# 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 uf4 uf6 local first_packet_only="-m connbytes --connbytes-dir=original --connbytes-mode=packets --connbytes 1:1" local desync="-m mark ! --mark $DESYNC_MARK/$DESYNC_MARK" zapret_do_firewall_rules_ipt $1 f='-p udp -m length --length 109:407 -m u32 --u32' uf4='0>>22&0x3C@8>>16=0x6431' uf6='48>>16=0x6431' fw_nfqws_post $1 "$f $uf4 $desync $first_packet_only" "$f $uf6 $desync $first_packet_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 }