err. Maybe it's me but to answer his original question - it's more than likely a DNS lookup issue.

Have a look in /etc/ssh/sshd_config and add in:

UseDNS no


restart the sshd daemon with a kill -HUP command and you should have no problems.

Alternatively, you could fix your dns lookup issues..

Cheers - nick




On 4 May 2007, at 14:06, Fred Crowson wrote:

Tang Tse wrote:
Thanks for the answear,
Is it secure to open DNS ports to outside world? Or you mean to open open outgoing DNS conections? If i want to redirect incomming ssh connections
from internet  to some inside server, should  i open DNS incoming?
Thanks!!

Not necessarily - but how about a rule like:

pass out on $ext_if proto { tcp, udp } from any to $my_nameserver \
                port 53 keep state
HTH

Fred

PS http://home.nuug.no/~peter/pf/ is well worth reading
--
http://www.crowsons.net/puters/x41.php

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