Tag: Routing

Sunday 27 February 2011

Configuring RIP on a Cisco Router

The Routing Information Protocol (RIP) is the most basic distance-vector routing protocol in use these days. It has been designed for small and local networks and because it’s configuration is very simple, it’s still commonly used. By default, RIP sends out it’s entire routing table every 30 seconds. While in small networks with few routes in the routing table this is not an issue and RIP can route efficiently; in larger networks with many routers and routes this routing update would cause unnecessary network traffic. You can read more about RIP in the document RFC 2453.

Cisco Comments: 0

Sunday 13 February 2011

Creating Users on a Cisco Router

Having user accounts on a router makes life and logging much easier. We can assign different privilige levels to different users to restrict access to certain commands. You may want a junior admin to see a few things to help you troubleshoot but you don’t want him to be able to change anything. In the following example we are going to add 2 local user accounts, one with the default privilege level (0) and one with full privilege level (15).

Cisco/Management Comments: 4

Sunday 06 February 2011

Configuring PPP Authentication # Method2

In this example we will configure PPP authentication with an alternate method. We are going to instruct the router to send different credentials (other than it’s own hostname) to the other side. In contrast to the previous method, this works even if you change the routers name.

Cisco/Security Comments: 0

Sunday 30 January 2011

Configuring PPP Authentication # Method1

By configuring authentication on our serial interfaces, we can restrict access to our router. This is not just useful, but it is highly recommended to implement authentication and a high level of security on all devices whenever possible, especially the ones facing the Internet.

Cisco/Security Comments: 4