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Allow unprivileged apps to bind to a privileged port

Privbind is a utility that allows running non-root applications, only giving them one root privilege - binding to low (<1024) ports. The aim is similar, though using a completely different method, to "authbind".

Privbind is a completely user space solution. It has no SUID executables, and has to be started by a root user instead.

Privbind is useful for cases where there is a need to run an untrusted program that needs to bind to a low port, but requires no other root privilege. It is also useful if a daemon has no capability to drop privileges itself.

Package version:1.2-1


This is privbind 0.2, written by Shachar Shemesh with improvements by Amos
Shapira and Nadav Har'El.
Privbind is free software, released under the GNU General Public License
(see the attached file COPYING for details).

What is Privbind
Privbind is a tool for running a command as an unprivileged user, with
additional reserved port binding privileges.

Normally in Linux, only a su


13 June, 2007
First official release

With all known issues resolved, we are proud to announce version 1.01 of
privbind as ready for general use. Support is provided through the project's
mailing list at


privbind(1)                                              privbind(1)

       privbind  -  allow  an  unprivileged application to bind with
       reserved ports.

       privbind -u user [ -g group] [ -n num] [ -l path]  command  [
       arguments ... ]

       Normally  in  Linux,  only  a  superuser  process can bind an
       Internet domain socket with a  reserved 


privbind (1.2-1) unstable; urgency=low

  * Fix "1-byte buffer overflow" <explain what you changed a


2010-04-02  Shachar Shemesh <>
        * [r73] Fix a one off buffer over


This package was debianized by:

    Shachar Shemesh <> on Tue,  5 Jun 2007 16:34:

Browse inside privbind_1.2-1_mipsel.deb

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