In my lan i have installed squid server in mandriva 2009 its working fine but i have a ip cam for video recording at remote site of a online exam . i have alloted ip address for this cam .now i need port farwarding for that ip at 10001 port in mandriva 2009. i have done it at router but i want to do it in my linux server

You need to give us more detail. Network interfaces, and IP addresses of everything relevant would be a start.

My lan subnet is 192.168.0.0 , squid proxy server ip address is 192.168.0.1 and the ip of ip cam is 192.168.0.200. i want to port farwarding for this ip .

Is the squid proxy acting as a NAT router? Where should the port be forwarded from? Are you trying to connect to the IP Camera from the internet? We still need more information.

Run these commands from the Squid server and post the output to us:

squid proxy work as nat router.
i want to connect ip cam with internet . it will be used as virtual host. my lan information is:-
ifconfig :
eth0 Link encap:Ethernet HWaddr 00:E0:4C:39:40:A5
inet addr:192.168.0.1 Bcast:192.168.0.255 Mask:255.255.255.0
inet6 addr: fe80::2e0:4cff:fe39:40a5/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:3991 errors:0 dropped:0 overruns:0 frame:0
TX packets:5757 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:582097 (568.4 KiB) TX bytes:6029704 (5.7 MiB)
Interrupt:17 Base address:0x2c00

eth1 Link encap:Ethernet HWaddr 00:1F:C6:27:439
inet addr:202.131.116.116 Bcast:202.131.116.119 Mask:255.255.255.248
inet6 addr: fe80::21f:c6ff:fe27:43d9/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:10980 errors:0 dropped:0 overruns:0 frame:0
TX packets:11532 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:7897350 (7.5 MiB) TX bytes:1479927 (1.4 MiB)
Memory:fe940000-fe960000

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:86 errors:0 dropped:0 overruns:0 frame:0
TX packets:86 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:5630 (5.4 KiB) TX bytes:5630 (5.4 KiB)

[root@localhost aaa]# ip route
202.131.116.112/29 dev eth1 proto kernel scope link src 202.131.116.116 metric 5
192.168.0.0/24 dev eth0 proto kernel scope link src 192.168.0.1 metric 10
169.254.0.0/16 dev eth1 scope link metric 5
169.254.0.0/16 dev eth0 scope link metric 10
default via 202.131.116.113 dev eth1 metric 5

We need that too.

after iptables-save command i did not get any out put

If the default gateway of your IP camera is set to 202.131.116.116 then this rule will do the job:
If no default gateway is set on the camera you need this too:

Oh, you also need to enable IP forwarding, if you haven't already.

Check if you have by running If the output of that command is "0" run this:

my ip cam gateway is 192.168.0.1. plz give me code according this.

I just did.

1 members found this post helpful.

[QUOTE=SuperJediWombat!;3975999]I just did.[/Q
Thanks sir
You are great in linux

No problem, I'm glad that it worked.

- SuperJediWombat

I have one question again.

in my windows xp network i have installed mandriva 2009 and implimenting squid proxy server. my local xp computer accessing internet fine but iwant to allow outlook express and yahoo messnager. how can i do this

Google this:
iptables masquerade