Re: Port-forwarding Perfomance

[Rudi Starcevic <tech@wildcash.com>]

Hi,

>1 - you have a speed/duplexing mismatch between the internal interface
>of the firewall and your internal switch...or the windows box and the
>internal switch (but you should notice that slowing internal
>transfers)...or both.
>  
>

Thanks, am checking on this one now ..

>2 - your internet connection is ppp/pppoe and you have an MTU problem.
>since the linux gateway is directly connected, it knows to lower the MTU
>of the external interface, but machines behind it would continue to
>assume an MTU of 1500; and in the absence of functioning PMTU
>discovery, would suffer from significant packet loss due to the need for 
>fragmentation.
>  
>
This is on a 100MB link at choopa .com.
The windows machine being forward to is on a Gigabit network.

>3 - you're using some traffic shaping script (like the wondershaper) and
>it is misconfigured.
>  
>
Only using Iptables.

Thanks for these leads, am following up now.

Cheers
Rudi


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