Killer WiFi 卡可以阻止 VPN。
简而言之，如果您的VPN无法正常工作，并且您的计算机配备了Intel Killer系列Wi-Fi适配器，请尝试禁用Killer软件附加组件（https://wallpunch.net/windows-killer-troubleshooting/）。
偶尔我会收到用户的支持请求，他们的手机上Wallpunch运行良好，但他们的Windows PC根本无法连接。标准的故障排除步骤没有提供任何线索：
- Windows应用能够完成与我们服务器的预连接身份验证步骤
- Windows应用在不同的Wi-Fi网络上无法工作，或者在连接到手机热点时无法工作
- 当手机与Windows PC连接到同一网络时，手机应用运行良好
- “ipconfig”和“route”命令显示的网络配置看起来正常
- Wallpunch调试日志显示PC的流量被VPN隧道正确捕获
一切似乎都按预期运行——除了与我们服务器的关键VPN隧道连接无法建立（客户端记录了TCP连接超时，服务器从未看到任何握手数据包）。
最初几次，在耗尽我能想到的所有调试选项后，我别无选择，只能向用户道歉，退款他们的订阅，并继续前进。但最终我注意到一个模式：所有受影响的计算机都有Intel Killer Wi-Fi适配器！
一些搜索显示，这个问题已经存在一段时间，Reddit以及Intel和Microsoft支持论坛上有几个讨论该问题的帖子。
- https://www.reddit.com/r/meraki/comments/8638kv/client_vpn_with_killer_network_service/
- https://community.intel.com/t5/Wireless/Smart-AP-disabled-due-to-VPN-Killer-Intelligence-Center/td-p/1513415/page/4
- https://learn.microsoft.com/en-us/answers/questions/4173090/killer-intelligence-centre-causing-a-problem
Nord甚至在他们的故障排除文档中有一个页面提到这个问题：https://support.nordvpn.com/hc/en-us/articles/20226287150609-Intel-Killer-Wi-Fi-adapter-not-working-with-NordVPN
基本上，Killer适配器附带了一些旨在加速互联网连接的软件附加组件，但可能会导致VPN出现问题。到目前为止，禁用这些附加组件已经解决了我所有受影响用户的问题。有关如何执行此操作的详细步骤，您可以查看上面链接的帖子或我制作的这个总结页面：https://wallpunch.net/windows-killer-troubleshooting/
我很高兴为我的用户解决了问题，但我希望能弄清楚Killer是如何阻止VPN连接的，以及是否有办法在不需要用户手动操作的情况下绕过这种阻止。如果您知道任何好的额外信息来源，或者如果您有Intel Killer卡并愿意帮助我进行进一步测试，请告诉我！
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tl;dr If your VPN isn't working and your computer has an Intel Killer series wi-fi adapter, try disabling the Killer software add-ons (https://wallpunch.net/windows-killer-troubleshooting/)<p>Occasionally I receive a support request from a user where Wallpunch is working great on their phone, but their Windows PC cannot connect at all. Standard troubleshooting steps yield no clues:<p>- The Windows app is able to complete the pre-connection authentication step with our servers<p>- The Windows app doesn't work on different Wi-Fi networks, or when connected to the phone hotspot<p>- The phone app works fine when connected to the same network as the Windows PC<p>- The network configuration shown by the "ipconfig" and "route" commands looks normal<p>- Wallpunch debug logging shows that the PC's traffic is being captured by the VPN tunnel correctly<p>Everything appears to be functioning completely as expected - except the critical VPN tunnel connections to our servers fail to connect (client records a TCP connection timeout, servers never see any handshake packets).<p>The first couple times, after exhausting all the debugging options I could think of, I had no choice but to apologize to the user, refund their subscription, and move on. But eventually I noticed a pattern: all of the affected computers had an Intel Killer wi-fi adapter!<p>Some searching revealed this has been a known problem for a while, with several threads discussing the issue on Reddit as well as the Intel and Microsoft support forums.<p>- https://www.reddit.com/r/meraki/comments/8638kv/client_vpn_with_killer_network_service/<p>- https://community.intel.com/t5/Wireless/Smart-AP-disabled-due-to-VPN-Killer-Intelligence-Center/td-p/1513415/page/4<p>- https://learn.microsoft.com/en-us/answers/questions/4173090/killer-intelligence-centre-causing-a-problem<p>Nord even has a page on it in their troubleshooting docs: https://support.nordvpn.com/hc/en-us/articles/20226287150609-Intel-Killer-Wi-Fi-adapter-not-working-with-NordVPN<p>Basically the Killer adapters come with a bunch of software add-ons that are intended to speed up your internet connection but can end up causing problems with VPNs. So far disabling these add-ons has solved the issue for all of my affected users. For detailed steps on how to do so you can check out the threads linked above or this summary page I made: https://wallpunch.net/windows-killer-troubleshooting/<p>I'm happy to have fixed things for my users but I'd love to get to the bottom of this and figure out how exactly the Killer is blocking VPN connections and if there is a way to get around that blocking without requiring manual user actions. If you know of any good sources of additional information, or if you have an Intel Killer card and would be interested in helping me with further testing, please let me know!