

In our experience, the single most significant cause of dropped RDS connections over VPN tunnels is TCP timeout settings that are too low. Many of the settings will also apply to connections using the software SonicWALL Global VPN Client (GVPNC), particularly PMTU, since this can vary between different client Internet connections.
#Sonicwall global vpn how to#
The sections below describe how to achieve the best RDS performance over SonicWALL site-to-site VPN tunnels. This reconnection process can take anywhere between a few tens of seconds and a minute or more and is very disruptive for the end user.

A momentary drop in connection can cause the RDS client to disconnect, freezing the screen for the end user until the RDS client automatically attempts to reconnect. RDP is a streaming protocol and is very sensitive to interruption in the connection. This article focuses on the latter, and specifically on providing such Remote Desktop Protocol (RDP) services via a site-to-site VPN tunnel using SonicWALL firewalls at each end because we experienced some issues with intermittent, recurring dropped connections.Ī web search showed that (a) we were far from the only ones and (b) no single website had provided a comprehensive solution. Here at Cantarus, our multi-purpose KalaniCloud hosting is used for a variety of different hosting requirements, from websites and backup data to email and Windows Remote Desktop Services (RDS), formerly Terminal Services (TS).
