At a previous job we had a process on a server that was connecting to a third party system, but the third party system was speaking a version of SSL/TLS that ou

At a previous job we had a process on a server that was connecting to a third party system, but the third party system was speaking a version of SSL/TLS that our process couldn't connect to (I seem to recall there was an F5 load balancer between us somewhere?). Since we couldn't change our running system to support that SSL/TLS, we stood up another machine with mitmproxy and pointed our process to that. Took about 3 days of trouble shooting and 1 hour of resolution.