This is actually an interesting case. Openbsd implemented timing out the connection by adding it to the tty[1]. this sort of shenanigan would never fly on linux

This is actually an interesting case. Openbsd implemented timing out the connection by adding it to the tty[1]. this sort of shenanigan would never fly on linux, "what! improve an unrelated established system, I don't think so." So for a long time doas on linux was not able to timeout a session. At some later point the timeout code was re-implemented on linux using a different mechanism[2]. If your linux doas does not timeout, try updating it? 1. http://man.openbsd.org/tty.4#TIOCSETVERAUTH http://man.openbsd.org/tty.4#TIOCSETVERAUTH 2. https://github.com/Duncaen/OpenDoas/blob/master/timestamp.c https://github.com/Duncaen/OpenDoas/blob/master/timestamp.c