Forum Discussion

NicholasCarlson's avatar
NicholasCarlson
Network Novice
25 days ago

5G Gateways - New VPN Issues with G4SE and G4AR

Corporate VPNs are now being impacted by the G4AR and G4SE models, of which were once known as formerly compatible models with the VPN. My understanding is the MTU size on other models, such as the Sagecom FAST 5688W, were not compatible with corporate VPNs due to their lower MTU size.

The G4SE was always hit or miss, but the G4AR had a track record of 100% success. As of mid-May 2025, we have multiple reports that neither is working for multiple people. Our corporate VPN MTU size remains unchanged. 

Was there a recent update? I assume there was a firmware update for the G4AR that decreased the MTU size.

  • opachacom's avatar
    opachacom
    Network Novice

    I am having the same problem as of 2 weeks ago with G4AR and cisco anyconnect VPN. Any solutions? I've called customer service without a solution, and none of the settings are available for the end user on these gateways!

    • NicholasCarlson's avatar
      NicholasCarlson
      Network Novice

      We have a T-Mobile case going with the Business Tech Support team and if I hear anything conclusive I'll post here.

      Ultimately, the VPN will likely just need to be reduced to a more manageable level. Most VPN apps can do this, but an administrator will have to do it on their control panel.