feat: support tcp state inspection at wan side#5
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w180112
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Apr 28, 2026
w180112
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- Add support to inspect TCP packet state from WAN side
- Per-state allowlist:
- SYN_SENT → SYN-ACK, RST
- SYN_RECV → SYN-ACK (retransmit), ACK, FIN (resp), RST
- ESTABLISHED, FIN_WAIT → ACK, FIN (resp), RST
- CLOSE_WAIT, LAST_ACK, TIME_WAIT → ACK, RST
- NONE, CLOSE, INVLD → nothing (drop all)
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