ssh scp question

[Lennart Sorensen]

On Thu, Dec 30, 2010 at 04:13:50PM -0500, Rajinder Yadav wrote:
> i notice when i do a scp from my linux laptop to my main linux box there  
> is considerable delay before i am asked for a password to begin the scp 
> op
>
> if i do this from my other linux box there is hardly any delay, what  
> could cause the delay?

Usually reverse dns lookup timeout.

If the box you ssh to has dns enabled (and most do of course), it will
try to do a reverse lookup on your IP.  Of course if you don't have
reverse dns setup for your local network, this won't resolve, and the
dns timeout can take a while.

A hosts file entry for each local machine, or setting up a reverse dns
server for your local network solves it.

Or maybe you could configure sshd to not do a reverse lookup on incoming
connections.

-- 
Len Sorensen
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