FISA

  What is the Service Location Protocol (SLP)? SLP is a protocol that was created in 1997 through  RFC 2165   to provide a dynamic configuration mechanism for applications in local area networks. SLP allows systems on a network to find each other and communicate with each other. It does this by using a directory of available services, which can include things like printers, file servers, and other network resources. SLP works by having a system register itself with a directory agent, which then makes that system's services available to other systems on the network. Daemons providing SLP are bound to the default port 427, both UDP and TCP. SLP was not intended to be made available to the public Internet. According to RFC 2165, "Service Location provides a dynamic configuration mechanism for applications in local area networks. It is not a global resolution system for the entire Internet; rather, it is intended to serve enterprise networks with shared services." However, th