Curious if this could work to minimize 2FA authentications for repeated short SSH sessions? Particularly ssh commands run by 3rd party software such as Sourcetree. Every new connection requires acknowledgement of 2FA push notification.
https://en.m.wikibooks.org/wiki/OpenSSH/Cookbook/Multiplexin...
It creates a control socket that lasts up to x minutes after your last session closes, so for me, all day + 15 minutes, which then new connections go over instead of re-athenticating.
Many places disable it for "security" reasons.