Chapter 10 Install and System Administration for FortiOS 5.0 : Session helpers : ONC-RPC portmapper session helper (pmap)
  
ONC-RPC portmapper session helper (pmap)
Open Network Computing Remote Procedure Call (ONC-RPC) is a widely deployed remote procedure call system. Also called Sun RPC, ONC-RPC allows a program running on one host to call a program running on another. The transport address of an ONC-RPC service is dynamically negotiated based on the service's program number and version number. Several binding protocols are defined for mapping the RPC program number and version number to a transport address.
To accept ONC-RPC sessions you must add a security policy with service set to any or to the ONC-RPC pre-defined service (which listens on TCP and UDP port number 111). The RPC portmapper session helper (called pmap) handles the dynamic transport address negotiation mechanisms of ONC-RPC.
See Also
Viewing the session helper configuration
Changing the session helper configuration
DCE-RPC session helper (dcerpc)
DNS session helpers (dns-tcp and dns-udp)
File transfer protocol (FTP) session helper (ftp)
H.245 session helpers (h245I and h245O)
H.323 and RAS session helpers (h323 and ras)
Media Gateway Controller Protocol (MGCP) session helper (mgcp)
PPTP session helper for PPTP traffic (pptp)
Remote shell session helper (rsh)
Real-Time Streaming Protocol (RTSP) session helper (rtsp)
Session Initiation Protocol (SIP) session helper (sip)
Trivial File Transfer Protocol (TFTP) session helper (tftp)
Oracle TNS listener session helper (tns)