Let’s understand what is OSI model first OSI Model is a conceptual model for understanding and designing a network architecture that is flexible, robust, and inter-operable. An open system is a set of protocols that allows any two different systems to communicate regardless of their underlying architecture. … Read more
Cisco ACS is one of the best security product provided by Cisco. Cisco ACS is used to manage multiple Network and server devices. Cisco secure ACS is an authentication , authorization, and Accounting(AAA) access control server. Cisco ACS uses RADIUS and TACACS protocol to manage devices. Minimum requirement to install Cisco ACS on VMware- 2 … Read more