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Howto fix delay in SSH Login

Written by Mel Kham on . Posted in Frequently Asked Questions

Question : How to fix delay in SSH Login ?

Answer  :

DNS lookup query is an SSH feature that you can find in most Linux distros, this feature is responsible for the  delay because SSH wait for a response of reverse DNS lookup query that is been made to DNS Server.

To overcome this issue, please follow these steps:

1- Edit  /etc/ssh/sshd_config  on sshd  Server

vi /etc/ssh/sshd_config

and add this DNS option to the file:

UseDNS no

save  and exit
2- Now add the following line to your /etc/resolv.conf.

options single-request-reopen

Restart  sshd  

 /etc/init.d/sshd  restart

Done

For questions please refer to our Q/A forum at : http://ask.unixmen.com

Mel Kham

Founder of Unixmen, Living in Amsterdam. Am working in my free time to help people to understand the Opensource and to explain them in easy way how to make the fist steps to the the light. Working day and night with my Co-founder Zinovsky to keep this website live even with less resources.
  • Srba

    Doesn’t work in Ubuntu…delay is still here :(

    • Mad_skin

      worked 4 me using xubuntu 12.04

  • Rl Amorato

    Try adding this to ~/.ssh/config
    AddressFamily inet

  • Kasmodan

    If you see this = #useDNS no then it is allready commented out try turning off this then = GSSAPIAuthentication no

    that worked for me.

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Recent Comments

cave

|

it can be used to talk or chat through the internet,

it is using strong encryption.

but for example TOR is using some obfuscation because some countrys try to block all outgoing connections which can not be scanned with DPI

And the TOR Project is facing an arms race in obfuscation and encryption detection.

cave

|

You can friend someone if you give him your public Certificate.

both peers must friend each other.

i suggest to not enter a valid e-mail address. it is not necessary, but pgp needs a mail addy. something@something.so fits perfectly… :)

http://redd.it/18vsq5 <– faq, featurelist, todo, howto, useful links to manual wiki etc, …

you can connect to chatservers, which will give you access to chatlobby, where always some people are lurking.

#1 https://www.f2f-fr.net/w2c/en/
#2 http://retrosharechatserver.no-ip.org/w2c/en/

and in this rooms, you can find other people to talk and friend.

cave

|

http://redd.it/18vsq5
please have a look at this link. it is a FAQ, QuickTip, HowTo, etc etc etc …

If you want to make friends, please use the Chatservers.
#1 https://www.f2f-fr.net/w2c/en/
#2 http://retrosharechatserver.no-ip.org/w2c/en/

if you enter your certificate, the chatserver adds you as his friend and shows his certificate too add him to your friends.

After the connection to the chatservers is established, you can join a few chatrooms where the chatserver is lurking.

in this rooms are other people too help you and make first friends and get into the network.

add friends only with wisdom. if you friend some policeman, it will be problematic like in real life.

best is to add only people you trust in real life or trust from other communitys too. and not to add random unkown strangers.

If you have questions, ask them in the chatlobbys, there is always someone to answer them.

please read http://redd.it/18vsq5

or question me here :)

Ladi Oyekanmi

|

Could you please assist in step by step on how to install nagios on solaris

Adhraa

|

Greate tutorial :)

 
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