In one of the last articles I already described how the Reverse authentication of the Sophos UTM can be set up. Reverse authentication places a separate login page in front of the Exchange server (similar to Forefront TMG).
Unfortunately, the design of the login page of the UTM is not particularly pretty, in my opinion, and does not really match the Exchange design. However, it is possible to configure your own login templates to customize the layout and design. It is therefore possible to recreate the Exchange login page. All you need is an appropriate login template. I found a template for Exchange 2013 in the Sophos Community and adapted it a little for Exchange 2016.
Comparison of login templates
The standard login screen of the UTM looks something like this:
After the Exchange login template has been imported, the login screen of the UTM looks as follows:
This is not quite identical to the Exchange login, but at least it is very close. Here is the original Exchange login for comparison:
Durch das Template für die Sophos UTM wird allerdings die Login Seite eingeschränkt. Das Template stellt nur Login Maske in deutscher Sprache zur Verfügung, eine automatische Sprachanpassung erfolgt in diesem Fall nicht. Die Funktion wird dadurch zwar nicht eingeschränkt, für Benutzer aus anderen Ländern ist es allerdings etwas „unschön“.
Configuration Sophos UTM Exchange Template
The template for reverse authentication can be downloaded here:
If the Reverse Authentication is already configured, a new template can now be created:
Im Feld „Filename“ wird die Datei „login.htm“ aus dem ZIP-Archiv hochgeladen. Die restlichen Dateien aus dem Archiv, werden im Bereich „Images / Stylesheets“ hochgeladen.
Once the new template has been created, it only needs to be selected in the Authentication Profile:
No adjustments to the template are necessary unless you want to customize it further.