Category Archives: Networks

Basic Cisco ASA firewall setup

There are many different firewall options out there, but one of the most prevalent seems to be the Cisco ASA. This post is a basic configuration outline of the general setup of an ASA firewall that has basic connectivity, as well as dynamic and static NAT functions. While there are many different services an ASA can provide, this post centers on an ASA configuration running on the 8.x code version doing only basic functions. This particular setup is on a firewall in routed mode, that is used for NAT/PAT with only an inside and outside interface setup.

The first config settings to enter on an ASA, or most any other Cisco networking devices is the hostname of the device, domain name, and the enable password for logging into privileged exec mode.

config t
hostname LabASA1
enable password Secret1 Continue reading Basic Cisco ASA firewall setup 

Cisco archive command

The Cisco archive command has been around for several years now and is still valid for smaller operations that are unable to afford or require a commercial software package to do the same thing.  Two of the main benefits include backing-up your configurations after changes and logging the commands that were executed by each user. The commands necessary to accomplish these tasks are fairly straightforward,

sw1# config t
sw1(config)# archive
sw1(config-archive)# path
sw1(config-archive)# write-memory
sw1(config-archive)# log config
sw1(config-archive-log-config)# logging enable Continue reading Cisco archive command