Created attachment 159484 [details]
log ip-numbers for failed socket connect attempts
Running ssh, logfiles are swamped with lines like:
fatal: Read from socket failed: Connection reset by peer [preauth]
Which is rather useless for tools like sshguard and/or fail2ban
But this patch changes this info to:
Aug 2 19:37:32 zfs sshd: Read from socket failed: 18.104.22.168 [preauth]
Aug 2 19:37:32 zfs sshd:fatal: Read from socket failed: Connection reset by peer [preauth]
I decided to keep the older log line as well, to keep consistent what was there already. I do not know if any logfile analysers care about this line.
Thus giving other tools to opportunity to act on (now) known abuse ip-numbers.
PS: not sure if the patch goes to FreeBSd, or perhaps upstream to openssh?