I'm running a SoftEther VPN server, version 9760, on RbPi. Since it's behind a firewall (and NAT-T doesn't appear to work), I use VPN Azure to connect.
Connecting from a Windows client (version 9760), everything works beautifully, including UDP acceleration.
When I try to connect using a Linux-based client (5.02 build 5180 - 4.xx versions don't work, unfortunately) on the same network as my windows PC, with the exact same config file, however, I end up with a TCP connection (with 4 times the lagginess)... Weirdest of all, it shows that UDP acceleration is supported - just not active. Any suggestions how I could troubleshoot this?
Thanks!
Linux client status excerpt:
Code: Select all
Half Duplex TCP Connection Mode:No (Full Duplex Mode)
VoIP / QoS Function:Enabled
Number of TCP Connections:4
Maximum Number of TCP Connections:4
Encryption:Enabled (Algorithm: AES128-SHA)
Use of Compression:No (No Compression)
Physical Underlay Protocol:TCP/IP via VPN Azure (IPv4)
UDP Acceleration is Supported:Yes
UDP Acceleration is Active:No
Code: Select all
Half Duplex TCP Connection Mode:No (Full Duplex Mode)
VoIP / QoS Function:Enabled
Number of TCP Connections:2
Maximum Number of TCP Connections:2
Encryption:Enabled (Algorithm: RC4-MD5)
Use of Compression:No (No Compression)
Physical Underlay Protocol:TCP/IP via VPN Azure (IPv4)
IPv4 VPNAzure UDPAccel_Ver=2 ChachaPoly_OpenSSL UDPAccel_MSS=1309
UDP Acceleration is Supported:Yes
UDP Acceleration is Active:Yes