How to configure gre over ipsec?

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How to configure gre over ipsec?

L1 Bithead



For example, some implementations require multicast traffic to be encapsulated before IPSec encrypts it. If this is a requirement for your environment and the GRE tunnel and IPSec tunnel share the same IP address, Add GRE Encapsulation when you set up the IPSec tunnel.

How to configure gre over ipsec?




How to configure?




Accepted Solutions

L0 Member

Hi all! There is a working version of this GRE over IPSec.
According to the official manual from PaloAlto, there are 2 options for creating this bundle. In the first case, when the source and destination addresses are the same (as in my case) and the source and destination addresses are different.

Let's start setting up:
Side A:
PanOS 10.2

Side B:
RouterOS 7.6


Let's start with PaloAlto:
Create a tunnel (for example 1), add it to the default router and register the ip address on it. Next, we create IKE Crypto, IPsec Crypto with the settings that you need.
Create IKE Gateways (I use IKEv2 only mode), then specify Local IP Address and Peer Address, specify PSK, specify Local Identification and Peer Identification also do not forget to specify IKE Crypto Profile on the Advanced Options tab:

Next, we proceed to configuring IPsec Tunnels:
Select the previously created tunnel 1
Select the previously created IKE Gateway
Select Show Advanced Options and select Add GRE Encapsulation
Go to the Proxy IDs tab and add the IP addresses of our external interfaces:
Local Remote

Don't forget to specify routes:
Virtual Router -> Static Routes:
add ->
Interface tunnel 1
Next Hop IP Address



Moving on to Mikrotik:
Interfaces -> GRE Tunnel
Creating a GRE tunnel
Specify Local Address
Specify Remote Address
Next, add the IP address to the interface:
IP -> Addresses
Moving on to creating IPsec:
IP-> IPSec

Creating a Profile
We specify the data we need

Creating Identites:
Specify the PSK
My ID Type Auto
Remote ID Type Auto

Creating Peers:
Specify Address: (IP Address of party A)
Local Address:
Specify IKE profile
Exchange Mode IKE2

Creating a Proposal:
We specify the data we need

Creating Policies:
Specifying Peer
Select Tunnel
Protocol 255(all)
On the Action tab, do not forget to specify the Proposal.
We specify the routes to the network we need (in my case it is so that there is Internet access in the office via PaloAlto)
Within the current example

View solution in original post


L0 Member


Pleased to see your issue as I think I have the same problem, I am also confused and in need of light on this same issue. Need help tellthebell.

Community Team Member

In that same document but in the next section is a whole area on configuring GRE:


LIVEcommunity team member
Stay Secure,
Don't forget to Like items if a post is helpful to you!

Hello Jdelio


This is configure GRE tunnel ,but I need configure gre over ipsec.

L0 Member

Should the GRE interface be on the PA side or will it be sufficient on the other side, for example on the Mikrotik or Cisco side?

Has anyone configured GRE over IPSEC between PA and Mikrotik? Please share an example of a working configuration.

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