lwresd man page on HP-UX

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lwresd(1M)							    lwresd(1M)

NAME
       lwresd - lightweight resolver daemon

SYNOPSIS
       config-file]  debuglevel] pid-file] ncpus] query-port] port] directory]
	      user-id]

DESCRIPTION
       The daemon provides name lookup services for clients that use the  BIND
       9  lightweight  resolver	 library.   It is essentially a stripped-down,
       caching-only name server that answers queries using the BIND  9	light‐
       weight resolver protocol rather than the DNS protocol.

       listens	for resolver queries on a UDP port on the IPv4 loopback inter‐
       face, 127.0.0.1.	 This means that can only be used by processes running
       on  the	local  machine.	  By  default, UDP port number 921 is used for
       lightweight resolver requests and responses.

       Incoming lightweight  resolver  requests	 are  decoded  by  which  then
       resolves	 them  using the DNS protocol.	When the DNS lookup completes,
       encodes the answers from the name servers in the	 lightweight  resolver
       format and returns them to the client that made the original request.

       If  the	configuration  file  contains any entries, sends recursive DNS
       queries to those servers.  This is similar to the use of forwarders  in
       a  caching  name	 server.   If no entries are present, or if forwarding
       fails, resolves the queries autonomously	 starting  at  the  root  name
       servers, using a compiled-in list of root-server hints.

   Options
       Use	 config-file as the configuration file.	 The default is

       Set the debug level to
		 debuglevel.  Debugging traces from become more verbose as the
		 debug level increases.

       Run	 in the foreground.

       Run	 in the foreground and force all logging to standard error.

       Write the daemon's process ID to
		 pid-file.  The default is

       Create	 ncpus worker threads to take advantage of multiple CPUs.   By
		 default,  tries  to  determine the number of CPUs present and
		 creates one thread per CPU.  If it cannot determine the  num‐
		 ber of CPUs, it creates a single worker thread.

       Send DNS lookups to port number
		 query-port  when  querying name servers.  This provides a way
		 of testing the lightweight resolver daemon with a name server
		 that listens for queries on a nonstandard port number.

       Listen for lightweight resolver queries on the
		 loopback  interface  using UDP port number port.  The default
		 is port 921.

       Write memory usage statistics to standard output on exit.
		 This option is only of interest to BIND 9 developers and  may
		 be removed or changed in a future release.

       Change root to
		 directory  immediately	 after	reading the configuration file
		 (see chroot(2)).

       Run as	 user-id, which is a user name or  numeric  ID	that  must  be
		 present  in  the password file.  changes its user-id after it
		 has carried out any privileged operations,  such  as  writing
		 the  process-ID file or binding a socket to a privileged port
		 (typically any port less than 1024).

   Note
       is a daemon for lightweight resolvers, not  a  lightweight  daemon  for
       resolvers.

AUTHOR
       was developed by the Internet Systems Consortium (ISC).

FILES
       Default resolver configuration file

       Default process-id file

SEE ALSO
       named(1M), chroot(2).

       available online at

       available from the Internet Systems Consortium at

				   BIND 9.3			    lwresd(1M)
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