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Tag: iptables

Help customers to remotely troubleshoot vultr Wireguard without handshake and cannot access the Internet problem (full record)

2026/06/16

Post Views: 14 Preface A few days ago, a reader found me on WeChat and sent such a message: ‘Hello, I followed the server according to the process of your blog article, and the server firewall is also opened, but there is still no handshake prompt for the mobile phone to modify the port, and I can’t access the Internet.…
Complete troubleshooting and schema optimization for Google Play update exceptions on Android

2026/06/05

Post Views: 24 🧭 1. Problem background (real use scene) On Android phones, I use two VPN network architectures at the same time: 🟢 Scheme A: Vultr + Wireguard (Singapore) 📷 (Figure 2: Vultr Wireguard is updated normally) 🔴 Scenario B: ZGoCloud + Wstunnel + Wireguard + Clash Verge Rev (L.A.) 📷 (Figure 1: Play Store cannot be updated) 👉…
Self-built WireGuard solution port is frequently blocked, the ultimate minimalist solution (nanny class can be reproduced)

2026/05/04

Post Views: 73 Self-built WireGuard VPN The most troublesome problem:The UDP port fails every 2 days or so, the client has no last handshake time, and the ports such as 57586, 2096, and 443 are repeatedly replaced., tossing back and forth a lot of trouble. The root cause: operator DPI deep packet detection, WireGuard native data packet features are fixed,…
Self-built VPN series Part 4 Wireguard self-built VPN accidental unavailable full replay: from normal use → suddenly no handshake → port is blocked → port change + intelligent shunt complete solution process

2026/05/02

Post Views: 129 The early background 2. Preliminary server optimization (UFW, iptables complete command line, must save!)This step is an optimization that has been completed before the fault, the purpose is to clean the server firewall conflict and ensure that the WireGuard forwarding is normal, and the subsequent troubleshooting can directly troubleshoot this link, and the command line is executed…
My personal blog, today suddenly responded to 504’s troubleshooting process

2026/02/25

Post Views: 53 1. My personal blog suddenly responded to 504’s investigation and resolution process today. as shown in Figure 1 2. 504 Gateway Timeout Description Nginx (or other reverse proxy) waits for the backend (PHP-FPM) response timeout. Check in the following order: 3. Execute the top command, the result is shown as follows: The problem is very clear, and…
Implementation of HTTP requests Google and YouTube after installing v2ray in CentOS 7.x of Alibaba Cloud Continental ECS

2021/06/30

Post Views: 72 1. List all version information and execute the command: lsb_release -a. Version: CentOS 7.7. as shown in Figure 1 2. Check the bash version: 4.2.46. as shown in Figure 2 3. Install and update V2ray, refer to the website: https://github.com/v2fly/fhs-install-v2ray/blob/master/readme.zh-hans-cn.md . as shown in Figure 3 4. I purchased a commercial version of the V2ray server getss,…

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Tag: iptables

Help customers to remotely troubleshoot vultr Wireguard without handshake and cannot access the Internet problem (full record)

Complete troubleshooting and schema optimization for Google Play update exceptions on Android

Self-built WireGuard solution port is frequently blocked, the ultimate minimalist solution (nanny class can be reproduced)

Self-built VPN series Part 4 Wireguard self-built VPN accidental unavailable full replay: from normal use → suddenly no handshake → port is blocked → port change + intelligent shunt complete solution process

My personal blog, today suddenly responded to 504’s troubleshooting process

Implementation of HTTP requests Google and YouTube after installing v2ray in CentOS 7.x of Alibaba Cloud Continental ECS