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70 lines
2.3 KiB
70 lines
2.3 KiB
#!/bin/bash |
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sudo modprobe xt_ts3init |
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if [ "$1" == "4" ] |
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then |
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IPTABLES=iptables |
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IPFAMILY=inet |
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FRAGMENT_FLAG="! -f " |
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elif [ "$1" == "6" ] |
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then |
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IPTABLES=ip6tables |
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IPFAMILY=inet6 |
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FRAGMENT_FLAG="" |
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else |
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echo "specify either 4 or 6 as a parameter for ipv4 or ipv6"; |
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exit -1 |
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fi |
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#create an autorized ts3 client ip set. |
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#perhaps create the set with more than the default 1024 entries |
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sudo ipset create ts3_authorized${1} hash:ip family ${IPFAMILY} 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 (do not allow fragments) |
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sudo ${IPTABLES} -A INPUT -p udp --dport 9987 ${FRAGMENT_FLAG} -j TS3_UDP_TRAFFIC |
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#move filetransfer to TCP chain |
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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 ${IPTABLES} -A TS3_UDP_TRAFFIC -m set --match-set ts3_authorized${1} 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 --random-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 --random-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 ${IPTABLES} -A TS3_ACCEPT_NEW -j SET --add-set ts3_authorized${1} src |
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sudo ${IPTABLES} -A TS3_ACCEPT_NEW -p udp -j TS3INIT_GET_COOKIE |
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#Allow authorized clients on TCP |
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sudo ${IPTABLES} -A TS3_TCP_TRAFFIC -m set --match-set ts3_authorized${1} 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 ${IPTABLES} -A TS3_UPDATE_AUTHORIZED -j SET --add-set ts3_authorized${1} src --exist |
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sudo ${IPTABLES} -A TS3_UPDATE_AUTHORIZED -j ACCEPT |
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