Re: REDIRECT question

[Ruslan Spivak <alienoid@is.lg.ua>]

Chris Wilson wrote:

>Hi Ruslan,
>
>  
>
>>I just want to be sure that after redirecting, the packet is going to 
>>input chain where i can filter it. (am i right?)
>>    
>>
>
>As far as I know, that's right.
>
>Cheers, Chris.
>  
>
One more question, please.

I have three nets that located in our city and i treat them as local, 
cause we have direct connection with that networks.
i need to redirect traffic that is going to outside world to port 
3128(squid) and traffic to local nets leave alone.
Following your previous advices, i have made suggestions about how it 
should look:

LOCAL_NET_1=193.108.240.0/22
LOCAL_NET_2=193.220.70.32/27
LOCAL_NET_3=193.220.70.64/27

iptables -t nat -N REDIRECT_CHAIN
iptables -t nat -A REDIRECT_CHAIN -p tcp -d  $LOCAL_NET_1 --dport 80 -j 
RETURN
iptables -t nat -A REDIRECT_CHAIN -p tcp -d  $LOCAL_NET_2 --dport 80 -j 
RETURN
iptables -t nat -A REDIRECT_CHAIN -p tcp -d  $LOCAL_NET_3 --dport 80 -j 
RETURN
iptables -t nat -A REDIRECT_CHAIN -p tcp --dport 80 -j REDIRECT 
--to-port 3128
iptables -t nat -A PREROUTING -j REDIRECT_CHAIN

Can you tell me if i'm on on a right way?

Again, thanks in advance.

Best regards,
Ruslan