SSH Reverse Tunnel – Selfhealing

Reverse tunneling is a big security issue but sometimes you may need it though. Please be very careful! In my case I wanted to test an ELK setup with real data. My filebeats where installed behind a firewall which allowed connections from the logstash server to the filebeat server only. The other direction was blocked.... Continue Reading →

Restrict ssh sessions

It's quite simple to limit a ssh session to use specific commands only. This solution may not be bullet prove but it's suffizient in most cases. My first attempt was to use rssh but sadly this project is no longer maintained. I ran into a bug which forced me to look for a different solution. The... Continue Reading →

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