The default port for the Web User interface on a Security Gateway installed on GAIA R80 is?

The default port for the Web User Interface (WebUI) on a Security Gateway installed on GAIA R80 is TCP 443. This port is commonly used for HTTPS traffic, which provides a secure channel over the network. Since web interfaces require a secure connection to protect sensitive configurations and data from being intercepted, TCP 443, which is dedicated to HTTPS, is the logical default choice.

In the context of network security and management tools, utilizing TCP 443 ensures that communications between administrators and the Security Gateway are encrypted, enhancing the overall security posture of the environment. By default, most systems that provide web-based management functionalities tend to target this port because of its widespread use and compatibility with standard security practices across various platforms.

In contrast, the other options represent non-standard ports for this function within the context of GAIA R80. While there may be other services running on those ports, they are not used for the Web User Interface by default, which reinforces the significance of recognizing TCP 443 as the standard port for this purpose.