search for: ssh2_disconnect_by_application

https://bugzilla.mindrot.org/show_bug.cgi?id=2057 Bug ID: 2057 Summary: ssh should treat "Received disconnect" messages as errors Classification: Unclassified Product: Portable OpenSSH Version: -current Hardware: All OS: All Status: NEW Severity: minor Priority:

...-1269,6 +1269,10 @@ > * and indeed OpenSSH feels this is more polite than sending a > * DISCONNECT. So now we don't. > */ > + > + /* We do again. */ > + ssh2_bpp_queue_disconnect(s->ppl.bpp, "disconnected by user", > SSH2_DISCONNECT_BY_APPLICATION); > + > ssh_user_close(s->ppl.ssh, "All channels closed"); > return; > } Yeah, you're adding a new thing that will be logged. IMO you should try to figure out why the "Connection closed" message that is present in the debug log you sent...

I am testing with a 5.4p1 client and have noticed, on the server side, that sometimes an SSH_MSG_DISCONNECT message is received with the following 28-byte long payload: 0x00 0x00 0x00 0x0b Reason: SSH_DISCONNECT_BY_APPLICATION 0x00 0x00 0x00 0x14 Description string length: 20 bytes 0x64 0x69 0x73 0x63 0x6f 0x6e 0x6e 0x65

On Tue, 21 May 2024, Opty wrote: > Hello, > > can anyone confirm that OpenSSH server doesn't log client disconnect > without SSH_MSG_DISCONNECT? OpenSSH logs the disconnection regardless of whether the client sends SSH_MSG_DISCONNECT or just drops the connection. A little more information may be logged from the disconnect packet if it was sent, but there should always be a