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Full Discussion: DNS daemons
Special Forums IP Networking DNS daemons Post 11116 by eNTer on Thursday 29th of November 2001 06:51:45 AM
Old 11-29-2001
DNS Daemon [bind]

Hi! There is a security problem with some versions of the name daemon, in some cases this daemon gives root access to someone which uses an exploit remotely. To avoid such things you must start bind in a sandbox, chrooted, or as a user which does not have high priviledhes in the system. so, the command line becomes [for most systems]:
# named -u daemon
For a FreeBSD machine the command line is
# named -u bind -g bind if you changed /etc/rc.conf and have specified named_flags="-u bind -g bind" and if you have specified to start the named at boot time with the following line in /etc/rc.conf: named_enable="YES", and in the /etc/named.conf you should specify that the directory is /etc/namedb.
 

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NAMED-CHECKCONF(8)						       BIND9							NAMED-CHECKCONF(8)

NAME
named-checkconf - named configuration file syntax checking tool SYNOPSIS
named-checkconf [-h] [-v] [-j] [-t directory] {filename} [-p] [-z] DESCRIPTION
named-checkconf checks the syntax, but not the semantics, of a named configuration file. The file is parsed and checked for syntax errors, along with all files included by it. If no file is specified, /etc/named.conf is read by default. Note: files that named reads in separate parser contexts, such as rndc.key and bind.keys, are not automatically read by named-checkconf. Configuration errors in these files may cause named to fail to run, even if named-checkconf was successful. named-checkconf can be run on these files explicitly, however. OPTIONS
-h Print the usage summary and exit. -t directory Chroot to directory so that include directives in the configuration file are processed as if run by a similarly chrooted named. -v Print the version of the named-checkconf program and exit. -p Print out the named.conf and included files in canonical form if no errors were detected. -z Perform a test load of all master zones found in named.conf. -j When loading a zonefile read the journal if it exists. filename The name of the configuration file to be checked. If not specified, it defaults to /etc/named.conf. RETURN VALUES
named-checkconf returns an exit status of 1 if errors were detected and 0 otherwise. SEE ALSO
named(8), named-checkzone(8), BIND 9 Administrator Reference Manual. AUTHOR
Internet Systems Consortium COPYRIGHT
Copyright (C) 2004, 2005, 2007, 2009 Internet Systems Consortium, Inc. ("ISC") Copyright (C) 2000-2002 Internet Software Consortium. BIND9 June 14, 2000 NAMED-CHECKCONF(8)
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