Provided by: authbind_2.1.1+nmu1_i386 bug

NAME

       authbind-helper  -  helper  program to bind sockets to privileged ports
       without root

SYNOPSIS

       /usr/lib/authbind/helper addr4-hex port-hex <socket
       /usr/lib/authbind/helper addr6-hex port-hex 6 <socket

DESCRIPTION

       helper is the program used by libauthbind, which is  in  turn  used  by
       authbind  to  allow  programs which do not or should not run as root to
       bind to low-numbered ports in a controlled way.  See authbind(1).

       It may also be used standalone, i.e. without assistance from  authbind.
       Its  standard  input should be a TCP/IP socket, and it should be passed
       two or three arguments.

       The arguments are the address and port number, respectively,  to  which
       the  caller  desires  that  the socket be bound, and the address family
       (ommitted for IPv4; the fixed string 6 for IPv6).  addr4-hex and  port-
       hex  should  be  hex  strings, without leading 0x, of exactly the right
       length (8 and 4 digits, respectively), being a pair of hex  digits  for
       each  byte  in  the  address or port number when expressed in host byte
       order.  For example, the port argument is the result of something  like
       sprintf(arg, "%04X", sin.sin_port).  addr6-hex should be a string of 32
       hex digits, being a pair for each byte in the address, in network  byte
       order.

EXIT STATUS

       helper will exit with code 0 on success.

       If  possible, helper will return an appropriate errno value as its exit
       status.  If this is not possible it may exit with status 255 or with an
       exit status corresponding to ENOSYS (Function not implemented).

ACCESS CONTROL

       See authbind(1) for details of the access control regime implemented by
       helper.

SEE ALSO

       authbind(1), bind(2)

AUTHOR

       authbind and this manpage  were  written  by  Ian  Jackson.   They  are
       Copyright (C)1998,2012 by him and released under the GNU General Public
       Licence; there is NO  WARRANTY.   See  /usr/doc/authbind/copyright  and
       /usr/doc/copyright/GPL for details.