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Mar 26

Disabling HTTP in OWAS/WAC

tumblr_inline_mm0uxpnKvq1qz4rgpWe built our OWAS farms and, like most Lync people, had no clue what we were doing. But they ended up working anyway so hooray for us.

Now that we are begrudgingly learning a little about it we have learned that we should disable HTTP on the pools and run with HTTPS only.

So we tried the obvious command to disable HTTP:

Set-OfficeWebAppsFarm -AllowHTTP $False

That gives this wonderful error:

Set-OfficeWebAppsFarm : A positional parameter cannot be found that accepts argument ‘False’.
At line:1 char:1
+ Set-OfficeWebAppsFarm -AllowHTTP $False
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo          : InvalidArgument: (:) [Set-OfficeWebAppsFarm], ParameterBindingException
+ FullyQualifiedErrorId : PositionalParameterNotFound,Microsoft.Office.Web.Apps.Administration.SetFarmCommand

After asking around, we found that the secret to this command is to use a colon (:) instead of a space ( ) between the parameter and the value. As such, this is the proper syntax:

Set-OfficeWebAppsFarm -AllowHTTP:$False

Note that if you have the SSLOffloaded parameter set to True that you cannot disable AllowHTTP. If you try, you get this error:

WARNING: When offloading SSL, AllowHttp is automatically enabled.

To work around this, run the following command to set both to false.

Set-OfficeWebAppsFarm -SSLOffloaded:$False -AllowHTTP:$False

For more detail and tips on how to secure your Office Web Apps, see this blog.

2 pings

  1. NeWay Technologies – Weekly Newsletter #88 – March 27, 2014 | NeWay

    […] Disabling HTTP in OWAS/WAC – […]

  2. NeWay Technologies – Weekly Newsletter #88 – March 28, 2014 | NeWay

    […] Disabling HTTP in OWAS/WAC – […]

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