iptables redirect

[Pol Hallen <deben@fuckaround.org>]

Hi all,

I've a small lan:

dsl<--->server1<--->lan1-192.168.10.0/24 (NIC1)
                    lan2-192.168.20.0/24 (NIC2)

I've squid proxy on lan2 (ip192.168.20.250)

iptables -t nat -A OUTPUT -p tcp --dport 80 -j DNAT --to-destination 
192.168.20.250:8080

it works (I see squid logs on 192.168.20.250) but is very very very 
[...] slow :-/

squid on 192.168.20.250 (from same network works ok)

how to audit the problem?

thanks for help!

Pol