Some PC can’t connect L2TP VPN if gateway is behind NAT
Root Cause:
This is windows issue.
Workaround:
Log on to the Windows client computer as a user who is a member of the Administrators group.
1)Select Start > All Programs > Accessories > Run, type regedit, and then select OK. If the User Account Control dialog box is displayed on the screen and prompts you to elevate your administrator token, select Continue.
2)Locate and then select the following registry subkey:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\PolicyAgent
3)On the Edit menu, point to New, and then select DWORD (32-bit) Value.
Type AssumeUDPEncapsulationContextOnSendRule, and then press ENTER.
Right-click AssumeUDPEncapsulationContextOnSendRule, and then select Modify.
In the Value Data box, type values “2”
4)Restart the computer.
Reference:
https://learn.microsoft.com/en-us/troubleshoot/windows-server/networking/configure-l2tp-ipsec-server-behind-nat-t-device
Categories
- All Categories
- 415 Beta Program
- 2.5K Nebula
- 152 Nebula Ideas
- 101 Nebula Status and Incidents
- 5.8K Security
- 296 USG FLEX H Series
- 281 Security Ideas
- 1.5K Switch
- 77 Switch Ideas
- 1.1K Wireless
- 42 Wireless Ideas
- 6.5K Consumer Product
- 254 Service & License
- 396 News and Release
- 85 Security Advisories
- 29 Education Center
- 10 [Campaign] Zyxel Network Detective
- 3.6K FAQ
- 34 Documents
- 34 Nebula Monthly Express
- 87 About Community
- 76 Security Highlight