configure firewall & NAT & cache with each other

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hello all,

I have 2 box for cache, bandwidth manager, firewall, NAT .

one box is cache server(squid) only. and another box is bandwidth manager, firewall, NAT server.

I haven't any rule on my squid box. the default gateway of my users is my firewall box. my firewall box has 2 ethernet(user side and internet side).

ip of firewall box is :

iptables_box_ILAN=172.16.5.5 (user side)(eth0)

iptables_box_WLAN=212.213.38.100 (internet side)(eth1)

ip of cache box is :

squid_box=172.16.5.6

the default gateway of cache box is firewall box

I use of this rule for NAT :

iptables -t nat -A POSTROUTING -s 172.16.5.0/24 -o eth1 -j SNAT --to 212.213.38.100

now I want redirect the request on port 80 to cache box :

local_network=172.16.5.0/24

iptables_box_ILAN=172.16.5.5

iptables_box_WLAN=212.213.38.100

iptables -t nat -A PREROUTING -i eth0 -s ! $squid_box -p tcp --dport 80 -j DNAT --to $squid_box:3128

iptables -t nat -A POSTROUTING -s $local_network -d $squid_box -o eth0 -j SNAT --to $iptables_box_ILAN

iptables -A FORWARD -s $local_network -d $squid_box -i eth0 -o eth0 -p tcp --dport 3128 -j ACCEPT

when I don't use of NAT it is correct. and when I set all on one ethernet it is correct.

but when I have two ethernet and I NAT on firewall box it's not work correct.

Please help me.

Thanks.

 



		
---------------------------------
Do you Yahoo!?
 Yahoo! Search presents - Jib Jab's 'Second Term'

[Index of Archives]     [Linux Netfilter Development]     [Linux Kernel Networking Development]     [Netem]     [Berkeley Packet Filter]     [Linux Kernel Development]     [Advanced Routing & Traffice Control]     [Bugtraq]

  Powered by Linux