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Microsoft 365 Blog
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How to quickly optimize Office 365 traffic for remote staff & reduce the load on your infrastructure

PaulCollinge's avatar
PaulCollinge
Icon for Microsoft rankMicrosoft
Mar 06, 2020
Update 02 April 2020.   A genuine thank you all for your feedback around this article. Given the enormous popularity of this subject in the current crisis, we've worked hard over the past few wee...
Updated Dec 04, 2021
Version 10.0
deployment
microsoft teams
office 365
Ian_M10's avatar
Ian_M10
Copper Contributor
Mar 11, 2020

Hi PaulCollinge, we currently have all O365 bound routed via our corporate VPN.  We also use Tenant Restrictions and must continue to use it.  We are looking to implement split tunnelling for when our users are remote working and I expect to route both the Optimize & the Allow categorised endpoints directly.  We will therefore still need to route the 3 Tenant Restrictions URLs via the VPN and out via our Proxy and will send the Default categorised endpoints also via VPN & Proxy.

 

At the same time we are looking to deploy PAC files so that when our users are in the office\within the corporate network the Optimize & Allow (minus the 3 Tenant Restriction URLs) bypass our Proxy and route direct via Firewalls.

 

My questions are:

1) Do we need a PAC file for proxy bypass to support our target remote working/spilt tunnelling solution?

2) If we do not need a PAC file, will the use of a PAC file impact our target remote working/spilt tunnelling solution?

3) If we do need a PAC file, will it need to be different from the PAC file that will be used when our users are in the office\within the corporate network?

 

Thanks in advance :-).