Ipchains and traffic accounting question
Hello all,
i have a simple question about ipchains and accounting traffic.
I have 3 pcs at home, one is working as router to the internet and has set
up ipchains as firewall. Now i want to see, how much traffic pc A
(192.168.1.2) makes.
All the pcs are connected via an old 10 Mbit ethernet card through a BNC
cable.
I tried to set up rules like:
ipchains -A input -s 0.0.0.0/0.0.0.0 80:80 -d 192.168.1.2/255.255.255.255 -p
tcp -i ippp0 -j ACCEPT
or
ipchains -A input -s 0.0.0.0/0.0.0.0 80:80 -d 192.168.1.2/255.255.255.255 -p
tcp -i eth0 -j ACCEPT
As far as i understand, ipchains then should recognize the WWW-traffic of pc
A incoming from the internet. Also, i've made the same rule for the output
chain.
The strange now is, that ipchains don't seem to find matching packets.
Although pc A is looking some webpages, ipchains don't increment the
counters i can look at with ipchains -L -v.
Has anyone a suggestion about what i'm doing wrong here?
Could this problem has something to do with the masquerading set up on the
router (perhaps ipchains doesn't know, that an incoming packet is for pc A
because the destination is the router and just after demasquerading the real
destination address is known?)?
Thanks for any help!
Greetings,
Matthias
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