Which IP address should I use for IPSec tunnel monitoring

[yhlee1]

Hello,

I made an IPSec Tunnel with Fortinet device, and it has some issue.

So I want to set tunnel monitoring for the tunnel, but I'm confused about the destination IP.

I set my tunnel interface ip(192.168.88.1/24), but at fortigate, it's not set.

I got one IP addr of remote end(I guess it's loopback of forti device)

Can I use that IP as destination IP? The routing is done at peer device.

Both devices don't have proxy ID.

Do I need more configuration? Or is it okay to use the IP addr I got?

[OtakarKlier · Accepted solution]

Hello,

The monitoring is a ping that gets sent from the PAN to the remote side to see if the tunnel is up. As long as the far end loopback is pingable from the PAN, it's ok to use it.

https://knowledgebase.paloaltonetworks.com/KCSArticleDetail?id=kA10g000000CloYCAS

Hope that helps.

[yhlee1]

Hello,

Thanks for your answer, it's helpful.