Now that we have a basic understanding of IP addresses, DHCP and ACLs. NAT would our next tool that will have a critical role with internet access and port forwarding…
Access-List are one of the most frequently used features that are utilized to achieve different kinds of tasks. Unlike what the name suggests, Access Lists are not only used to…
VLAN Trunking Protocol (VTP): is a Cisco proprietary protocol that propagates the definition of Virtual Local Area Networks (VLANs) to the neighboring L2 devices. To do this, VTP carries VLAN information…
Cisco Discovery Protocol (CDP): Cisco Discovery Protocol is a proprietary Data Link Layer protocol developed by Cisco Systems. It is used to share information about other directly connected Cisco equipment,…
DHCP: DHCP Servers leases IP addresses to clients and offer a seamless user experience. DHCP Depends on 4 types of packets and uses UDP port 67/68 (UDP port number 67…
Cisco devices have two main shell modes, the user EXEC mode and the Privileage EXEC mode The user EXEC mode offers a very limited set of commands like ping, telnet,…
Every IP address is divided into a network portion and a host portion. The size of the network/host portions is defined by the subnet mask. Subnet Masks can only have…