Friday 7 August 2020

troubleshoot S2S VPN on palo alto firewall

Do the usual checking settings match on both end.

Make sure you have an ACL to allow the traffic

Is there any NAT that needs to happen ?


Palo VPN commands

Check P1

show vpn ike-sa
show vpn ike-sa gateway EXIGENT-210

Check P2

show vpn ipsec-sa 
show vpn ipsec-sa tunnel EXIGENT:ProxyID1


Check encaps/decaps
show vpn flow name EXIGENT:ProxyID1


If you need to take it further you can run debugs

https://knowledgebase.paloaltonetworks.com/KCSArticleDetail?id=kA10g000000ClivCAC

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