Internet TCP port 22 is primarily used by Secure Shell (SSH) protocol to enable secure remote logins and file transfers. This port is also utilized by Secure File Transfer Protocol (SFTP) and Secure Copy Protocol (SCP) for secure data transfer. Software examples that use this port include OpenSSH, PuTTY, and WinSCP. It is a standard port for encrypted communication and is commonly used in Unix-like systems for system administration purposes.
TCP port 22 is commonly used for Secure Shell (SSH) remote administration, which makes it a frequent target for hackers. In the past, hackers have exploited this port by using brute force attacks to guess weak passwords and gain unauthorized access to systems. Additionally, they have exploited vulnerabilities in older versions of SSH running on port 22 to execute arbitrary code or cause a denial of service. Misconfigurations on port 22 have also been exploited to bypass authentication mechanisms. Furthermore, hackers have used port 22 for tunneling to hide malicious traffic and maintain persistence on compromised systems. Lastly, port 22 has been used in botnet activities for command and control communication.
