Loading...
EFS Server
The Extended File Name Server (EFS) operates on port 520. It facilitates handling of file name mapping and directory services, often associated with older UNIX and DEC systems to provide name services over networks. Although largely supplanted by modern directory protocols, it historically played a role in distributed file environments..
Overview: Port 520 hosts the Extended File Name Server (EFS), historically used in DECnet and UNIX-based environments for mapping file names and managing directory services across the network. It helped users locate and access files on remote systems transparently.
Protocol Details: EFS uses a request-response method for translating file references and providing file-related metadata. It typically functioned alongside network file systems or as a companion service to streamline distributed file access.
Deployment Context: While employed on TCP port 520, its usage diminished with the advent of more sophisticated protocols like LDAP and advances in network file systems (NFS, SMB/CIFS). Today, port 520 is more commonly known for RIP, but historically it served multiple roles.