Hello Ahti Akel,
PAN-OS 3.1 does not provide GRE termination support. We do support IPSec but NAT traversal is not currently supported.
Yes, this is doable.Configure a static NAT for the VPN terminator in the DMZ. For NAT configuration example, refer to the document
Dynamic NAT i.e translation of IP address and port number is not supported for IPSec and GRE traffic passing through a PA firewall.
Couple of configuration workarounds
-1) Enable on NAT-T on the IPSec endpoints.
-2) If the IPSec /GRE end points have a public IP addresses, you can create a NAT rule with action no-NAT for the IPSec/GRE. This will bypass NAT for IPSec
if NAT is still required for IPSec and GRE, we do support static NAT or dynamic IP i.e only IP translation and not port numbers.
Hope this helps
Hello Tomoyuki Komure,
We are currently investigating NAT traversal support for a future release. We can't say at this time when it will be supported.
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