"I have seen a lot of write-ups that recommend using a different port than tcp/22... [...] security by obscurity always leads to something weird [...] using SE

"I have seen a lot of write-ups that recommend using a different port than tcp/22... [...] security by obscurity always leads to something weird [...] using SELinux, you are forced to run the secure-shell server on tcp/22." Three cheers for two great reasons to not change the default port for SSH, among a lot of other detailed recommendations.