zapret/init.d/sysv/custom-nfqws-dht4all

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# this custom script in addition to MODE=nfqws runs desync to DHT packets with udp payload length 101..399 , without ipset/hostlist filtering
# need to add to config : "NFQWS_OPT_DESYNC_DHT="--dpi-desync=fake --dpi-desync-any-protocol --dpi-desync-cutoff=d2 --dpi-desync-ttl=5"
QNUM2=$(($QNUM+20))
zapret_custom_daemons()
{
# stop logic is managed by procd
local MODE_OVERRIDE=nfqws
local opt
zapret_do_daemons $1
opt="--qnum=$QNUM2 $NFQWS_OPT_BASE $NFQWS_OPT_DESYNC_DHT"
do_nfqws $1 100 "$opt"
}
zapret_custom_firewall()
{
# $1 - 1 - run, 0 - stop
local MODE_OVERRIDE=nfqws
local f
local first_packet_only="-m connbytes --connbytes-dir=original --connbytes-mode=packets --connbytes 1"
local desync="-m mark ! --mark $DESYNC_MARK/$DESYNC_MARK"
zapret_do_firewall_rules_ipt $1
f="-p udp -m length --length 109:407"
fw_nfqws_post $1 "$f $desync $first_packets_only" "$f $desync $first_packets_only" $QNUM2
}
zapret_custom_firewall_nft()
{
# stop logic is not required
local MODE_OVERRIDE=nfqws
local f
local first_packet_only="ct original packets 1"
local desync="mark and $DESYNC_MARK == 0"
zapret_apply_firewall_rules_nft
f="meta length 109-407 meta l4proto udp @th,64,16 0x6431"
nft_fw_nfqws_post "$f $desync $first_packet_only" "$f $desync $first_packet_only" $QNUM2
}