![]() Local interface will be in the ‘inside’ interface on the Fortigate > Enter the local subnet(s) > Enter the remote (behind the ASA) subnet(s) > Next. Give it the ‘public’ IP of the Cisco ASA > Set the port to the ‘outside’ port on the Fortigate > Enter a pre-shared key, (text string, you will need to enter this on the Cisco ASA as well, so paste it into Notepad or something for later) > Next. Here’s a pretty picture of what it will look like Īnd here’s what my test bench topology looks like in EVE-NG.Ĭonfiguring the Fortigate for Site to Site VPNĪfter saying don’t use the wizard, I’m going to use the wizard to do the Fortigate end, then I’ll edit the tunnel it creates and make it a bit more ‘fit for purpose’.įrom the web management portal > VPN > IPSec Wizard > Give the tunnel a name > Change the remote device type to Cisco > Next. I digress, so here’s how to set up a site to site VPN using IKEv2 with some weapons grade encryption. Who are these people? Do they expect Tom Cruise to come rappelling out of a skylight to steal the details of their 2016 Christmas golf event! ‘ Can you change it from AES128 to AES256 and change the hash to SHA512‘, or ‘Do you not support elliptical curve’. However I’ve found ‘ Many Times‘ I’ve been trying to put a VPN into third party and it’s like a game of ‘ Encryption Bingo‘ e.g. What do you mean shoddy? Well, Cisco and Fortinet are both guilty of enabling ‘Everything’ to make the tunnel come up, so people can just use a wizard and not put to much thought into the process, for most people thats absolutely fine. ![]() ![]() Back then I said that the default settings were a bit ‘ shoddy‘ and that I’d revisit it once I had more time. A while ago I did a run through on site to site VPNs from Cisco ASA to Fortigate firewalls.
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