Vulnerability in TCP packet

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Vulnerability in TCP packet

L1 Bithead

Hi guys ,

Is it possible for PAN to block asynchronous tcp and RST packets to prevent attack ?




L5 Sessionator


Have you try with Security profile configured on security rule ?


L6 Presenter

Hi...By asynchronous, I assume you mean TCP packets that do not follow the TCP 3-way handshake.  The default behavior of the PA is to perform stateful inspection and will drop packets that did not conform to the 3-way TCP handshake.  Here's how to enable/disable this feature: How to Set the Firewall to Reject non-Syn First Packet?


L5 Sessionator

PANFW can act upon malicious TCP packets ( used for port scans and  reconnaisance ) using the zone protection profile as shown below.

zone protection-2.JPG.jpg

zone protection-1.JPG.jpg

As I understand the zone protection is for incoming traffic.

That is if you want to protect DMZ then you should apply your zone-protection on the Untrust zone (facing Internet) and the Trust zone (facing your LAN - if you wish to protect from inside threats aswell (for example an overtaken client is being used to DDoS/DoS your DMZ devices)).

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