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Barracuda NextGen Firewall X

MTU size problems in Microsoft Windows

  • Type: Knowledgebase
  • Date changed: one year ago
Solution #00005081
 
Scope:
This solution replies to:
- NG Network Access Client versions 2.0-SPx
- Entegra Client versions 1.0-SPx, 2.0-SPx

 
Symptoms:

You are encountering problems transferring data packages through the VPN tunnel. For example, Lotus Notes Replication does not work.


 

Solution:

Possibly, there is a problem concerning the MTU size in Microsoft Windows.


Enable MTU discovery in Microsoft Windows. Create the following registry key and DWORD value using the Registry Editor (Regedit.exe):

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters]\"EnablePMTUDiscovery"=dword:00000001

 

Attention!
If you use Registry Editor incorrectly, you can cause serious problems that may require you to reinstall your operating system. phion does not guarantee that problems that you cause by using Registry Editor incorrectly can be resolved. Use Registry Editor at your own risk.

 

 

Link to This Page:
https://campus.barracuda.com/solution/50160000000IKXyAAO