SoftEther VPN User Forum

Hi everyone,

I've been using the fantastic SoftEther software for two years, though I’m not very familiar with the technical details behind it. Starting this morning, I noticed that I’m unable to connect to my server without enabling NAT-T, regardless of whether I’m using the official SoftEther VPN client on Windows 10 or the SSTP software on iOS. No settings were changed before or after this issue began.

While I can still connect using NAT-T, I’m a bit concerned since I receive a warning indicating that VPN connections through NAT-T might be less stable.

Could anyone offer some guidance or advice on how to resolve this issue?

Thanks in advance!
Terry

sd315719 wrote: ↑

Fri Sep 20, 2024 8:06 pm

Starting this morning, I noticed that I’m unable to connect to my server without enabling NAT-T, regardless of whether I’m using the official SoftEther VPN client on Windows 10 or the SSTP software on iOS.

SSTP has nothing to do with NAT-T. It seems your VPN server is no longer forwarding SE port.

Weird. I have two servers and they suddenly all have this issue without any setting changes.