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Cloudflare Warp

June 6, 2025 · 7 min read · Page View:
Tutorial
Network | Cloudflare | CDN

Frankly speaking, the first time I heard about Cloudflare is the service so called Cloudflare WARP which is provided by Cloudflare. Nowadays, you must have heard the fastest and private network can be provided by Cloudflare. If I say Cloudflare achieves the fastest object by the first step to visiting any website, the world’s fastest public DNS 1.1.1.1. You can probably guess the private provider, yes, that is Cloudflare WARP. So this article I will introduce the Cloudflare WARP further zero trust and how to use it.

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The principle of Cloudflare SaaS Optimization

June 4, 2025 · 5 min read · Page View:
Tutorial
Cloudflare | DNS | CDN | Network

In common situation, when you use the cloudflare to resolve your domain name, and you choose to use the cloudflare proxy(the yellow cloud icon), then cloudflare would probably get your domain resources into their CDN, that could be a good thing, but as we know, the network in mainland has some special rules, so for the free tier user, the access to the resources in the CDN would be somehow worse, even rest. That means, if the user connect to the node which has high latency, the request will experience worse. So this article will introduce some methods to help your resources access to the cloudflare nodes which are optimized for the mainland.

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The MitM and HTTPS Capturing

June 3, 2025 · 1 min read · Page View:
Tutorial
Network | Https

Do you really know what is the network activity on your phone? Have you ever wondered how to capture the https packages on your phone? In this article, I will introduce you to the MitM and how to capture the https traffic on your phone.

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The Iftop

January 30, 2025 · 1 min read · Page View:
Tutorial
Linux | Network

I frequently use ifconfig and cat /proc/net/dev to examine network information. However, today, my cloud server crashed unexpectedly. I reached out to the cloud support for assistance. The engineer utilized iftop to analyze the situation. After the issue was resolved, I started to consider using this tool. Now, let’s take a closer look at this powerful utility.

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Introduction to the HTTP and HTTPS Protocol

January 4, 2025 · 10 min read · Page View:
Tutorial
Network | Https

HTTP protocol is the foundation of the Internet, and HTTPS is the secure version of HTTP. HTTP is an application layer protocol based on TCP/IP protocol. It does not involve packet (packet) transmission, mainly specifying the communication format between the client and the server, and the default port is 80.

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Mail Service and Protocol

January 4, 2025 · 2 min read · Page View:
Tutorial
Network | Mail

Recently, I have been working on DNS of my domain name. And then I need to set up the mail service of my domain name. When I tried many times, I always failed to receive the mail on my phone. Suddenly, I remembered that I didn’t set up IMAP service. So let’s review the mail service and protocol.

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A Brief Introduction to DNS

December 26, 2024 · 11 min read · Page View:
Tutorial
Network | DNS

In my mind, DNS is the key of the internet. I always believe if you control the DNS, you control the Internet world. So let us get started to know the DNS.

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