What is SSH?
SSH or Secure Shell is a popular cryptographic network protocol used for secure remote login and file transfer. However, with the rise of cybercrime, SSH has become a target for malicious actors who attempt to gain unauthorized access to remote servers by guessing login credentials. This is known as an SSH brute force attack, and it can have devastating consequences if successful.
What is an SSH Brute Force Attack?
An SSH brute force attack is a hacking technique that involves repeatedly trying different username and password combinations until the attacker gains access to the remote server. The attacker uses automated tools that can try thousands of username and password combinations in a matter of seconds, making it a fast and effective way to compromise a server.
How It Works
An SSH brute force attack exploits weak or default passwords that are commonly used on servers. These passwords can be easily guessed by attackers using common passwords lists and automated tools. Once the attacker gains access, they can then use the server for malicious purposes, such as stealing data or launching further attacks.
How to Prevent SSH Brute Force Attacks
Preventing SSH brute force attacks requires a multi-layered approach that involves both technical and administrative controls. Here are some steps you can take to prevent SSH brute force attacks:
- Use Strong Passwords: Always use strong passwords that are difficult to guess. Passwords should be at least 12 characters long and contain a mix of upper and lower case letters, numbers, and special characters.
You can use our Password Generator to create strong passwords here: https://pwm.trendmicro.com/password-generator
- Limit Login Attempts: Configure your SSH server to limit the number of
- Use SSH Keys: Consider using SSH keys instead of passwords. SSH keys are a pair of cryptographic keys that can be used to authenticate users
This is a more secure authentication method than passwords because the private key is never transmitted over the network.
- Use a Firewall: Use a firewall to restrict access to your SSH server. Only allow connections from trusted IP addresses or ranges.
- Monitor Logins: Monitor your SSH logs for unusual activity. This will help you detect any unauthorized login attempts and take action to prevent further attacks.
How Trend Micro can help with SSH Brute Force Attack
While Trend Micro Home Products do not have a direct solution for SSH Brute Force Attack, they can help in mitigating the risk of such attacks by providing endpoint protection for home users. Their products offer advanced protection against online threats such as malware, phishing, and web threats through features like anti-malware, anti-phishing, and web threat protection. Additionally, Trend Micro Home Network Security can provide protection for home networks, including network intrusion detection and prevention.