this post was submitted on 22 Oct 2026
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Linux
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From Wikipedia, the free encyclopedia
Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
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Not exactly Linux related but I think it is in the same spirit.
I self-host a git server at home which uses non-default SSH port. In my home network I did a local port-forward from port 22, so that I didn't have to specify it every time I connect to it. I somehow messed up the port-forward rule, so it routed all outbound traffic to port 22 to my home server. I didn't notice this for a while.
After a few months I tried to connect to another SSH server (public, work-related) and it failed. I tried the same with a VPN with an exit node in another country and this time it worked. I got scared that my ISP or some adversary was trying to do a MITM attack. I remembered my local network configuration about an hour later. Gave myself a big scare that day. 😅