|
|
|
diff --git a/bin/named/named.8 b/bin/named/named.8
|
|
|
|
index cd990a9..890be36 100644
|
|
|
|
--- a/bin/named/named.8
|
|
|
|
+++ b/bin/named/named.8
|
|
|
|
@@ -358,6 +358,57 @@ The default configuration file\&.
|
|
|
|
/var/run/named/named\&.pid
|
|
|
|
.RS 4
|
|
|
|
The default process\-id file\&.
|
|
|
|
+.PP
|
|
|
|
+.SH "NOTES"
|
|
|
|
+.PP
|
|
|
|
+.TP
|
|
|
|
+\fBRed Hat SELinux BIND Security Profile:\fR
|
|
|
|
+.PP
|
|
|
|
+By default, Red Hat ships BIND with the most secure SELinux policy
|
|
|
|
+that will not prevent normal BIND operation and will prevent exploitation
|
|
|
|
+of all known BIND security vulnerabilities . See the selinux(8) man page
|
|
|
|
+for information about SElinux.
|
|
|
|
+.PP
|
|
|
|
+It is not necessary to run named in a chroot environment if the Red Hat
|
|
|
|
+SELinux policy for named is enabled. When enabled, this policy is far
|
|
|
|
+more secure than a chroot environment. Users are recommended to enable
|
|
|
|
+SELinux and remove the bind-chroot package.
|
|
|
|
+.PP
|
|
|
|
+With this extra security comes some restrictions:
|
|
|
|
+.PP
|
|
|
|
+By default, the SELinux policy does not allow named to write any master
|
|
|
|
+zone database files. Only the root user may create files in the $ROOTDIR/var/named
|
|
|
|
+zone database file directory (the options { "directory" } option), where
|
|
|
|
+$ROOTDIR is set in /etc/sysconfig/named.
|
|
|
|
+.PP
|
|
|
|
+The "named" group must be granted read privelege to
|
|
|
|
+these files in order for named to be enabled to read them.
|
|
|
|
+.PP
|
|
|
|
+Any file created in the zone database file directory is automatically assigned
|
|
|
|
+the SELinux file context named_zone_t .
|
|
|
|
+.PP
|
|
|
|
+By default, SELinux prevents any role from modifying named_zone_t files; this
|
|
|
|
+means that files in the zone database directory cannot be modified by dynamic
|
|
|
|
+DNS (DDNS) updates or zone transfers.
|
|
|
|
+.PP
|
|
|
|
+The Red Hat BIND distribution and SELinux policy creates three directories where
|
|
|
|
+named is allowed to create and modify files: /var/named/slaves, /var/named/dynamic
|
|
|
|
+/var/named/data. By placing files you want named to modify, such as
|
|
|
|
+slave or DDNS updateable zone files and database / statistics dump files in
|
|
|
|
+these directories, named will work normally and no further operator action is
|
|
|
|
+required. Files in these directories are automatically assigned the 'named_cache_t'
|
|
|
|
+file context, which SELinux allows named to write.
|
|
|
|
+.PP
|
|
|
|
+\fBRed Hat BIND SDB support:\fR
|
|
|
|
+.PP
|
|
|
|
+Red Hat ships named with compiled in Simplified Database Backend modules that ISC
|
|
|
|
+provides in the "contrib/sdb" directory. Install bind-sdb package if you want use them
|
|
|
|
+.PP
|
|
|
|
+The SDB modules for LDAP, PostGreSQL, DirDB and SQLite are compiled into named-sdb.
|
|
|
|
+.PP
|
|
|
|
+See the documentation for the various SDB modules in /usr/share/doc/bind-sdb-*/ .
|
|
|
|
+.br
|
|
|
|
+.PP
|
|
|
|
.RE
|
|
|
|
.SH "SEE ALSO"
|
|
|
|
.PP
|