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"""
This is a couple of rules to setup logging of rejected packets (if you want to)
"""
remove_cruft = True
logging_enabled = False
# remove cruft
if remove_cruft:
# reject invalid connections, don't log them
iptables("INPUT", "-m state --state INVALID -j DROP")
iptables("FORWARD", "-m state --state INVALID -j DROP")
iptables("OUTPUT", "-m state --state INVALID -j DROP")
# log unknown packets with a limit
if logging_enabled:
iptables("INPUT", "-j LOG -m limit --limit 1/sec --log-prefix \"I-unknown:\"")
iptables("FORWARD", "-j LOG -m limit --limit 1/sec --log-prefix \"F-unknown:\"")
iptables("OUTPUT", "-j LOG -m limit --limit 1/sec --log-prefix \"O-unknown:\"")
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