Application incomplete

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Palo Alto Networks Approved
Palo Alto Networks Approved
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Community Expert Verified

Application incomplete

L0 Member

User reported that access not working, traffic is hitting to correct rule , action is allow but application is showing incomplete and session end reason is aged-out . sent packet is 1 and received 0

Can anyone tell me what will be the resolution for this ? 

p66976_1-1650271641517.png

 

 

1 REPLY 1

L5 Sessionator

Hi @p66976 ,

 

Thank you for the excellent screen shot.  "Incomplete means that either the three-way TCP handshake did not complete OR the three-way TCP handshake did complete but there was no enough data after the handshake to identify the application."  Most of the time, this is a routing issue where the return traffic does not make it back to the firewall.  From your screen shot, you see that you are receiving no return packets.

 

https://knowledgebase.paloaltonetworks.com/KCSArticleDetail?id=kA10g000000ClibCAC

https://live.paloaltonetworks.com/t5/blogs/discussion-of-the-week-application-incomplete/ba-p/286965

 

Thanks,

 

Tom

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