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- @(#) BLURB 1.5 96/07/06 23:09:45
-
- This is the fifth replacement portmapper release.
-
- There is an increasing interest in access control for the NIS, mount
- and other RPC-based services that are normally registered with the
- portmap process. Possible attacks on RPC daemons involve:
-
- - theft of NIS (YP) password files
-
- - ypset to force hosts to bind to a rogue NIS (YP) server
-
- - theft of NFS file handles
-
- My contribution is a replacement portmap program, derived from source
- code in the RPCSRC 4.0 and the TIRPC source distributions. Access
- control (optional) is in the style of my tcp wrapper (log_tcp) package.
-
- Supported platforms: this program is known to work with all SunOS 4.x
- releases. With some Makefile editing it should also work on Ultrix 4.x,
- HP-UX 9.x, AIX 3.x and AIX 4.x, and Digital UNIX (OSF/1).
-
- Solaris 2.x and other System V.4 UNIXes should use use my rpcbind
- replacement (ftp.win.tue.nl:/pub/security/rpcbind_*.tar.Z).
-
- This portmap version attempts to close all portmap security problems
- that are known to me. The README file gives a complete list of
- security features.
-
- Without the availability of portmap source, possible alternatives are
- 1) packet filtering with a smart router (which we do anyway); 2)
- linking the portmap executable against the securelib shared library.
- Linking RPC daemons against the securelib library is a good idea,
- anyway.
-
- The source is available for anonymous FTP from ftp.win.tue.nl directory
- /pub/security/portmap_*.tar.gz.
-
- Wietse Venema (wietse@wzv.win.tue.nl)
- Mathematics and Computing Science
- Eindhoven University of Technology
- The Netherlands
-