79 lines
3.4 KiB
Diff
79 lines
3.4 KiB
Diff
--- bind-9.3.1/bin/named/named.8.redhat_doc 2004-06-03 01:35:47.000000000 -0400
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+++ bind-9.3.1/bin/named/named.8 2005-05-17 21:22:25.000000000 -0400
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@@ -164,6 +164,75 @@
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.TP
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\fB\fI/var/run/named.pid\fB\fR
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The default process-id file.
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+.PP
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+.SH "NOTES"
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+.PP
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+.TP
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+\fBRed Hat SELinux BIND Security Profile:\fR
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+.PP
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+By default, Red Hat ships BIND with the most secure SELinux policy
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+that will not prevent normal BIND operation and will prevent exploitation
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+of all known BIND security vulnerabilities . See the selinux(8) man page
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+for information about SElinux.
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+.PP
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+It is not necessary to run named in a chroot environment if the Red Hat
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+SELinux policy for named is enabled. When enabled, this policy is far
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+more secure than a chroot environment. Users are recommended to enable
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+SELinux and remove the bind-chroot package.
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+.PP
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+With this extra security comes some restrictions:
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+.PP
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+By default, the SELinux policy does not allow named to write any master
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+zone database files. Only the root user may create files in the $ROOTDIR/var/named
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+zone database file directory (the options { "directory" } option), where
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+$ROOTDIR is set in /etc/sysconfig/named.
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+.PP
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+The "named" group must be granted read privelege to
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+these files in order for named to be enabled to read them.
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+.PP
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+Any file created in the zone database file directory is automatically assigned
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+the SELinux file context named_zone_t .
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+.PP
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+By default, SELinux prevents any role from modifying named_zone_t files; this
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+means that files in the zone database directory cannot be modified by dynamic
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+DNS (DDNS) updates or zone transfers.
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+.PP
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+The Red Hat BIND distribution and SELinux policy creates two directories where
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+named is allowed to create and modify files: $ROOTDIR/var/named/slaves and
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+$ROOTDIR/var/named/data. By placing files you want named to modify, such as
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+slave or DDNS updateable zone files and database / statistics dump files in
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+these directories, named will work normally and no further operator action is
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+required. Files in these directories are automatically assigned the 'named_cache_t'
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+file context, which SELinux allows named to write.
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+.PP
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+You can enable the named_t domain to write and create named_zone_t files by use
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+of the SELinux tunable boolean variable "named_write_master_zones", using the
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+setsebool(8) command or the system-config-security GUI . If you do this, you
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+must also set the ENABLE_ZONE_WRITE variable in /etc/sysconfig/named to
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+1 / yes to set the ownership of files in the $ROOTDIR/var/named directory
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+to named:named in order for named to be allowed to write them.
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+.PP
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+\fBRed Hat BIND named_sdb SDB support:\fR
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+.PP
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+Red Hat ships the bind-sdb RPM that provides the /usr/sbin/named_sdb program,
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+which is named compiled with the Simplified Database Backend modules that ISC
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+provides in the "contrib/sdb" directory.
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+.PP
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+The SDB modules for LDAP, PostGreSQL and DirDB are compiled into named_sdb.
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+.PP
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+To run named_sdb, set the ENABLE_SDB variable in /etc/sysconfig/named to 1 or "yes",
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+and then the "service named start" named initscript will run named_sdb instead
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+of named .
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+.PP
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+See the documentation for the various SDB modules in /usr/share/doc/bind-sdb-*/ .
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+.br
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+.PP
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+\fBRed Hat system-config-bind:\fR
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+.PP
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+Red Hat provides the system-config-bind GUI to configure named.conf and zone
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+database files. Run the "system-config-bind" command and access the manual
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+by selecting the Help menu.
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+.PP
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.SH "SEE ALSO"
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.PP
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\fIRFC 1033\fR,
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