Exchange 2007 to Exchange 2013 migration /w no TMG


I am currently in the midst of performing a migration from Exchange 2007 SP3 to Exchange 2010.

I am following the guides of and

Both of these instructions refer to a TMG gateway which our environment doesnt have.. All we have is a meraki point to the internal IP address of the Exchange server.

It talks about applying a new SSL cert to the 2013 server and 2007.

Can someone shed some light on what my steps should be in my scenario to migrate full off the 2007 server to 2013?
Alberto Alvarez JrAsked:
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Gareth GudgerConnect With a Mentor Commented:
TMG is just a firewall and proxy. When you reach those sections just retool the instructions for your own firewall.

Was there any step in particular you were unsure of?

When it comes to the firewall you basically just need a public IP pointing to the internal IP of your 2013 server. And allow ports 80/443/25 through.

But I am making generalizations because I don't know how you have built your network.
Konstantin TeremkovCommented:
Agree withGareth Gudger. There is no fundamental difference what kind of firewall you use, just have to be satisfied by opening ports for Exchange 2010. Another addition to the instructions: IPV6 must be enabled in the configuration of the server on which you are upgrading Exchange otherwise, an error may occur during the upgrade.
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