Exchange 2013 Ports

First post, so it will be something fairly basic involving preparation for Exchange 2013 server installation.

If you plan to run Exchange 2013 and wish to have access to normal public email and/or webmail, you will need to insure that you have the correct ports open on your externally facing firewall.

Exchange 2013 uses the following ports:

Webmail:  443
SMTP:  25

Note however, that the webmail port can be changed to whatever you wish.