no42

...it's better to have good questions

OpenNMS Horizon, Docker, Traefik and Let's Encrypt

2021-08-11 3 min read Technology Ronny Trommer
I work from home for over 6 years now and especially when you like networking, want to get stuff up and running and breaking it - you start looking around :) You’ve heard about k8s, k{0,3}s or Microk8s but you don’t want to use it to run your private blog and you find yourself in a spot where the benefits running stuff in containers justify the pain - this article might be something for you :) Continue reading

Setting up a VMware Test environment

2021-08-04 4 min read Technology Ronny Trommer
To test functions like importing OVA files in VMware ESXi and with vCenter the trial phase and a local deployment can be used. You need the following requirements: VMware Workstation on Windows or VMware Fusion on Mac OSX VMware Hypervisor ISO image to install the ESXi host system VMware vCenter ISO image for local deployment If you just want to learn how it works you can get a 60 days trial license registering an account on VMware. Continue reading

Hardening SSH for audit

2021-02-19 2 min read Technology Ronny Trommer
Running a server in the public requires some additional work. Especially if you want management access via SSH for Ansible or if you want break stuff manually with fiddeling around :) You can run an SSH audit of your public server using https://www.sshaudit.com. This section here is a very condensed way to get an A rating. Just use strong host key for authentication of the host # file: /etc/ssh/sshd_config HostKey /etc/ssh/ssh_host_ed25519_key HostKey /etc/ssh/ssh_host_rsa_key Delete existing keys and re-generate the RSA and ED25519 keys Continue reading