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I am using PuTTY to log into my local server, but it takes about 1.5 seconds to log in (from the click on 'Connect' to working command prompt, most of time is spend on "Authenticating with public key...").

I know many see even slower speeds, but I would like to have not more than 0.1 sec. login time.

I already set UseDNS=no, allowed only IPv4 in the PuTTY client, and reduced key length from 4k down to 1k.

Any other suggestions to speed it up even further?

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up vote 2 down vote accepted

Found solution myself finally:

  1. aptitude remove landscape-client landscape-common
  2. comment line session optional pam_motd.so in /etc/pam.d/login and /etc/pam.d/sshd

Now login is INSTANT!

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do you have this connection problem only with this host oder with all hosts?

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This is a comment. From a reputation count of 50, you can comment everywhere. Please remove this "answer" (comment) and add it to the question above. – Lekensteyn Jan 31 '11 at 17:23
Well, some a faster, some are slower. But as this is under my full control, it would be nice to make it faster. – BarsMonster Jan 31 '11 at 17:54
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