Hello experts,

Please does anybody have a reference guidance on publishing HSNC externally with TMG?

R,

Hi,

Based on your description, my understanding is that you want to publish hostname site collection to external with TMG.

Here is article about configure Forefront TMG for a SharePoint environment,you can use as a reference:

https://technet.microsoft.com/en-us/library/dn197170.aspx

Besides, here is a similar post, you can take a look at:

https://social.technet.microsoft.com/Forums/en-US/90958069-f99b-4de3-8c5b-576a888f4acc/publishing-sharepoint-2013-host-name-site-collections

Best Regards,

Lisa Chen

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