Hi,
This week we are working on a Security Firewall migration project and suddenly we noticed that some of the VPNs are configured in Aggressive mode with a pre-shared key on the old existing firewall. The Client was not supposed to migrate on IKEv2 or Main mode but after an hour discussion with the concerned person, we got a green signal to go with the main mode. We were shown many documents, articles and finally a GNS3 lab that why are we (Sophos) not supporting Aggressive mode with PSK.
Read more on the Blog post: http://www.routexp.com/2019/04/why-sophos-is-not-supporting-ikev1.html
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