max ftp conntrack problem

max ftp conntrack problem

[zhengchuanbo]

When we use leapftp to download from ftp server,the connection often 
broke for a while in case of large rate. the rate was about 500k.
When I checked the log on the netfilter gateway, I got the following 
message,

max number of expected connections 1 of ftp reached for 130.18.90.155->159.226.61.190, reusing
  
I search for the answer,and got the answer that when the server changes
from active mode to passive mode, this would happen.
But how to solve the problem?  We tried several ftp tools such as flashflx,
and it is always the same problem.
Thanks.
	
	
regards,
		
Jack Zheng
zhengcb@netpower.com.cn
	

Re: max ftp conntrack problem

[Harald Welte]

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On Wed, Nov 05, 2003 at 11:41:30AM +0800, zhengchuanbo wrote:
> 
> When we use leapftp to download from ftp server,the connection often 
> broke for a while in case of large rate. the rate was about 500k.
> When I checked the log on the netfilter gateway, I got the following 
> message,
> 
> max number of expected connections 1 of ftp reached for
> 130.18.90.155->159.226.61.190, reusing
>   
> I search for the answer,and got the answer that when the server changes
> from active mode to passive mode, this would happen.
> But how to solve the problem?  We tried several ftp tools such as flashflx,
> and it is always the same problem.

This is not an error message.  It is just a notification, that the
previous (PORT) expectation has been replaced by the new (PASV)
expectation.  Nothing to worry about.

> Thanks.

-- 
- Harald Welte <laforge@netfilter.org>             http://www.netfilter.org/
============================================================================
  "Fragmentation is like classful addressing -- an interesting early
   architectural error that shows how much experimentation was going
   on while IP was being designed."                    -- Paul Vixie

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