Port Security

Port Security on a Cisco Switch

Posted Leave a commentPosted in BCMSN, CCENT (ICND1), CCNA (ICND2), IINS, Security, SND, Switching

In order to control what machines are plugged into your network, Cisco introduced the “switchport port-security” command. In this tutorial I’m going to explain how to use this command, and different options available using it. Below is the breakdown of the commands I used in the live demo, and an explanation of each. AOIP.ORG_Switch# terminal […]

Default Gateway

Configuring an IP address and Default-Gateway on a Cisco Switch

Posted 3 CommentsPosted in CCENT (ICND1), CCNA (ICND2), CCNA-Configs, Switching

The configuration of an IP address and default-gateway on a switch is slightly different from a router. Firstly a router doesn’t have a default-gateway but rather a default route. A switch on the other hand can have a default-gateway, especially if the device is in layer 2 mode. If the switch is a multi-layer switch […]

Configuring SPAN on a Cisco Switch

Posted 1 CommentPosted in BCMSN, Switching

SPAN (Switched Port Analyser) is a requirement whenever you have a system that wishes to log and monitor traffic that is passing through a switch. Since a switch only sends traffic to the machine requiring the packets, adding a sniffer to the switch would result in you only seeing traffic to your sniffer, from your […]