Linux and UNIX Man Pages

Linux & Unix Commands - Search Man Pages

portmap(8nfs) [ultrix man page]

portmap(8nfs)															     portmap(8nfs)

       portmap - DARPA internet port to RPC program number mapper


       The  command  is  a server that converts RPC program numbers into DARPA protocol port numbers.  When an RPC server is started, it will tell
       what TCP or UDP port number it is listening on, and what RPC program numbers it is prepared to serve.

       It is important to understand that must first be invoked before attempting to run any RPC service.  It must be running in order to use  any
       RPC-based applications, including the NFS mount daemon, When a client wishes to make an RPC call to a given program number, the RPC program
       will first contact on the server machine to determine the port number where the RPC packets should be sent.

       If crashes, all servers must be restarted.

See Also


Check Out this Related Man Page

PORTMAP(8)						    BSD System Manager's Manual 						PORTMAP(8)

portmap -- RPC program,version to DARPA port mapper SYNOPSIS
portmap [-d] [-v] [-h bindip] DESCRIPTION
Portmap is a server that converts RPC program numbers into DARPA protocol port numbers. It must be running in order to make RPC calls. When an RPC server is started, it will tell portmap what port number it is listening to, and what RPC program numbers it is prepared to serve. When a client wishes to make an RPC call to a given program number, it will first contact portmap on the server machine to determine the port number where RPC packets should be sent. Portmap must be started before any RPC servers are invoked. Portmap uses hosts_access(5) access control by default. Access control patterns may only reference IP addresses. Normally portmap forks and dissociates itself from the terminal like any other daemon. Portmap then logs errors using syslog(3). The following options are available: -d Prevent portmap from running as a daemon, and causes errors and debugging information to be printed to the standard error output. -v Enable verbose logging of access control checks. -h Specify specific IP addresses to bind to for UDP requests. This option may be specified multiple times and is typically necessary when running on a multi-homed host. If no -h option is specified, portmap will bind to INADDR_ANY, which could lead to problems on a multi-homed host due to portmap returning a UDP packet from a different IP address than it was sent to. Note that when specifying IP addresses with -h, portmap will automatically add to the list. SEE ALSO
hosts_access(5), inetd.conf(5), inetd(8), rpcinfo(8) BUGS
If portmap crashes, all servers must be restarted. HISTORY
The portmap command appeared in 4.3BSD. BSD
June 6, 1993 BSD
Man Page

8 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Portmapper not responding

Kindly When I start the server i have this error "portmapper on server is not responding" let me also clarify that this is the old IP of the server and the new one regards (1 Reply)
Discussion started by: sak900354
1 Replies

2. Linux

problem with pmap_set (portmapper)

Hi guys, i am putting this problem again please help me out.. The RPC problem is appearing on the screen while starting the portmap service,take a look of the real.. #/etc/init.d/portmap restart Stopping portmap: Starting portmap: Cannot register service: RPC: Timed out not registered:... (15 Replies)
Discussion started by: daya.pandit
15 Replies

3. Debian

NFS problems (Debian)

I'm trying to share some directories with NFS among Debian machines. In order to do so, I installed nfs-common and nfs-kernel-server on the server machine. It seemed that starting portmap daemon lasted a long time and I get the following messages in /var/log/messages: Jan 30 18:18:03 masternode... (26 Replies)
Discussion started by: bellman
26 Replies

4. SuSE

portmapper service

Hello, I've been asked to look this up and I'm having issue finding it. We are currently harding our servers and I'm new to SUSE 11. The security people at work want me to disable the portmapper service. How do you disable the portmapper service? Thanks ... (3 Replies)
Discussion started by: bitlord
3 Replies

5. AIX

portmap and nfsd

Hello, what is the relation between portmap and nfsd and how communication between them looks like. Does the nfsclient contact with the portmap or nfsd first. Many thanks in advance for helping me to understand this :) BR, p (3 Replies)
Discussion started by: pitmod
3 Replies

6. Solaris

Rpcinfo: can't contact portmapper: RPC: Authentication error; why = Failed (unspecified error)

I have two servers with a fresh install of Solaris 11, and having problems when doing rpcinfo between them. There is no firewall involved, so everything should theoretically be getting through. Does anyone have any ideas? I did a lot of Google searches, and haven't found a working solution yet. ... (2 Replies)
Discussion started by: christr
2 Replies

7. AIX

How to check that rpcbind/portmap on AIX allowes updates from non privileged ports?

Hi, I am trying to implement a service on AIX based on ONCRPC protocal and I want to use a RPC library called oncrpc4j because it is a non-blocked i/o library. I found it works fine on my work machine (WIndows 7) but failed on my AIX work station. The author of oncrpc4j told me that check that... (1 Reply)
Discussion started by: derekhsu
1 Replies

8. AIX

Unable to mount previously-working NFS share from NIM to LPAR

Right, now that I've finally worked out this website, I'll ask my question! I am having an absolute nightmare with NFS on AIX. I have used it many times, and I know what I'm doing, however I cannot fathom what is going on here. I have 2 LPARs, sitting on the same physical host. They are... (12 Replies)
Discussion started by: tmooredba
12 Replies