Remember to change the port when setting up a new server.

Feb 15, 2023#服务器安全82

AI Translation

This post is translated from Chinese into English through AI.View Original

AI-generated summary

It is important to change the port when setting up a new server to prevent password cracking attacks. The author experienced difficulties logging in due to someone attempting to crack the password, leading to account lockout. Changing the remote server port and allowing access is recommended. The author now always changes the port when setting up new servers to prevent password cracking attempts.

Just a little rant, today I set up a new Windows server, everything was fine at first, but later it showed client connection refusal.
After investigation, it turned out that someone was brute-forcing passwords, causing the account to be locked.

Change the remote server port and open the port: https://k7blog.com/post/175/

Snipaste_2023-02-15_20-45-48

I have always used a jump server for management. At first, I thought the server traffic was too heavy, preventing me from logging in. (It seems like the traffic limit is set based on the server's uptime, 9GB per hour)

It was only when I tried logging in with a Windows computer that I realized the actual reason - even when setting up a new Linux server, you need to change the port!
Anyway, now whenever I set up a new machine with any service provider, as long as it's on the default port, there will be brute-force password attacks coming in!