Step-by-step checks for VPN connected but no internet, one site failing, slow speed, TLS/SSL errors, captive portals, and mobile network issues.
This section is structured as practical diagnostics: symptom, likely cause, how to check, how to fix, and what to do if it still fails.
| Symptom | Likely cause | How to check | How to fix | If it did not help |
|---|---|---|---|---|
| VPN connected but no internet | DNS, route, kill switch, captive portal | Compare a domain and a direct IP | Reconnect, change DNS/server | Test another network and send results |
| One site does not open | CDN, site policy, DPI, MTU | Try direct access and another VPN server | Change location, clear DNS/browser state | Record URL, server, and timestamp |
| TLS/SSL error only with VPN | HTTPS inspection, wrong clock, network filter | Check date, browser, and another network | Disable HTTPS scanning and Secure DNS for one test | Send the exact browser error |
| VPN is worse on mobile data | Weak signal, CGNAT, carrier shaping | Compare LTE/5G and Wi-Fi with one test | Change server, network mode, and test location | Record carrier and signal level |
GhostMesh VPN 已连接但无法上网 实用指南：检查 DNS、路由、泄漏保护以及常见连接问题。
诊断使用VPN时单个网站无法访问的问题。检查DNS、浏览器状态、CDN路由、网站策略、DPI以及其他VPN服务器。
排查移动网络下的VPN性能问题。比较Wi-Fi与LTE/5G、信号强度、运营商NAT、DNS、路由以及电池策略。
了解VPN速度下降的原因，诊断服务器距离、路由、Wi-Fi质量、MTU、DNS以及测试误差。
诊断仅在使用VPN时出现的TLS和SSL错误。检查设备时间、浏览器状态、HTTPS检测、DPI、DNS以及其他网络。
了解为什么强制门户会在公共Wi-Fi下阻断VPN流量，以及如何登录、测试DNS、重新连接，并避免与Kill Switch产生混淆。
GhostMesh ERR_CONNECTION_RESET 与 VPN 实用指南：检查 DNS、路由、泄漏保护以及常见连接问题。
当Kill Switch持续阻断流量时，修复VPN断开后的网络访问问题。检查VPN状态、受保护的应用、路由以及公共Wi-Fi门户。
当 GhostMesh 显示已连接但流量不通时，排查 Windows SRSP：系统代理、PAC、Wintun、防火墙、DNS、IPv6 与安装包资产。
