Alternative Way for IPsec Tunnel in Palo Alto 850

[soorajpmenon5]

Hello Team,

As I am studying Palo Alto and am a newbie, I have created a lab setup where I use BGP peering between a PA 850 and ISPs. The PA's IP, used for BGP peering, is also used for the IPsec tunnel. I discovered a vulnerability where an ISP outage results in no IP connectivity between the IPsec local and remote IPs, causing both Phase 1 and Phase 2 of the tunnel to go down. This setup is dependent on the ISPs.

Is it possible to:

1. Set up two IPsec tunnels from both ISPs in an IPsec active/standby configuration???
2. Is there any other easier way to accomplish the requirement?
   FYI: No additional public IP interface on the PA.

I appreciate your response in advance!

Screenshot of design attached!!

Thanks,

Punk!

[soorajpmenon5]

Design!

[reaper · Accepted solution]

In this scenario your IP connectivity depends on BGP to move your IP addresses around when there is an ISP outage.

Do you also have 'local' IP addresses provided by the ISP? This would allow you to set up 2 ipsec tunnels using the 'normal' (non BGP) public addresses so your tunnels do not depend on the BGP IP being moved around (as that will always lead to a tunnel outage)

[soorajpmenon5]

Hello Reaper,

No more IPs. Thanks for the suggestion. Anyway it would be good to add a public interface(my public) on both sites and do the tunneling through that right. This way, there won't be any ISP dependency, and I'll have the redundancy of dual ISPs!

Thanks,

Punk