An utility layer gateway (ALG) is a community system that operates on the utility layer of the Open Methods Interconnection (OSI) mannequin. It mediates communication between two networks, sometimes a personal community and a public community, such because the web. ALGs are used to offer safety, entry management, and different providers.
ALGs are necessary as a result of they will help to guard networks from assault, be certain that solely licensed customers can entry sure assets, and enhance the efficiency of community purposes. For instance, an ALG can be utilized to: