11618 - TCP/IP SYN+FIN Packet Filtering Weakness resolution

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11618 - TCP/IP SYN+FIN Packet Filtering Weakness resolution

L2 Linker

VA scan flag out the below for GP Portal URL


11618 - TCP/IP SYN+FIN Packet Filtering Weakness
It may be possible to bypass firewall rules.

The remote host does not discard TCP SYN packets that have the FIN flag set.

Depending on the kind of firewall you are using, an attacker may use this flaw to bypass its rules.


See Also


Please advise how to resolved this issue.


L1 Bithead

I have the same alert, can you tell me if the alert could be resolved?

L2 Linker

Is there any update to this? We are seeing this in our scans also.

Thank you,


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