2023-10-12 09:35:06 +00:00
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nftables test cheat sheet
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simplified rules to test nfqws and tpws
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For DNAT :
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# run tpws as user "tpws". its required to avoid loops.
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nft delete table inet ztest
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nft create table inet ztest
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nft add chain inet ztest pre "{type nat hook prerouting priority dstnat;}"
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nft add rule inet ztest pre tcp dport "{80,443}" redirect to :988
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nft add chain inet ztest out "{type nat hook output priority -100;}"
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nft add rule inet ztest out tcp dport "{80,443}" skuid != tpws redirect to :988
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For dpi desync attack :
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nft delete table inet ztest
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nft create table inet ztest
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nft add chain inet ztest post "{type filter hook postrouting priority mangle;}"
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2024-10-12 18:55:18 +00:00
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nft add rule inet ztest post meta mark and 0x40000000 == 0 tcp dport "{80,443}" ct original packets 1-12 queue num 200 bypass
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nft add rule inet ztest post meta mark and 0x40000000 == 0 udp dport 443 ct original packets 1-4 queue num 200 bypass
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2023-10-26 12:12:32 +00:00
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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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nft add chain inet ztest pre "{type filter hook prerouting priority filter;}"
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nft add rule inet ztest pre tcp sport "{80,443}" ct reply packets 1-4 queue num 200 bypass
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2023-10-12 09:35:06 +00:00
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show rules : nft list table inet ztest
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delete table : nft delete table inet ztest
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