Using ssh with OpenBSD 3.4

Hi.
I've recently installed a new box with OpenBSD 3.4. Now, the localhost ssh logon works, but a remote logon from a Windows machine via Putty, doesn't. The telnet and other services works correctly. Any ideas?

AFAIK OpenBSD doesn't allow any remote connections in the default configuration. You have to explicitly enable them (which you probably did for telnet and "the other services").

Now, how to do that? To be honest, I don't know (Hello, Scorps?).

I guess one or more of these will help:
IF...
...it is not listening on the network interface
-> edit /etc/ssh/sshd_config
...it is run via inetd+tcp wrappers
-> edit /etc/hosts.allow
...OpenBSD enables the packed filter and denies everything by default
-> well, ... err, ... hmmm, ... consult the manual about ipfilter.

Another idea is that it possibly doesn't allow SSH1, you have to tell putty to use SSH2 then or enable SSH1 in /etc/ssh/sshd_config.

hth,
M.

Thanks, I'll check it soon. Unfortunately, it's currently unreachable via Telnet, probably hanged, as usual. And it's not the first time. A most secure OS ever, hangs every day... Hmm, maybe I should switch to FreeBSD..

Actually, OpenBSD does run sshd by default install (NetBSD has it turned off). It also runs inetd by default, but all the services in inetd.conf are turned off in the default install.

I was going to ask you to check the IP address on the NIC, but if you can telnet to it using the same IP address, then this is not the case. BTW, does putty print some sort of error message or what? It might be helpful to know this information.

Hi.
Well, I was going to tell you the error, but miracaly, it works. Putty suggests to store the keys, and then connects. Weird stuff, maybe somehow related to this hardware problem. I've changed the whole PC, leaving only the disk, with the NIC of the same brand. Now the hangs are gone, and it connects well. Maybe the NIC was damaged, maybe something else. Well, back to shutting down and closing telnet daemon Thanks anyway.