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Topic: GRE over IPSEC (Read 3442 times)
pongafence
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Posts: 29
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GRE over IPSEC
«
on:
May 01, 2018, 12:44:05 pm »
Hey all,
So firstly, yes I did quickly try to search both the documentation and the forums for some quick answers, but was left still wanting.
So at the moment, I'm connecting a few sites together using IPSEC tunnels. They're working fine. However, there is a new requirement now, now that they're up. To use a dynamic routing protocol over the tunnel.
I know that from the current IPSEC tunnel it's not possible. But I know that with a GRE tunnel I can.
However, configuring this in OPNsense isn't very clear cut, or maybe it's that easy I'm over complicating it.
I'm able to establish the GRE tunnel. But how do I encrypt it?
The reason for this, is because I can't seem to use the OpenVPN option due to configuration limitations on the other end, Mikrotik router and Cisco router.
Anyway, how do I wrap it up? Do I specify the IP addresses of the GRE tunnel? Or do I specify the external IP's of each device in the IPSEC tunnels to wrap up the GRE tunnel?
Directions would be greatly appreciated.
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