SSH login take too much time in my CentOS machine, and also a ftp server is running on it.

Please help me to speedup the login time for both root and ftp user. I tried some tricks but no improvements.

Tries are shown below:

Already added some thinks into cat /etc/ssh/ssh_config

GSSAPIAuthentication no

UseDNS no

SSH login time is :

real 0m18.950s

user 0m0.022s

sys 0m0.016s

  • 1
    how much ram, what cpu, how much hdd space available, speed of NIC? – td512 May 11 '15 at 6:31
  • 1
    Maybe this might help: serverpronto.com/accounts/… – Linux NewB May 11 '15 at 9:01
  • Are those config changes to ssh_config or sshd_config? It's often the server doing reverse dns that slows things up for me – Eric Renouf May 11 '15 at 15:13
  • Also, when connecting via ssh, use a couple of v parameters to make your ssh client give you some extra info for your troubleshooting. This may show you the bit of information you are looking for. – Tomas Tudja May 14 '15 at 2:02

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