An utility layer gateway (ALG) is a community machine that operates on the utility layer of the Open Techniques Interconnection (OSI) mannequin. It mediates communication between two networks, usually a non-public community and a public community, such because the web. ALGs are used to supply safety, entry management, and different providers.
ALGs are necessary as a result of they may also help to guard networks from assault, be sure that solely approved customers can entry sure sources, and enhance the efficiency of community purposes. For instance, an ALG can be utilized to: