if u have cisco router u can do that

if u don't have cisco router/firewall u can still do with iptables/proxy server.

just allow only your required service/ports in proxy server & iptables

by default wan to lan is restricted

ok bye.

On 2/22/12, Pinakin Bhatt
wrote:
> Hi.All,
>
> i need your best suggestion , i have one gateway server ( RHEL 5) and have
> configured transparent proxy.
>
> Now my requirement are as under
>
> 1) i want to block all the traffic from WAN side to LAN. ( not any single
> port should open)
>
> 2) only HTTP , HTTPS and FTP port should be open from LAN to WAN.
>
> 3) Nobody is try to attack on my gateway server,or attack on any hidden
> port.
>
>
> Let me know your valuable suggestion.
>
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