Network security is a critical concern for any organization, and understanding which ports are commonly targeted by hackers is essential to safeguarding systems. Some ports are particularly attractive to attackers due to the services they provide access to.

Remote Desktop Protocol (RDP) – Port 3389 RDP services are prime targets for attackers because gaining access can lead to control over the entire system. Weak password policies are the primary vulnerability, as highlighted by the FBI. Strengthening password policies and restricting RDP access to users within a designated security group can mitigate risks. Consider using VPNs for remote access and exploring more secure alternatives like Citrix.

Web Server (HTTP) – Port 80 Web servers, especially on port 80, are attractive to hackers because they must be accessible from the internet. Running a web server on port 80 implies unencrypted traffic, vulnerable to interception. Transitioning to HTTPS (port 443), keeping server software up-to-date, and obtaining SSL/TLS certificates from providers like Let’s Encrypt can enhance security.

Web Services – Port 8080 Port 8080, often used as an alternative for HTTP services, faces similar threats as port 80. Ensuring that services running on this port are secure and patched is crucial to preventing attacks.

Telnet – Port 23 Telnet, which sends data in unencrypted plain text, is outdated and insecure. Hackers can easily intercept credentials using packet sniffing tools. Disabling telnet and using Secure Shell (SSH) instead can significantly enhance security.

Secure Shell (SSH) – Port 22 SSH is more secure than Telnet but still vulnerable to brute-force attacks. System administrators can enhance SSH security by implementing measures like using TCP Wrappers, running SSH on a non-standard port, disabling root login, and enforcing strong password policies.

Router Remote Management (TR-069) – Port 7547 Hackers exploit port 7547 to compromise routers and integrate them into botnets. Proper management and security measures are necessary to prevent such attacks, including closing port 7547 when not in use and ensuring routers are secure from external access.