Sonicwall SSL-VPN + USB WiFi 适配器断开连接

Sonicwall SSL-VPN + USB WiFi 适配器断开连接

这可能需要解决服务器故障但不确定。

系统规格:

Dell Desktop
Ralink 802.11n USB WiFi adapter 
Sonciwall NetExtender
SSL-VPN Client Windows 7 Pro x64

问题

当尝试传输大于 100kb 的文件时(即使是缩略图显示带有图像的文件共享),VPN 连接也会断开。我可以使用远程桌面,但尝试使用 vSphere 的 Web 客户端会导致它断开。

我有另一台带有原生 WiFi 适配器的戴尔笔记本电脑,并且可以通过 VPN 传输 GIGS,没有任何问题。

我启用了“多媒体/游戏模式”,也禁用了它进行测试。没有变化。

不使用 VPN 的常规互联网没问题。我可以毫无问题地下载大型文件(1GB 以上)。不使用 VPN 的速度测试显示为 11Mbps(50 Mbps 连接),这对于我的任何 wifi 设备来说都是平均水平。

NetExtender 调试日志: http://pastebin.com/GrtC7Twk

事件查看器

信息 RasMan 20268

CoID={9BA8BEFA-8549-4333-A786-63C4ED44A7EF}:用户使用设备 GENERIC12-0 与 SonicWALL NetExtender 的连接已断开。

这是通用错误日志:

==========NetExtender Log==========

Format: 1.0.0

Service Version: 7.5.223

Core DLL Version: 1.0.53

unknown Windows version Service Pack 1

Exported At: 04/06/2016 22:24:13


==========Log Messages==========


04/06/2016 22:21:39,    Error,  0x06000308, Engine, NetExtender has been disconnected for one of the following reasons:
-There was a break in the network connection.
-The connection was idle for longer than the configured idle timeout.
-Your user account was logged out of the SSL VPN portal.,   

04/06/2016 22:21:39,    Info,   0x00000600, Engine, Initializing engine..., 

04/06/2016 22:21:49,    Info,   0x00010600, Engine, Verifying user...,  

04/06/2016 22:21:50,    Info,   0x00030600, Engine, Initializing connection parameters...,  

04/06/2016 22:21:50,    Info,   0x00030501, Engine, Initializing connection parameters...,  

04/06/2016 22:21:50,    Info,   0x00040600, Engine, Checking updates...,    

04/06/2016 22:21:51,    Info,   0x00070600, Engine, Initializing driver..., 

04/06/2016 22:21:51,    Info,   0x00080600, Engine, Initializing security functions..., 

04/06/2016 22:21:51,    Info,   0x01000600, Engine, Connecting...,  

04/06/2016 22:21:52,    Info,   0x01010600, Engine, Connected successfully.,    

答案1

Ralink 是许多问题的根源,所以我建议你换一个 Wifi。正常的 tcp/ip 连接不会发现有问题的无线硬件,因为它重新连接的速度非常快 - 另一个故事是 VLAN,它需要经过加密协商。VLAN 对数据包丢失极为敏感。带宽增加会增加连续三个数据包被丢弃的几率,这足以导致 VLAN 丢失。如果这还不够糟糕,Sonicwall 也因 VLAN 丢失而闻名,尽管通常通过固件升级来解决。

答案2

这是 SonicWall 固件中的一个错误,已在以下版本中修复SonicOS 6.2.5.1

NetExtender clients are frequently disconnected while transferring data, and one of several error messages 
displays:

• There was a break in the network connection  
• The connection was idle longer than configured idle timeout   
• Your user account was logged out of the SSLVPN Portal 

Occurs when attempting a file transfer or sending a substantial amount of traffic over 
the tunnel

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