Sunday, 4 December 2016

New GCHQ CyberChef Open Source tool has some useful networking elements.

Just played with the new CyberChef tool GCHQ has put up on GitHub, Just had a quick play with the "Parse IPv6 address" & "Change IP Format" functions also useful for embedding IPv4 into IPv6 and checking IPv6 addressing among other things!

It runs in Chrome or Firefox, give it a go! CyberChef - The Cyber Swiss Army Knife

Troubleshooting BGP Neighbor Establishment

This is the most through explanation and has a really logical flowchart for troubleshooting, BGP neighbour issues that I have found, hope its helpful to you also.

Why Do BGP Neighbors Toggle Between Idle, Connect, and Active States?

Troubleshooting BGP Flow Charts

Thursday, 20 October 2016

Simulating Emulating WAN Latency in Linux - Linux Advanced Routing & Traffic Control

Needing to simulate delay to test an application ability to fill a pipe in the prototype lab, I needed to emulate the latency to get a more realistic view.  The blog post from Benjamin Cane (tc: Adding simulated network latency to your Linux server) got me onto this method.  I also found tc man page & ArchLinux Advanced Traffic Control Wiki useful for a deeper dive.
Also see my previous post on Toxiproxy - WAN simulator of sorts!

Tuesday, 18 October 2016

Foundation of setting up a CloudOps team

I found this useful and reassuring that we are going down the right route in the new challenge I have taken on.

4 Foundational Investments for Your Cloud Journey