Cisco VWIC cards need configuration before their serial ports will appear in the interface list. Once the VWIC is configured, HDLC, frame relay, or ATM with an AIM processor can be configured.

Frame relay is an attractive choice for wide-area network (WAN) connections. It offers simple configuration and allows one telco circuit to connect many locations. The following tutorial decribes configuring a frame relay.

How to pass PPTP traffic through a PIX Firewall This recipe is outdated.

The following recipe contains one method to protect against the addition of unauthorized switches to a Cisco Catalyst. This refers to the 6500 series, but it may be available on other platforms as well.

The following tech-recipe describes how to permit selected traffic to an internal host.

The following contains configuration notes for newer catalyst switches and switch modules.

Adding static host name to IP address mappings in a router (like a UNIX /etc/hosts file) can make life easier. These can override DNS entries for the host when needed, and can make easy references to other systems or devices that are not appropriate for DNS entries.

This tech-recipe explains configuring encrypted remote sessions to PIX Firewalls with SSH.

Using a Cisco router as a DHCP server can simplify a network configuration by cetralizing DHCP services in a large network or decentralizing DHCP services to the endpoint routers at satellite locations. The ease of remote management of Cisco-based DHCP services is a great advantage.

EIGRP enghanced version of the IGRP that supports variable-length subnet masks and several additional features.

RIP routing is a distance-vector routing protocol which is simple to configure. The routing protocol determines the best path to a target by estimating the distance in number of hops or intermediate routers.