What is DDNS
DDNS or Dydns is known as Dynamic DNS. It is basically a service which is offered for mapping domain names with a dynamically changing IP address. In the below topology,…
How to find IP address of access point
In this tutorial we understand how to find the IP address of access point which is setup on a network. The details of the scenario is explained below. Requirement A…
How to detect rogue DHCP servers on a Network
In this tutorial, the mechanism to detect a rogue dhcp server with nmap is understood. Rogue dhcp servers are setup on the network by attackers to create disruption of services.…
Network Design with 100 users
Requirement A network consists of two sites. Each site has 100 users. The routers on one of sites, is connected to the internet through which the LAN users get access…
How does a switch populate cam table
The cam table of a switch contains the mac-address to the port number mapping. It is built dynamically. In the above diagram, PC1 and PC2 are connected to E0 and…