GitLab.com now supports an alternate git+ssh port

This post details the implementation of an alternate `git+ssh` port (443) on GitLab.com to circumvent network firewalls that block the default SSH port (22). It explains the problem of network restrictions, the solution of using port 443, and the specific infrastructure setup involving HAProxy nodes and a separate Azure load balancer to forward TCP connections from port 443 to port 22. Instructions are provided on how to update the `~/.ssh/config` file to use this alternate connection.