paramah/ossec-blacklist
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fix IP regexp to support CIDR subnets and split src,dst into two separate rules

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sent by Pierre Gaufillet
This commit is contained in:
Pawel Krawczyk 2015-06-02 10:15:44 +01:00
parent 75cee0fdfe
commit 480715f44c
1 changed files with 5 additions and 3 deletions
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8
blacklist.sh
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@ -83,7 +83,7 @@ for url in $urls; do
fi
fi
sort -u <"${unsorted_blocklist}" | egrep "^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$" >"${sorted_blocklist}"
sort -u <"${unsorted_blocklist}" | egrep "^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}(/[0-9]{1,2})?$" >"${sorted_blocklist}"
# calculate performance parameters for the new set
tmp_set_name="tmp_${RANDOM}"
@ -112,9 +112,11 @@ for url in $urls; do
ipset -! -q restore < "${new_set_file}"
if [ "$1" = "log" ]; then
iptables -A ${blocklist_chain_name} -m set --match-set "${set_name}" src,dst -m limit --limit 10/minute -j LOG --log-prefix "BLOCK ${set_name} "
iptables -A ${blocklist_chain_name} -m set --match-set "${set_name}" src -m limit --limit 10/minute -j LOG --log-prefix "BLOCK src ${set_name} "
iptables -A ${blocklist_chain_name} -m set --match-set "${set_name}" dst -m limit --limit 10/minute -j LOG --log-prefix "BLOCK dst ${set_name} "
fi
iptables -A ${blocklist_chain_name} -m set --match-set "${set_name}" src,dst -j DROP
iptables -A ${blocklist_chain_name} -m set --match-set "${set_name}" src -j DROP
iptables -A ${blocklist_chain_name} -m set --match-set "${set_name}" dst -j DROP
# clean up temp files
rm "${unsorted_blocklist}" "${sorted_blocklist}" "${new_set_file}" "${headers}"