Novell LINUX ENTERPRISE SERVER 10 - INSTALLATION AND ADMINISTRATION 11-05-2007, Installation Manual

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127.0.0.1
to permit requests from the local host. If you omit this entry entirely,
all interfaces are used by default.
listen-on-v6 port 53 {any; };
Tells BIND on which port it should listen for IPv6 client requests. The only alter-
native to
any
is
none
. As far as IPv6 is concerned, the server only accepts a wild
card address.
query-source address * port 53;
This entry is necessary if a firewall is blocking outgoing DNS requests. This tells
BIND to post requests externally from port 53 and not from any of the high ports
above 1024.
query-source-v6 address * port 53;
Tells BIND which port to use for IPv6 queries.
allow-query { 127.0.0.1;
net
; };
Defines the networks from which clients can post DNS requests. Replace
net
with
address information like
192.168.1/24
. The
/24
at the end is an abbreviated
expression for the netmask, in this case,
255.255.255.0
.
allow-transfer ! *;;
Controls which hosts can request zone transfers. In the example, such requests are
completely denied with
! *
. Without this entry, zone transfers can be requested
from anywhere without restrictions.
statistics-interval 0;
In the absence of this entry, BIND generates several lines of statistical information
per hour in
/var/log/messages
. Set it to 0 to suppress these statistics com-
pletely or set an interval in minutes.
cleaning-interval 720;
This option defines at which time intervals BIND clears its cache. This triggers an
entry in
/var/log/messages
each time it occurs. The time specification is in
minutes. The default is 60 minutes.
interface-interval 0;
BIND regularly searches the network interfaces for new or nonexistent interfaces.
If this value is set to
0
, this is not done and BIND only listens at the interfaces de-
tected at start-up. Otherwise, the interval can be defined in minutes. The default is
sixty minutes.
624 Installation and Administration