How can I calculate traffic from iptables?

Question

Debian

Good day, gentlemen.
I have an iptables gateway. I wanted to count the traffic by interfaces, and it would not hurt to see who goes where and where. Googled for an hour, of the working options, only forward http through squid. I remember this option from the early 2000s. Perhaps you have already come up with something better? Prompt, than it is better to count a traffic on the gateway?

Answer 1

Somehow it could always seem like this:

#создаем чейн
iptables -N TRAFFIC_ACCT_IN
#клеим интерфейс
iptables -I FORWARD -i eth0 -j TRAFFIC_ACCT_IN
#туда-же адрес
iptables -A TRAFFIC_ACCT_IN --dst 192.168.1.2
#А потом занимаемся математикой и выводим результат
iptables -L TRAFFIC_ACCT_IN -n -v -x | awk '$1 ~ /^[0-9]+$/ { printf "IP: %s, %d bytes\n", $8, $2 }'

Answer 2

collect and analyze Netflow logs