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Re: IpTables Displays Ultra Slow

On Friday 16 November 2012 06:05 PM, Tóth Tibor Péter wrote:
iptables -L -n
Is fast as supposed to be.

What causing -L being slow? and what is the reason for the login prompt being slow as well ?


-----Original Message-----
From: ha [mailto:hiei.arhiva@gmail.com]
Sent: Friday, November 16, 2012 11:24 AM
To: debian-user@lists.debian.org
Subject: Re: IpTables Displays Ultra Slow

what about iptables -L -n ?

On 11/16/2012 10:58 AM, Tóth Tibor Péter wrote:
I have some firewall rules set up.
When I do "iptables -L" it starts to display the rules but after the first 3 lines stops and before every rule it waits a little bit. about 10-15 secs.
When I have Iptables on the server, the  ssh login is also slow. Login prompt is fast, but have to wait a while to get to the password prompt.

What could cause this ?

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The -n option doesn't resolve the the ip address's hence faster.

For the slow login, ie takes a while to get the password prompt: add "UseDNS no" in /etc/ssh/sshd_config and reload ssh "service ssh reload"

Best Regards.

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