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54 lines
1.9 KiB
54 lines
1.9 KiB
![]()
8 years ago
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#!/bin/bash
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sudo modprobe xt_ts3init
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#create an autorized ts3 client ip set.
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#perhaps create the set with more than the default 1024 entries
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sudo ipset create ts3_authorized hash:ip timeout 30 || { echo "ipset not installed or there is a problem with it"; exit -1; }
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#create new chain that handles ts3
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sudo iptables -N TS3_UDP_TRAFFIC
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sudo iptables -N TS3_TCP_TRAFFIC
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sudo iptables -N TS3_ACCEPT_NEW
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sudo iptables -N TS3_UPDATE_AUTHORIZED
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RANDOM_FILE_NAME=random.data
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if [ ! -f "${RANDOM_FILE_NAME}" ]
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then
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xxd -l 60 -c 60 -p /dev/urandom > "${RANDOM_FILE_NAME}" || { echo "could not use xxd to create random data"; exit -1; }
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fi
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RANDOM_FILE=`pwd`/${RANDOM_FILE_NAME}
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#disable connection tracking for ts3 server
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sudo iptables -t raw -A PREROUTING -p udp --dport 9987 -j CT --notrack
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#move ts3 traffic to TS3_TRAFFIC chain, and filetransfer to TCP chain
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sudo iptables -A INPUT -p udp --dport 9987 -j TS3_UDP_TRAFFIC
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sudo iptables -A INPUT -p tcp --dport 30033 -j TS3_TCP_TRAFFIC
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#Allow authorized clients on UDP
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sudo iptables -A TS3_UDP_TRAFFIC -m set --match-set ts3_authorized src -j TS3_UPDATE_AUTHORIZED
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#Allow 3.0.19 and up clients
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sudo iptables -A TS3_UDP_TRAFFIC -p udp -m ts3init_get_cookie --min-client 1459504131 -j TS3INIT_SET_COOKIE --seed-file ${RANDOM_FILE}
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#add new connection if cookie is valid
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sudo iptables -A TS3_UDP_TRAFFIC -p udp -m ts3init_get_puzzle --check-cookie --seed-file ${RANDOM_FILE} -j TS3_ACCEPT_NEW
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#drop the rest
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sudo iptables -A TS3_UDP_TRAFFIC -j DROP
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#add new connection to authorized src
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sudo iptables -A TS3_ACCEPT_NEW -j SET --add-set ts3_authorized src
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sudo iptables -A TS3_ACCEPT_NEW -p udp -j TS3INIT_RESET
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#Allow authorized clients on TCP
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sudo iptables -A TS3_TCP_TRAFFIC -m set --match-set ts3_authorized src -j ACCEPT
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sudo iptables -A TS3_TCP_TRAFFIC -j DROP
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#update timeout in set and allow traffic
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sudo iptables -A TS3_UPDATE_AUTHORIZED -j SET --add-set ts3_authorized src --exist
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sudo iptables -A TS3_UPDATE_AUTHORIZED -j ACCEPT
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