Cisco VPN traffic

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Cisco VPN traffic

L4 Transporter

If a vpn tunnel has been successfully established from a cisco device and passing through the PA firewall, is it possible for the PA to still drop the traffic destined for the established tunnel?

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L4 Transporter

It appears that there was a open session that never ended. I went into session browser, manually ended the session, a new session started and it began to pass traffic

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Cyber Elite
Cyber Elite

I think the answer there is 'it depends'.

 

I'm my scenario, I have a different zone for the other side of the VPN tunnel so if there is no security policy, then yes it will get dropped.

L4 Transporter

@jdprovine   The traffic on PA would be seen as either ESP or ESP-UDP, can you check in the traffic logs on the PA if this traffic is seen ? To ensure you have PA as passthrough allow application "IPSEC" as suggested in below DOC :

https://live.paloaltonetworks.com/t5/Configuration-Articles/Configuring-the-Palo-Alto-Networks-Devic...

Thanks I will check it out

L4 Transporter

It appears that there was a open session that never ended. I went into session browser, manually ended the session, a new session started and it began to pass traffic

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