Error in port-forwarding in openssh-2.9p2
There seems to be something wrong with the port-forwarding code in openssh-2.9p2.
Symtoms
When trying eg "ssh -l <username> -R <remote port>:<local host>:<local port> <remote host>" it intead try to forward to 0.0.0.0 at port 0.
Solution
Apply the following patch
--- channels.c 2001/05/08 19:17:30 1.114
+++ channels.c 2001/05/09 22:46:11
@@ -771,8 +771,9 @@
rtype = (c->type == SSH_CHANNEL_RPORT_LISTENER) ?
"forwarded-tcpip" : "direct-tcpip";
- nextstate = (c->host_port == 0) ? SSH_CHANNEL_DYNAMIC :
- SSH_CHANNEL_OPENING;
+ nextstate = (c->host_port == 0 &&
+ c->type != SSH_CHANNEL_RPORT_LISTENER) ?
+ SSH_CHANNEL_DYNAMIC : SSH_CHANNEL_OPENING;
addrlen = sizeof(addr);
newsock = accept(c->sock, &addr, &addrlen);
Links
http://marc.theaimsgroup.com/?l=openssh-unix-dev&m=98945256900402&w=2
Author Per-Olof Pettersson