Interpretation and defense of SSH brute force cracking in Pagoda Linux panel

The following is the Pagoda panel tutorial column to introduce to you the interpretation and defense of SSH brute force cracking in the Pagoda Linux panel. I hope it will be helpful to friends in need!

#What is an SSH brute force attack?

SSH brute force cracking refers to an attacker trying to log in to the server (targeting machines on the entire network) through a password dictionary or a random combination of passwords. This attack generally does not have a clear target. Directly scan the entire broadcast domain or network segment through scanning software

How to detect brute force attacks?

1. View recent login logs: cat /var/log/secure

2. Calculate the number of recent failed logins: cat /var/log/secure|grep 'Failed password for root'|wc -l

The risk and security reminders on the Pagoda panel are based on statistics from your server logs.

How to defend against brute force attacks?

1: System and network security

1. Regularly check and repair system vulnerabilities

2. Regularly change SSH passwords or configuration Certificate login

3. Modify SSH port

4. Disable Ping

5. If you do not need to log in to SSH for a long time, please turn off the SSH service in the panel

6. Install security software such as hanging mirror, cloud lock, and security dog ​​(only install one)

2: Purchase the enterprise operation and maintenance version and enable the security isolation service

1. The security isolation function of Pagoda Enterprise Operation and Maintenance Edition is a function specially developed to intercept brute force cracking.

2. The security isolation service is like building a paddock outside your server, allowing only authorized IPs to enter.

Through the above operations, you can effectively prevent brute force login attempts.

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