I once inherited one such system, it was running on 2.5.1.. My job was to move it to a zone on s10.. It actually pretty much worked, I had to port it forwards t

I once inherited one such system, it was running on 2.5.1.. My job was to move it to a zone on s10.. It actually pretty much worked, I had to port it forwards to S8, but then word got around that someone had done 'something' to this ancient pile of tech debt and feature requests started coming in so I rewrote it all in perl in an afternoon.. I didn't even try to understand the code, I just used tcpdump to look at the requests/responses and treated it as a black box. I don't miss this kind of work ;)