*nix Documentation Project
·  Home
 +   man pages
·  Linux HOWTOs
·  FreeBSD Tips
·  *niX Forums

  man pages->OpenBSD man pages -> ypbind (8)              



NAME    [Toc]    [Back]

     ypbind - create and maintain a binding to a YP server

SYNOPSIS    [Toc]    [Back]

     ypbind [-ypset] [-ypsetme] [-insecure]

DESCRIPTION    [Toc]    [Back]

     ypbind finds the server  for  a  particular  YP  domain  and
stores information
     about  it  in  a ``binding file''.  This binding information
includes the IP
     address of the server associated with that particular domain
and which
     port the server is using.  This information is stored in the
     /var/yp/binding  in  a  file  named  with   the   convention
     (The YP system only supplies information on version 2.)

     When ypbind starts the primary domain (or gets the first request for a
     new domain), it checks if a file for the domain in  question
exists in the
     directory  /etc/yp/  (i.e.,  /etc/yp/DOMAINNAME).  If such a
file exists, it
     will list the hosts which ypbind should restrict its  server
search to.
     Otherwise,  ypbind assumes it will need to use broadcasts to
find a valid
     server.  Using  either  of  these  techniques,  ypbind  will
search for a server
  willing  to  serve maps for the client's domain.  Once a
binding is established,
 ypbind maintains  this  binding  by  periodically
     with  the  server  to  which it is bound.  If the binding is
somehow lost,
     e.g by server reboot, ypbind marks the domain as unbound and
attempts to
     re-establish  the  binding.   When the binding is once again
     ypbind marks the domain as bound and  resumes  its  periodic

     The options are as follows:

     -ypset  ypset(8) may be used to change the server to which a
domain is

             ypset(8) may be  used  only  from  this  machine  to
change the server
             to which a domain is bound.

             permit  binding  to  a  ypserv(8)  on a non-reserved
port.  This is
             needed if receiving maps from SunOS 3.x or Ultrix.

     The -ypset and -ypsetme options are dangerous and should  be
avoided.  For
     greatest   security,   the   use   of   a   server  list  in
/etc/yp/DOMAINNAME is recommended.
  The file should contain a list of valid YP server
     with one hostname per line.  The comment character is #.

     If the directory /var/yp/binding exists, YP is started automatically at
     boot time by /etc/rc.

FILES    [Toc]    [Back]

     /var/yp/binding/DOMAINNAME.version - binding  file  for  domainname
     /etc/yp/DOMAINNNAME - server list for this particular domain

SEE ALSO    [Toc]    [Back]

     domainname(1), ypcat(1), ypmatch(1), ypwhich(1), yp(8),  yppoll(8),
     ypserv(8), ypset(8)

     Once  ypbind  is  running, the following pages should be reviewed in order
     to see how to enable YP support for each  of  the  following
     ethers(5),  group(5),  hosts(5), networks(5), passwd(5), resolv.conf(5)

AUTHORS    [Toc]    [Back]

     Theo de Raadt

OpenBSD     3.6                        October      25,      1994
[ Back ]
 Similar pages
Name OS Title
rpccp_import HP-UX Imports binding information and an object UUID from a server entry
rpccp_show_server HP-UX Shows the binding information, interface identifiers, and object UUIDs in a server entry
rpccp_unexport HP-UX Removes binding information, interface identifiers, and object UUIDs from a server entry
rpccp_export HP-UX Exports binding information for an interface identifier or object UUIDs or both to a server entry; if the spec
ar HP-UX create and maintain portable archives and libraries
nfssvc Tru64 Create a remote NFS server
ypinit OpenBSD create a YP server (master or slave)
async_daemon Tru64 Create a local NFS asynchronous I/O server
ncplogin FreeBSD create permanent connection to a NetWare server
ypbind Linux NIS binding process
Copyright © 2004-2005 DeniX Solutions SRL
newsletter delivery service