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…
Cisco
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…
Configuring uRPF on Cisco Routers & Firewalls
uRPF is a security feature present in Cisco ISR routers running IOS-XR, ASA firewalls, and Secure Firewall Threat Defense (FTD) firewalls. It verifies the source…
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…
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…
Convert ASA 5516-X back to ASA from FTD
If you received a ASA 5500-X series firewall that is running FTD instead of ASA and you want to roll it back to ASA, (or…
Getting Flexible Netflow v9 on a Cisco 9300 to Export to SolarWinds NTA
I have recently begun a project to replace an aging fleet of Cisco 2911 routers across our WAN with new Cisco Catalyst 9300 switches. One…
Make Your ASA Show Up in a Traceroute – Enable TTL Decrement
If you’ve been blessed, or cursed, with working in an environment with several network segments separated by routers and Cisco ASA firewalls you know that…