i have lately installed SQUID proxy and to avail all the facilities i am
using it as Proxy mod not as Transparent mode neither i wanted to.
now the problem part is i want to ping outside host to verify the
connectivity of internet for that all the time i have to open the SSH the
console and ping. but what i want is, i should also ping it from host
computers as well. however i don't want to NAT all the traffic coming from
inside and going outside. rather what i want is just to NAT only ICMP Echo
Rep and Req so that i can at least ping outside host with out SSH the Squid
console. which is very bothering.
My network diagram is very simple
<Squid Box>--------eth0(192.18.30.2)----------------------<192.168.30.1-ISP
Router>
I
I
eth1(192.168.1.1)
I
I
(local network 192.168.1.0/24)
And why i am using Squid as a Gateway because i just want to minimize
unwanted nods that needs to be monitor all the time and batter control over
traffic with IPtables firewall. i am using this line to NAT very specific
ports to allow certain facilities like Email , Remote desktop and stuff.
and this is working for me.
iptables -t nat -A POSTROUTING -p TCP --dport 110 -j MASQUERADE
now i am stuck on allowing the ping traffic. please help
Thanks,
