lwresd(1m) [hpux man page]

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 lightweight resolver protocol rather than the DNS protocol.

       listens for resolver queries on a UDP port on the IPv4 loopback interface, 127.0.0.1.  This means that can only be used by  processes  run-
       ning 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 number 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)

named(1M)						  System Administration Commands						 named(1M)

NAME

       named - Internet domain name server

SYNOPSIS

       named [-fgsv] [-c config-file] [-d debug-level] [-n #cpus] [-p port] [-t directory] [-u user] [-x cache-file]

DESCRIPTION

       The named utility is a Domain Name System (DNS) server, part of the BIND 9 distribution from ISC. For more information on the DNS, see RFCs
       1033, 1034, and 1035.

       When invoked without arguments, named reads the default configuration file  /etc/named.conf,  reads  any  initial  data,  and  listens  for
       queries.

OPTIONS

       The following options are supported:

       -c config-file  Use  config-file  as the configuration file instead of the default /etc/named.conf. To ensure that reloading the configura-
		       tion file continues to work after the server has changed its working directory due to to a possible directory option in the
		       configuration file, config-file should be an absolute pathname.

       -d debug-level  Set the daemon's debug level to debug-level. Debugging traces from named become more verbose as the debug level increases.

       -f	       Run the server in the foreground (that is, do not daemonize).

       -g	       Run the server in the foreground and force all logging to stderr.

       -n #cpus        Create #cpus worker threads to take advantage of multiple CPUs. If not specified, named will try to determine the number of
		       CPUs present and create one thread per CPU. If it is unable to determine the number of CPUs, a single worker thread will be
		       created.

       -p port	       Listen for queries on port port. If not specified, the default is port 53.

       -s	       Write memory usage statistics to stdout on exit.

		       This option is mainly of interest to BIND 9 developers and might be removed or changed in a future release.

       -t directory    Change  the root directory using chroot(2) to directory after processing the command line arguments, but before reading the
		       configuration file.

		       This option should be used in conjunction with the -u option, as chrooting a process running as root doesn't enhance  secu-
		       rity on most systems; the way chroot() is defined allows a process with root privileges to escape a chroot jail.

       -u user	       Set  the  real user ID using setuid(2) to user after completing privileged operations, such as creating sockets that listen
		       on privileged ports.

		       On Linux, named uses the kernel's capability mechanism to drop all root privileges except the ability to use  bind(3SOCKET)
		       to  bind to a privileged port and set process resource limits. Unfortunately, this means that the -u option works only when
		       named is run on kernel 2.2.18 or later, or kernel 2.3.99-pre3 or later, since previous kernels did not allow privileges	to
		       be retained after setuid().

       -v	       Report the version number and exit.

       -x cache-file   Load data from cache-file into the cache of the default view.

		       This  option  must  not	be  used.  It is of interest only to BIND 9 developers and might be removed or changed in a future
		       release.

SIGNALS

       In routine operation, signals should not be used to control the nameserver; rndc(1M) should be used instead.

       SIGHUP		       Force a reload of the server.

       SIGINT, SIGTERM	       Shut down the server.

       The result of sending any other signals to the server is undefined.

CONFIGURATION

       The named configuration file is too complex to describe in detail here. A complete description is provided in the BIND 9 Administrator Ref-
       erence Manual.

FILES

       /etc/named.conf	       default configuration file

       /var/run/named.pid      default process-ID file

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       |Availability		     |SUNWbind9 		   |
       |Interface Stability	     |External			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       rndc(1M), chroot(2), setuid(2), bind(3SOCKET), attributes(5)

       RFC 1033, RFC 1034, RFC 1035

       BIND 9 Administrator Reference Manual

NOTES

       Source for BIND9 is available in the SUNWbind9S package.

SunOS 5.10							    15 Dec 2004 							 named(1M)