Is my understanding correct that endlessh only listens on the external IP address, not on the local IP address? If I try mylocalmachine$ telnet -4 myvps 2000 endlessh works as expected. But if I SSH into my VPS machine and try myvps$ telnet 127.0.0.1 2000 the connection times out. Same for "-6" and "::1" for IPv6. (feel free to stop reading here and ignore the rest if you're not curious why I'd want to do a dumb thing like serve endlessh to localhost) Thanks! -tim / @gumnos gory details: I know it seems a dumb thing to serve endlessh to localhost, but I encountered an issue FreeBSD's pf(4)'s divert-to only talks to localhost. I've set up a whole range of ports on either side of my real SSH port to make it more annoying to find the real one unless you actually know the reall port#. However at least on FreeBSD a divert-to seems to only talk to 127.0.0.1 or ::1 rather than talking on the external IP address. I tried endlessh_port=2000 real_ssh=2345 ext_ip=192.168.1.32 pass in log inet proto tcp from any to any port $endlessh_port pass in log inet proto tcp from any to any port 2001:2344 \ divert-to $ext_ip port $endlessh_port pass in log inet proto tcp from any to any port 2346:2999 \ divert-to $ext_ip port $endlessh_port (with similar pairs for inet6) When loading, pf seems to ignore the "ext_ip" bit and just use 127.0.0.1 instead. I've worked around it by doing a "rdr" in pf to redirect the whole swath of ports but my understanding is that divert-to should be more resource-friendly. In case you want to follow along, the pf.conf that work (possibly removing the back-slashes): rdr pass on $if_external inet proto tcp \ from any to any port 2001:2344 -> \ $ip4_external port $endlessh_port rdr pass on $if_external inet proto tcp \ from any to any port 2346:2999 -> \ $ip4_external port $endlessh_port
It *should* be binding to all available interfaces. In the source you can see it uses INADDR_ANY or in6addr_any. This is currently not configurable, meaning you haven't accidentally changed it. Testing now on both Debian and FreeBSD, I can connect to Endlessh via localhost using telnet just as you showed. Perhaps you have a local system configuration that's causing an issue? Your requirement to have the service available on localhost makes sense, and I'd expect Endlessh to support it.