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Slow Ftp, reverse DNS lookup

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Name: Softech
Date: November 27, 2001 at 07:15:23 Pacific
Comment:

Hi, I am trying to set up my ftp server. I know it's the reverse DNS that make my FTP initial connect slow. But don't know how to fix it.

My system: Redhat 7.0 with no DNS server installed.

I ftp from my other computer in the same network, I have to wait at least 45 sec. before username prompt comes up.

If I ftp from outside, the username prompt never comes up as the connection got cut off after a long wait , couple minutes.

I know it's the reverse DNS, but how to fix it?
Can I disable it in FTP access?

I know one solution is to change the /etc/hosts and add the IP address there. But I am trying to give fTP access to my friends and I don't know their IP, even I know now, they are using DHCP and their IP change all the time. So, that editing /etc/hosts is not my solution

Is there anyway to fix it?

Thanks so much

Softech



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Response Number 1
Name: Bill
Date: February 14, 2002 at 15:20:03 Pacific
Reply:

I was having the problem as well...
You may have to disable ReverseDNS and or turn off Ident lookups.

I am using proftpd and entered the following into my /etc/proftpd.conf file:

UseReverseDNS off
IdentLookups off

Now it is like lightening!

Hope that helps!

wb


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Response Number 2
Name: lh
Date: March 6, 2002 at 21:37:08 Pacific
Reply:

How to solve this problem when wu-ftp is used?


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