How to Configure IPSec VPN Tunnel when a peer is behind a router without a static public IP
Environment
PaloAlto Next-Gen Firewall
IPSec VPN Tunnel
Topology
PA1 ----- Router ----- PA2
Public IP of PA1 : 10.50.50.50
Public IP of Router : Dynamic IP
Internal IP of Router : 10.20.20.1
Private IP of PA2 : 10.20.20.20
PA2 Private IP is natted by Rout
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