Internet TCP port 5901 is commonly used by Virtual Network Computing (VNC) systems for remote desktop access. For instance, software like RealVNC, TightVNC, and UltraVNC use this port to allow users to control another computer over a network connection. It is the second of the sequentially assigned ports for VNC (starting from 5900), typically used for the second virtual display. It's important to note that this port should be properly secured to prevent unauthorized access.
TCP port 5901 is commonly associated with VNC (Virtual Network Computing) services, which are often used for remote desktop connections. In the past, hackers have exploited this port to gain unauthorized access to systems. They typically do this by guessing or cracking weak passwords, or by exploiting outdated VNC software with known vulnerabilities. Once they gain access, they can control the system as if they were sitting in front of it, potentially stealing sensitive data or installing malicious software. Therefore, it's crucial to secure this port with strong passwords and keep the VNC software up-to-date.