How can I check the hit count for each rule in iptables?
firewall, iptables, linux
Solution
`iptables` will list packet and byte counters if you specify option `-v` for verbose, e.g. `iptables -vL`. Likewise `iptables-save` will list all entries including the mentioned counters for each chain, but not for each table entry (on some systems `iptables-save` requires option `-c` to include counters).
Problem
I want to know how can I find out which rule was accessed and how many times, from the access list I have created using iptables. My firewall has over 1000 input and output rules in iptbales; I want to find how many times each of them were accessed. For example, suppose I have the following rules: ``` iptables -A INPUT -i eth0 -p tcp --dport 22 -m state --state NEW,ESTABLISHED -j ACCEPT iptables -A OUTPUT -o eth0 -p tcp --sport 22 -m state --state ESTABLISHED -j ACCEPT iptables -A INPUT -i eth0 -p tcp --dport 80 -m state --state NEW,ESTABLISHED -j ACCEPT iptables -A OUTPUT -o eth0 -p tcp --sport 80 -m state --state ESTABLISHED -j ACCEPT iptables -A INPUT -i eth0 -p tcp --dport 443 -m state --state NEW,ESTABLISHED -j ACCEPT iptables -A OUTPUT -o eth0 -p tcp --sport 443 -m state --state ESTABLISHED -j ACCEPT ``` I want to find out how many times each of the rules 1, 2, 3, 4, 5 and 6 were hit.