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1. #Dell sonicwall global vpn client how to#
2. #Dell sonicwall global vpn client software#
3. #Dell sonicwall global vpn client windows#

For Route-based VPN tunnels: Edit the custom route for the VPN tunnel, and uncheck the Auto-add Access Rules checkbox in the Advanced tab.Note that if other traffic types are traversing the VPN tunnel, you will need to manually create rules for those, as well as the new RDS-specific rule. For Policy-based VPN tunnels: Edit the VPN tunnel, navigate to the Advanced tab and check the Suppress automatic Access Rules creation for VPN Policy checkbox.

To address this, we recommend making your own custom firewall rules and preventing the automatic creation of rules (which is more secure as not all services must be opened) which is achieved as follows: However, it is essential to do this only for access rules covering just RDS traffic as otherwise, the timeout for all traffic is changed which can result in excessive numbers of inactive connections accumulating on the firewall and consuming resources.Ī common issue with implementing the above VPN tunnel firewall rules is that SonicWALL, by default, automatically create the access rules associated with the VPN tunnels, and these auto-generated rules cover all traffic types between the endpoints. Based on experience, we'd recommend this is changed to at least 120 minutes.Ĭhanging the TCP Connection Inactivity Timeout value is straightforward simply edit the appropriate firewall rule, navigate to the User & TCP/UDP (or Advanced for pre-version 7 firmware) tab and change the setting there. Although one might consider that an active RDS session should not be regarded as inactive by SonicWALL, in practice, this value can indeed cause the RDS connections to be dropped. When creating a firewall rule in SonicWALL firewalls, the TCP Connection Inactivity Timeout is set to 15 minutes by default. In our experience, the single most significant cause of dropped RDS connections over VPN tunnels is TCP timeout settings that are too low.

#Dell sonicwall global vpn client software#

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.

#Dell sonicwall global vpn client 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.

#Dell sonicwall global vpn client windows#

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).