iptables log analysis

[m.w.chang]

anyone got an *existing* script that could list
the ports being blocked by iptables in /var/log/messages
plus the number of hits. like this:

# chkhit /var/log/messages
port,hits
25,10
139,1
6112,20
#

sorting is not important.

I think I need to use perl if I am to write one.
can I do it with bash+utils only?

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