Panorama Push Failure

A Panorama commit push recently failed for a production HA firewall pair.

Loading Environment Variables in a Cron Job

You may sometimes need to run a script using cron which has dependencies on environment variables. Because cron runs non-interactively it will require a way to load those environment variables in at run time.

Advertising a non-existent route to BGP in PAN-OS

Normally if you want to advertise a non existent route in the Cisco world, you'd need to create a null route to make that happen. I stumbled across the following post though when I was trying to suss out how to do the same in PAN-OS. In my case I wanted to advertise a GlobalProtect IP pool prefix across an AWS VPN using BGP.

Network Design - VDSL

I've been through many network designs over the years and pretty much every UK ISP. A great design I settled on for business grade VDSL connections was by utilising a separate router on the front end with firewall behind. How so with PPPoE without an ugly double NAT situation, I hear you ask? Well read on, as this is exactly what this post is about.

NetBox Automation

I've not posted about NetBox before, which I really should have done as I've been using it for years. It is a fantastic piece of open-source software that has been steadily improving over time.

Testing DNS Glue Records

Updating Netfilter Firewall Rules

Palo Alto Useful Links and Commands

I'm forever needing docs for Palo Alto considering that is now my weapon of choice in the fight against bad actors. The problem is that it can sometimes take me an age to find some of those useful docs that I use frequently if I lose them so I'm putting them here.

Useful Python Snippets

Find & Replace Multiple Files