Protection of Teams media traffic through VPN split tunneling
It is becoming increasingly important for Microsoft Teams administrators to ensure the security and efficiency of data transfer in the Split VPN routing. This task requires not only a deep understanding of how audio and video calls work in Tims, but also taking appropriate measures to protect connections.
Detailed analysis of media traffic processing processes in Microsoft Teams
Let's take a closer look at each of the processes characteristic of processing media traffic in Microsoft Teams in order to more thoroughly understand the organization of protection and the efficiency of data transfer:
- Configuring IP optimization subnets. This is the first step to ensure proper routing of Tims media traffic. Properly specified IP optimization subnets in the routing table allow Teams to determine the local interface to send data to a specific destination on the Microsoft network.
- Using the GetBestRoute function. Teams uses this feature to determine the best route to your destination. With the correct route configuration, the local interface will be selected for IP addresses corresponding to Microsoft, which ensures efficient transmission of media traffic.
- Using SRTP. Media data in Tims is protected using SRTP (Secure Real Time Transport Protocol), which guarantees privacy and authentication of data, and also protects against pseudo-replay attacks.
- Transfer of session keys over a secure TLS channel. Session keys, used to encrypt media traffic, are exchanged between the client and server over an encrypted TLS connection. This guarantees the security of key exchange and protects data from unauthorized access.
- Checking the connection. Helps test trace routes and various connection parameters. In addition, this functionality contains VPN tests for additional analysis.
- Tracking the route to the final point. Using the trace command in PowerShell allows you to verify that Teams media traffic is routed through your local ISP and allowed within IP ranges configured for split tunneling.
- Network capture using Wireshark. Network capture using tools such as Wireshark allows you to check whether media traffic is reaching IP addresses in Tims ranges configured for split tunneling, which helps ensure that your VPN settings are correct.
Guaranteeing the security and efficiency of Teams media traffic processing in a VPN split tunnel requires not only careful configuration, but also systematic testing. Properly configured settings and encryption mechanisms will ensure reliable data protection in the presented environment.
Additional measures to protect media data in Tims
To more fully protect connections in Tims via VPN split tunneling, it is also necessary to take auxiliary measures:
- Updating the client. Make sure users have installed Tims client version 1.3.00.13565 or higher, which has improvements to more effectively discover available network routes.
- Configuring firewall rules. If media traffic still does not split into tunnels, despite the correct routing settings, create firewall rules to prevent certain IP subnets and Tims ports from passing through VPN. This will help direct media traffic directly through the local network, bypassing the VPN tunnel.
- Setting up alternative tunneling in Edge. If you are using Microsoft Edge for the Tims web client, ensure that VPN split tunneling is configured correctly by disabling the configuration setting in the Edge browser that controls how WebRTC (Web Real-Time Communication) uses the operating system routing tables.
Private VPN server: a significant contribution to traffic protection
A private VPN server, when used correctly, significantly improves the protection of Teams media traffic through split VPN tunneling, thanks to control and configuration of routing, flexibility in setting firewall rules, reducing dependence on public VPNs, optimizing performance, etc.
Buy a private VPN server is most profitable on Private VPN server. On this resource you will also find a wide range of information about VPN, as well as answers to frequently asked questions about private VPN servers in the FAQ, making the site a valuable source of knowledge for anyone interested in this topic.