How do I select global no auth source for IPsec?

[senseivita]

Following the setup guide of the documentation it says to select no backend for the authentication. The problem is it won't let you do that:



If you leave the page whatever you saved in there is lost so the tunnel will get no network infrastructure info which  is all in there, DNS servers, domain name, addresses for the client...

Should leave the authentication source blank in the phase instead?

Thanks!