Testing AAA Configuration on Cisco ASA & Cisco IOS
This tutorial focuses on testing AAA (Authentication, Authorization, and Accounting) on common Cisco ASA and IOS (including IOS-XE and IOS-XR) devices to verify the AAA…
IOS
How to Configure Syslog on a Cisco IOS Switch or Router
In this tutorial, I’ll step through the process of configuring syslog on Cisco IOS based devices. For this example, I will be configuring syslog on…
Disable Weak SSH and SSL Ciphers on Cisco IOS
It amazes me how many network vendors still release software with weak ciphers enabled. Cisco is no exception to this. Any time you enable remote…
Configure SNMPv3 on a Cisco Catalyst Switch or Router
SNMP (simple network monitoring protocol) is an application-layer protocol that provides a message format for communication between managers and agents. The SNMP system consists of…
How to Enable SSH on a Cisco Catalyst Switch or Router
In this tutorial, we’ll cover the steps to enable SSH access on a Cisco switch or router running IOS, IOS-XE, or IOS-XR. Secure Shell (SSH)…
How to Stop Traceroute or Ping on a Cisco Device
Did you just start an extended ping or trace from the command line of a Cisco switch or router and are now staring at a…
Example Ansible Playbook for Updating Cisco IOS Switches
I’m going to assume that if you’re here, you already know what Ansible is. If not, head over to https://www.ansible.com/integrations/networks and check it out. In short…
How to Download Cisco IOS Updates for Free (Legally)
A few years ago Cisco walled off their update downloads, requiring that you have a current SMARTnet subscription (be under a support contract) to download…
How Update Cisco Router using USB Drive
If you have a Cisco IOS Router or Switch that you need to update via USB, you’re in the right place. Copying your firmware image…
Force a Cisco Switch to Use Non-Cisco SFP Modules
If you’re setting up a Cisco Catalyst switch, such as 1000, 2960X, 3560X, 9200, 9300, etc…, and you insert a non-Cisco branded SFP into one…
Upgrade Cisco IOS Switch Step-by-Step
Just as patching Windows is regular event so should be updating your Cisco networking equipment. New updates not only fix security holes and bugs but…
New Style TACACS+ Configuration on Cisco IOS
If you’ve configured TACACS+ on a Cisco IOS device within the last few years you’ve probably ran into this message: “This cli will be deprecated…