Port Authority Edition – Internet Vulnerability Profiling
by Steve Gibson,  Gibson Research Corporation.

Goto Port 426
Probe Port 427
Enter Port: 0-65535
Goto Port 428

Port Authority Database

Port 427


Service Location Protocol

This protocol, used predominantly by Sun and Netscape, provides a means for devices and services to offer Internet-wide location and configuration services. By rendezvousing on the permanently defined port 427, SLP-aware services are able to locate each other and exchange information.

Related Ports: 

Background and Additional Information:




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