mirror of
https://github.com/bol-van/zapret2.git
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41 lines
1.4 KiB
Plaintext
41 lines
1.4 KiB
Plaintext
# this custom script runs desync to DHT packets with udp payload length >=5 , without ipset/hostlist filtering
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# NOTE: @ih requires nft 1.0.1+ and updated kernel version. it's confirmed to work on 5.15 (openwrt 23) and not work on 5.10 (openwrt 22)
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# can override in config :
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NFQWS_OPT_DESYNC_DHT="${NFQWS_OPT_DESYNC_DHT:---payload=dht --lua-desync=dht_dn}"
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# set it to "keepalive" to fool all packets, not just the first. or set number of packets to be fooled.
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NFQWS_OPT_DHT_PKT_OUT=${NFQWS_OPT_DHT_PKT_OUT:-20}
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alloc_dnum DNUM_DHT4ALL
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alloc_qnum QNUM_DHT4ALL
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zapret_custom_daemons()
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{
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# $1 - 1 - add, 0 - stop
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local opt="--qnum=$QNUM_DHT4ALL $NFQWS_OPT_DESYNC_DHT"
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do_nfqws $1 $DNUM_DHT4ALL "$opt"
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}
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zapret_custom_firewall()
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{
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# $1 - 1 - run, 0 - stop
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local f uf4 uf6
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local first_packet_only=$(ipt_first_packets $NFQWS_OPT_DHT_PKT_OUT)
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f='-p udp -m u32 --u32'
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uf4='0>>22&0x3C@4>>16=13:0xFFFF&&0>>22&0x3C@8>>16=0x6431:0x6432'
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uf6='44>>16=13:0xFFFF&&48>>16=0x6431:0x6432'
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fw_nfqws_post $1 "$f $uf4 $first_packet_only" "$f $uf6 $first_packet_only" $QNUM_DHT4ALL
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}
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zapret_custom_firewall_nft()
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{
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# stop logic is not required
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local f
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local first_packet_only=$(nft_first_packets $NFQWS_OPT_DHT_PKT_OUT)
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f="udp length ge 13 meta l4proto udp @ih,0,16 0x6431-0x6432"
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nft_fw_nfqws_post "$f $first_packet_only" "$f $first_packet_only" $QNUM_DHT4ALL
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}
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