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.
Do you know the basic method to manage the traffic? There are four methods: Load Balancers, Reverse Proxies, Forward Proxies, and API Gateways. And they have different features and usage scenarios.
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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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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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We can learn the proxy process of clash through the configuration file.
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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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For the computer network, I believe that most people have learned it in the course of university or college. No matter whether you are familiar with it or not, this article will give you a different perspective of the network. It can really help you a lot.
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