Solving the problem that the Bricklayer server IP can be pinged but cannot connect via remote SSH

This morning I saw a netizen in the group mentioning that when he was using the Bricklayer VPS host, the server could PING, but his SSH remote connection could not be connected. This problem does not seem to be that the server's IP has been blocked, because I have also seen it. His screenshots include nodes in mainland China and abroad that can be accessed, but there is a slight delay. So what exactly is this problem and how to solve it?

First, check the server IP address

There is a possibility. For example, if our server IP is blocked, some of the IP nodes in mainland China are blocked, and some of the IP nodes in foreign countries are blocked. Of course, there are also all blocked ones. For this, we can use the PING detection tool to check most of the test nodes of the server to see if there are large areas of PING timeout. At the same time, we can see if all the timeout parts are from mainland China or abroad. IP address.

If there is no obvious failure timeout, it should not be a problem of the server being blocked.

Second, check the items in the server

This classmate built his website using Bricklayer VPS hosting. We asked him if the website could be opened, and he said that the website could be opened normally without any impact. This shows that the problem is not big. At least it can ensure that there is no problem with the server, and that the server is not blocked due to violations of TOS regulations or illegal uses.

Third, check whether the port is open

At the beginning of the host evaluation, I suspected that there was a local network problem. There was packet loss and it was impossible to connect to SSH. This problem also exists. So I asked him to give me the ROOT information of the server, but I couldn't log in either. So I suspected it was a port problem. So, I checked and found that his ROOT port was blocked. Here, we can modify the port through ROOT SHELL.

We refer to "How to check if the SSH port is blocked and how to change the SSH port" to modify the default port and replace it with another one.

Finally, the problem is of course solved. It is not clear why the ROOT SSH port failed. We have encountered this situation before with other service providers. Anyway, the problem is solved.

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