Split tunnel but I see that packets from Teams calls are being sent over the VPN connection

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Split tunnel but I see that packets from Teams calls are being sent over the VPN connection

L1 Bithead

We have a GP split tunnel setup, MS Teams calls should not go over VPN, but I see that packets from Teams calls are being sent over the VPN connection. what's your recommendation to provide an alternate path that bypasses the VPN for Teams traffic?

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L4 Transporter

Hello @Tthapa 

There are programs which simply try every available interface. You need to ensure that the direct way is perceived as "better".

If you grant direct access to  MS-Teams destination IPs (13.107.64.0/18, 52.112.0.0/14, 52.120.0.0/14) and allow only http(s) via the vpn tunnel to MS-Teams (do not permit 3478...3481 UDP via VPN), then chances are very high that the packets will go the split tunnel path.

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2 REPLIES 2

L4 Transporter

Hello @Tthapa 

There are programs which simply try every available interface. You need to ensure that the direct way is perceived as "better".

If you grant direct access to  MS-Teams destination IPs (13.107.64.0/18, 52.112.0.0/14, 52.120.0.0/14) and allow only http(s) via the vpn tunnel to MS-Teams (do not permit 3478...3481 UDP via VPN), then chances are very high that the packets will go the split tunnel path.

@JoergSchuetter - Thank you so much for the advice. I will check my config.

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