I am a new Palo Alto firewalls learner, I start the lab which has 2 PA-VMs direct connected (in the purpose of testing VPN site to site) but it can't ping to each other it showing destination unreachable. I had tried to configure Interface management by allowed ping on both PAs but it's still not working, please help!!
On the CLI, the ping command defaults to being sourced via the management interface. Can you try your test again but source it from the outside interface IP:
eg for PA-VM-01:
ping source <PA-VM-01-outside_IP> host <PA-VM-02-outside_IP>
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