![]() ![]() The one thing that may be causing issues is my main network having two Default Gateways. All my networks are seperated by switches. Making this mistake can cause issues which usually are associated with IP spoof entries in the log referencing the Global VPN Client virtual IPs.Good Information. Key things to check for on the NSA 3500 side:ġ) the VPN Access permissions set up on the User or Group level inside NSA 3500 should be network objects like LAN1 and LAN5 - if other objects are listed or inherited, they can cause problems.Ģ) make sure that networks connected to different firewall interfaces are not attached to the same switch w/out proper VLAN separation. The VPN clients do not get assigned this gateway and all of our servers go out through the SonicWall not the other gateway. Keeps the internet traffic down on our main pipe. This is used to send some DHCP-staticly assigned addresses on our network out this gateway for internet access only - they have complete access to all other LAN's internally. Another note is we do have another gateway sitting off of LAN-1. I do not see anything in the SoinicWall log that would explain this. Other times there is no connectivity to LAN-1 (even though they did get DHCP from here), but in any of these situations they can always access LAN-5. Also when they initially connect sometimes they will work for a few minutes then get dropped from LAN-1 but still can access LAN-5. Sometimes (not all the time and random) some users will only be able to connect to LAN-5 and not LAN-1 where all our domain servers are located including the DHCP that assigns them an IP Address. Currently there are two LANs they can connect to: LAN-1 and LAN-5 over the VPN. The last of couple months there have been connectivity problems with people over the VPN connecting to our main LAN. … Should now show IPv4Enabled False, and IPv6Enabled False, for your network adapterħ) Re-test your wireless internet connection.We have a NSA 3500 with SonicOS Enhanced 5.1.0.2-5o. … Be sure to replace ADAPTER_NAME_FROM_BEFORE with whatever your network adapter name is, without quotesĦ) Verify Rsc is disabled for ipv4 and ipv6, on your network adapter: Powershell Disable-NetAdapterRsc -Name ADAPTER_NAME_FROM_BEFORE … Mine listed a table that had 1 row, for adapter name Wi-Fi, that had IPv4Enabled True, and IPv6Enabled True Start > All Apps > Windows System -> Right-click “Command Prompt” > More > Run as administratorģ) Note your adapter’s name (mine is: Wi-Fi)Ĥ) Get your network adapter “Receive segment coalescing” (Rsc) settings: If you’d rather do it manually, then I have those steps below. Microsoft actually provides an automated fix as a download.ĭetails can be found at the following Microsoft Answers link:ĭisabl e “Receive segment coalescing” (Rsc) on your wireless adapter Steps to disable Rsc using Microsoft’s automated tool:ġ) Download the “.diagcab” file located here:Ģ) Run it, and let it see if it can determine the problem and fix it.ģ) Re-test your wireless internet connection. The solution is to disable something called the Receive Segment Coalescing on the wireless adapter. SolutionĮvidently, I found that this is an issue with Windows 10. In most cases, I have seen internet speeds of up to 50-90mbps when off the VPN slow down to less then 1Mbps.Īfter a heap of troubleshooting with setting on the VPN client the issue was caused by the wifi adaptor as I will explain in the solution below. If you are using the Sonicwall Global VPN Client 4.10.2 on a Windows 10 machine you may experience an issue where your Internet speed will deteriorate. ![]() Slow Internet when using the SonicWALL Global VPN client
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