There’s a ton of tech I take for granted but barely discuss. Mosh has received all but one blog mention here, but I use it daily. I consider it mandatory for administering FreeBSD, NetBSD, and Linux servers in remote availability zones.
Mosh sessions are specifically designed for fault tolerance. Unlike SSH, if you drop a connection, Mosh will continue to keep the session alive for you to reattach. No more ah crap, did I run that session inside a screen?!
The side effect of this is you may encounter these when you re-connect to a server:
Mosh: You have 2 detached Mosh sessions on this server, with PIDs: - mosh  - mosh 
If you don’t need them, just kill their process. Too easy:
# kill 49443
This also unintentionally demonstrates FreeBSD PID randomisation; specifically increment randomisation. Linux doesn’t support them, for better or worse depending on who you speak to. I concede they’re no panacea, and random PIDs can introduce their own problems, but security is abouy layers. It’s good FreeBSD affords us the option.