Remote-Firepower-Firewall-Example-Topology

Add Remote Firepower Firewall to Firepower Management Center

This guide is something that I have seen requests for in multiple places including the Cisco supportforums. I recently had to complete this process for some new Cisco Firepower FTD firewalls so I am...

Basic DHCP Snooping Lab

One very easy thing that I wanted to review was DHCP snooping. There isn't much to it, but it's a good thing to review. Take a look at the lab topology. SW3 is the...

ERROR: TRACER: NP failed tracing packet

I recently implemented a couple of Cisco Firepower firewalls and have been using the packet-tracer feature to determine which NAT rules were being used for certain traffic for instance. Then, after troubleshooting an issue...

FMC – An internal error is preventing the system from validating this policy.

Have you ever been working on an access policy in Cisco Firepower Management Center and then seen the following error pop up when you opened or saved a policy: An internal error is preventing the...
pmtu-d packet

PMTU-D Packet Greater Than Effective MTU

Nothing special about this post, but I ran into an issue today and wanted to pass along the fix. I've noticed some of my posts that revolve around bug fixes are the most popular,...

Cisco IPS / IME Certificate Error

At some point if you are a user of Cisco's IPS product, you may have found it beneficial to use IME (IPS Manager Express). If you are not familiar with it, basically it is...

Cisco Router IPSec VPN Tunnel Lab (with Video)

This post will cover the creation of an IPSec tunnel between two Cisco routers. If you've ever done one of these on an ASA firewall for instance, you will notice right off the bat...