Changing the port used for SSH a good security practice?

 The port used for SSH can be considered a good security practice as it adds an extra layer of protection against automated scanning and brute-force attacks. By default, SSH uses port 22, and attackers often target this port to attempt unauthorized access to systems.

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Changing the default SSH port can make it more difficult for automated bots and scanners to identify the SSH service on your system. However, it's important to note that this practice is not a foolproof security measure and should be used in conjunction with other security practices for effective protection.

Here are a few considerations regarding changing the SSH port:

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Increased obscurity: Changing the port adds an additional layer of obscurity, making it harder for attackers to locate the SSH service. However, it's important to understand that this is not a substitute for robust security measures such as strong passwords, key-based authentication, and regular security updates.

Impact on convenience: Changing the SSH port can create inconvenience for legitimate users who are accustomed to connecting on the default port. It may require manual configuration changes on client systems or the use of additional command-line options.

Log monitoring: It's crucial to ensure that the system's logs are properly configured to track SSH connection attempts, regardless of the port. Monitoring and reviewing the logs can help detect and respond to any suspicious activity.

Firewall considerations: If you change the SSH port, ensure that your system's firewall rules are updated to allow incoming connections on the new port while blocking them on the default port.

While changing the SSH port can provide some level of protection against automated attacks, it's important to implement other security measures as well. These include using strong passwords or key-based authentication, regularly updating your SSH software, and following best practices for system hardening and security.

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