PortMap

Port 153

Well-known
Service
sgmp
Protocols
TCP UDP
Description
Simple Gateway Monitoring Protocol (SGMP) is an early network management protocol for remote monitoring and limited control of Internet gateways (routers) in IP networks. SGMP was published in RFC 1028 by the Internet Activities Board (IAB) in November 1987. It provided a simple protocol structure for querying and setting a small set of management variables on gateways, laying a foundation for later network management standards.
Citations