Asymmetric NAT rules matched for forward and reverse flows

I was configuring a basic VPN configuration on my home Cisco ASA firewall so I could monitor a few things locally on my network while I was out with my iPhone. Being a Friday...
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...
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,...

Firepower 4100/9300 – Reset to Factory Default

I recently began working on a project with a Firepower 4100 chassis. When I powered on the appliance I quickly realized that the setup would be different than a normal Firepower device. The console...

Firepower FTD – No Gateway for Management Interface

I was recently working on a Firepower 5506-X that I pulled off the shelf that had had the configuration wizard ran on it already. The management interface had a configuration but had no gateway...

Cisco ASA 9.4 – Policy Based Routing

It has finally happened: policy based routing is available for the Cisco ASA platform. This comes about from the new version 9.4 of the ASA software. While a lot of the time policy based...

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...

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