Tag "networking"

Debugging Network Issues in K8s

Troubleshooting networking issues in docker and kubernetes is often difficult and the root cause can be in different places including the underlying networking infrastructure. I have collected some information which might be helpful.

Posted November 21, 2021 by Adrian Wyssmann ‐ 2 min read

Docker images for debugging network issues in K8s

Troubleshooting networking issues in docker and kubernetes is often difficult and the root cause can be in different places including the underlying networking infrastructure. I have collected some information which might be helpful.

Posted November 21, 2021 by Adrian Wyssmann ‐ 2 min read

Useful kubectl and helm commands

Some commands you also might find useful when working with kubectl

Posted November 21, 2021 by Adrian Wyssmann ‐ 1 min read

Network simulation with GNS3 and CML

As I am currently working on refreshing my networking skills and as I want to get deeper into network security, I was looking for some courses. As part of this research, I stumbled over GNS3 and CLM, both tools to create virtual lab environments.

Posted September 26, 2021 by Adrian Wyssmann ‐ 6 min read

Packet filtering in Linux - iptables, nftables and firewalld

Packet filtering is essential for network security and Linux offers this out of the box. There are different possibilities like iptables, nftables or firewalld, and a basic understanding of these is very useful.

Posted July 9, 2021 by Adrian Wyssmann ‐ 8 min read

Crowdsec, a collaborative behavior detection engine

Last Wednesday I was attending the DevOps Connect: DevSecOps at RSAC 2021, whereas a cool project was presented: Crowdsec, a collaborative behavior detection engine, coupled with a global IP reputation network

Posted May 22, 2021 by Adrian Wyssmann ‐ 11 min read

What is Cloudflare and why I love it

Ever since I discovered Cloudflare I am a big fan of it. They offer a lot of great products, especially also for me as an individual with a very tiny - or non-existent - IT budget.

Posted April 19, 2021 by Adrian Wyssmann ‐ 5 min read