Keep other unused services disabled

To ensure security, disable unused services.

HRL, PM, and XCA Gateway servers do not use following protocols, services, or information for its functionality:
  • Identification Protocol (identd): Identifies the owner of a TCP connection on UNIX.
  • Simple Network Management Protocol (SNMP): Manages and reports information about different systems.
  • File Transfer Protocol (FTP): Transfers or copies file from one host to another. FTP is inherently insecure and should be disabled.