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20.7 Legacy Series / Re: IPSEC traffic stalling after 20.7.1 upgrade
« on: February 07, 2021, 10:35:46 pm »
The Windows 10 IPSec client has not activated PFS by default.
I had activated PFS under "VPN: IPsec: Mobile Clients -> Phase 2 PFS Group". Windows 10 silently establishes a connection without errors. The connection dies after approx. 200-300 MB of data has been transferred.
To solve this, the connection must be created via Powershell and, for example, the correct PFS parameters must be transferred. This is not possible in the GUI.
PS C:\> Add-VpnConnection -Name "Contoso" -ServerAddress 176.16.1.2 -TunnelType "Ikev2"
PS C:\> Set-VpnConnectionIPsecConfiguration -ConnectionName "Contoso" -AuthenticationTransformConstants None -CipherTransformConstants AES256 -EncryptionMethod AES256 -IntegrityCheckMethod SHA384 -PfsGroup ECP384 -DHGroup ECP384 -PassThru -Force
I had activated PFS under "VPN: IPsec: Mobile Clients -> Phase 2 PFS Group". Windows 10 silently establishes a connection without errors. The connection dies after approx. 200-300 MB of data has been transferred.
To solve this, the connection must be created via Powershell and, for example, the correct PFS parameters must be transferred. This is not possible in the GUI.
PS C:\> Add-VpnConnection -Name "Contoso" -ServerAddress 176.16.1.2 -TunnelType "Ikev2"
PS C:\> Set-VpnConnectionIPsecConfiguration -ConnectionName "Contoso" -AuthenticationTransformConstants None -CipherTransformConstants AES256 -EncryptionMethod AES256 -IntegrityCheckMethod SHA384 -PfsGroup ECP384 -DHGroup ECP384 -PassThru -Force