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- # accept any TCP ACK, RST, PSH or FIN those are fine to accept automatically
- -A ufw-before-input -p tcp --tcp-flags ACK ACK -j ACCEPT
- -A ufw-before-input -p tcp --tcp-flags FIN FIN -j ACCEPT
- -A ufw-before-input -p tcp --tcp-flags PSH PSH -j ACCEPT
- -A ufw-before-input -p tcp --tcp-flags RST RST -j ACCEPT
- # anything outgoing is fine
- -A ufw-before-output -j ACCEPT
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