2024-10-28 11:32:24 +05:00
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For window size changing :
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iptables -t mangle -I PREROUTING -p tcp --sport 80 --tcp-flags SYN,ACK SYN,ACK -j NFQUEUE --queue-num 200 --queue-bypass
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iptables -t mangle -I PREROUTING -p tcp --sport 80 --tcp-flags SYN,ACK SYN,ACK -m set --match-set zapret src -j NFQUEUE --queue-num 200 --queue-bypass
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For dpi desync attack :
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iptables -t mangle -I POSTROUTING -p tcp -m multiport --dports 80,443 -m connbytes --connbytes-dir=original --connbytes-mode=packets --connbytes 1:6 -m mark ! --mark 0x40000000/0x40000000 -j NFQUEUE --queue-num 200 --queue-bypass
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iptables -t mangle -I POSTROUTING -p tcp --dport 443 -m mark ! --mark 0x40000000/0x40000000 -j NFQUEUE --queue-num 200 --queue-bypass
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iptables -t mangle -I POSTROUTING -p udp --dport 443 -m mark ! --mark 0x40000000/0x40000000 -j NFQUEUE --queue-num 200 --queue-bypass
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# auto hostlist with avoiding wrong ACK numbers in RST,ACK packets sent by russian DPI
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sysctl net.netfilter.nf_conntrack_tcp_be_liberal=1
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iptables -t mangle -I POSTROUTING -p tcp -m multiport --dports 80,443 -m connbytes --connbytes-dir=original --connbytes-mode=packets --connbytes 1:12 -m mark ! --mark 0x40000000/0x40000000 -j NFQUEUE --queue-num 200 --queue-bypass
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2024-11-19 19:31:19 +05:00
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iptables -t mangle -I PREROUTING -p tcp -m multiport --sports 80,443 -m connbytes --connbytes-dir=reply --connbytes-mode=packets --connbytes 1:3 -m mark ! --mark 0x40000000/0x40000000 -j NFQUEUE --queue-num 200 --queue-bypass
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2024-10-28 11:32:24 +05:00
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For TPROXY :
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sysctl -w net.ipv4.ip_forward=1
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iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
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ip -f inet rule add fwmark 1 lookup 100
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ip -f inet route add local default dev lo table 100
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# prevent loop
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iptables -t filter -I INPUT -p tcp --dport 988 -j REJECT
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iptables -t mangle -A PREROUTING -i eth1 -p tcp --dport 80 -j MARK --set-mark 1
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iptables -t mangle -A PREROUTING -i eth1 -p tcp --dport 80 -j TPROXY --tproxy-mark 0x1/0x1 --on-port 988
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iptables -t mangle -A PREROUTING -i eth1 -p tcp --dport 80 -m set --match-set zapret dst -j MARK --set-mark 1
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iptables -t mangle -A PREROUTING -i eth1 -p tcp --dport 80 -m mark --mark 0x1/0x1 -j TPROXY --tproxy-mark 0x1/0x1 --on-port 988
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For DNAT :
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# run tpws as user "tpws". its required to avoid loops.
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sysctl -w net.ipv4.conf.eth1.route_localnet=1
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iptables -t nat -I PREROUTING -p tcp --dport 80 -j DNAT --to 127.0.0.127:988
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iptables -t nat -I OUTPUT -p tcp --dport 80 -m owner ! --uid-owner tpws -j DNAT --to 127.0.0.127:988
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Reset all iptable rules :
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iptables -F
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iptables -X
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iptables -t nat -F
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iptables -t nat -X
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iptables -t mangle -F
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iptables -t mangle -X
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iptables -t raw -F
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iptables -t raw -X
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Reset iptable policies :
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iptables -P INPUT ACCEPT
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iptables -P FORWARD ACCEPT
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iptables -P OUTPUT ACCEPT
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iptables -t mangle -P POSTROUTING ACCEPT
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iptables -t mangle -P PREROUTING ACCEPT
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iptables -t mangle -P INPUT ACCEPT
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iptables -t mangle -P FORWARD ACCEPT
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iptables -t mangle -P OUTPUT ACCEPT
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iptables -t raw -P PREROUTING ACCEPT
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iptables -t raw -P OUTPUT ACCEPT
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