[Techtalk] ssh and name resolution

Gayathri Swaminathan gayathri.swa at gmail.com
Tue Sep 9 01:52:15 UTC 2008


On Mon, Sep 8, 2008 at 7:26 PM, Maria McKinley <maria at shadlen.org> wrote:

> Susan Baur wrote:
> > Haven't ever run into it myself, but I'm wondering if it might be having
> > problems with the @. Does it resolve without the user part? If so, use
> > ssh -l parody homer.u.washington.edu  instead. (which resolved fine for
> > me).
> >
> > Also, maybe try adding the server into your /etc/hosts file.
> >
> > --Susan
> >
>
> The @ does not make any difference. And I get this result with all
> machines I try to ssh to, so adding to my /etc/hosts would get rather
> tiresome, I'm afraid.
>
>
Hey Maria:

Seems to work for me ( see output below )

Is your reverse DNS well?

<snip>
athena# ping homer.u.washington.edu
PING homer.u.washington.edu (140.142.15.9) 56(84) bytes of data.
64 bytes from homer22.u.washington.edu (140.142.15.9): icmp_seq=1 ttl=51
time=725 ms
64 bytes from homer22.u.washington.edu (140.142.15.9): icmp_seq=2 ttl=51
time=769 ms
64 bytes from homer22.u.washington.edu (140.142.15.9): icmp_seq=3 ttl=51
time=774 ms
^C
--- homer.u.washington.edu ping statistics ---
4 packets transmitted, 3 received, 25% packet loss, time 4060ms
rtt min/avg/max/mdev = 725.096/756.476/774.455/22.290 ms

athena#telnet homer.u.washington.edu 22
Trying 140.142.12.214...
Connected to homer.u.washington.edu.
Escape character is '^]'.
SSH-1.99-OpenSSH_4.2
'^]' .
Protocol mismatch.
Connection closed by foreign host.

athena#ssh 140.142.15.9
The authenticity of host '140.142.15.9 (140.142.15.9)' can't be established.
RSA key fingerprint is 22:c7:83:db:1c:c5:7d:10:15:23:f5:64:36:af:b5:b2.
Are you sure you want to continue connecting (yes/no)? no
Host key verification failed.

</snip>
-- 
Gayathri Swaminathan
gpgkey: 3EFB3D39
Volunteer, FDP


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