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…
CLI
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)…
F5 BIG-IP CLI Commands Cheat Sheet
Many F5 engineers almost solely use the GUI (graphical user interface via browser, in F5 terms: Configuration Utility) because F5 has a really good and…
VMware ESXi Command Line Cheat Sheet
Below we list over 120+ common and useful CLI commands (including esxcli) for VMware ESXi Host and VM management. Keep in mind, these shell commands…
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…
How to Replace Failed ASA in Active/Standby HA Setup
Looking for the quick and clean way of replacing a failed Cisco ASA in an active/standby HA pair without breaking production traffic? You’re in the…
Enable ICMP Inspection on Cisco ASA – Make Allowing Ping Easier
So you have your shiny new (or new to you) Cisco ASA setup just the way you like it. You’ve allowed only what is needed…
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…
Cisco Configuration Archive & Rollback: The Undo Button
Ever wished you could undo a change to a Cisco IOS device right after committing it and subsequently losing access to it?
I’m pretty sure we’ve all been there.