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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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svc.conf(5)							File Formats Manual						       svc.conf(5)

Name
       svc.conf - database service selection and security configuration file

Description
       The  file  is a mandatory system file that allows you to select the desired services on a per database basis.  It also allows you to select
       security parameters.  The default file has as the service selected for each database.  This file must be modified when adding or removing a
       naming  service,  such  as Yellow Pages or BIND/Hesiod.	The valid services are and Modifications to the file can be made with an editor or
       the command for database service selection.  They can be made with the command for security parameter selection.  Changes take effect imme-
       diately.  The recommended configuration is that you have as the first entry for all databases.

Restrictions
       White space is allowed only after commas or newlines.

       You must have as the first entry for the and databases.

       You must have as the entry for the database.

       You must have either or as the entry for the database.

Examples
       The  following  is a sample file: aliases=yp auth=local,bind group=local,yp hosts=local,bind,yp netgroup=yp networks=bind passwd=local,bind
       protocols=local,bind rpc=local,bind services=local

       PASSLENMIN=6 PASSLENMAX=16 SOFTEXP=604800	 # 7 days in seconds SECLEVEL=BSD	    # (BSD | UPGRADE | ENHANCED)

Files
See Also
       getsvc(3), svcsetup(8)
       Guide to the BIND/Hesiod Service
       Guide to the Yellow Pages Service

																       svc.conf(5)
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