Hello, While auditing some system and setting up some ssh tunnels, I asked myself if there was a way to control ssh tunnel usage outside of restricting them with OpenPermit in sshd config or authorized_keys. If found this page with an audit patch https://blog.rootshell.be/2009/03/01/keep-an-eye-on-ssh-forwarding/ Another page which referenced other monitoring way https://serverfault.com/questions/181660/how-do-i-log-ssh-port-forwards Patch does not seem to be very complicated. It has been "submitted" on the list in 2013 with no response https://marc.info/?l=openssh-unix-dev&m=136197476517114&w=2 Any chance for it to be reviewed ? Thanks a lot for your great work Cheers J