Configuring and Managing MPE/iX Internet Services (MPE/iX 6.0)
172 Appendix C
BIND 8.1 Enhanced Features
BIND 8 Highlights
fail Names are checked against their expected client
contexts. Invalid names are logged, and the offending
data is rejected.
The server can check names in three areas; master zone files, slave zone
files, and in responses to queries the server has initiated. If
check-names response fail has been specified, and answering the
client’s question would require sending an invalid name to the client,
the server will send a REFUSED response code to the client.
The defaults are:
check-names master fail;
check-names slave warn;
check-names response ignore;
check-names may also be specified in the zone statement, in which
case it overrides the options check-names statement. When used in a
zone statement, the area is not specified (because it can be deduced
from the zone type).
Access Control Access to the server can be restricted based on the IP address of the
requesting system. See address_match_list for details on how to
specify IP address lists.
allow-query Specifies which hosts are allowed to ask ordinary
questions. allow-query may also be specified in the
zone statement, in which case it overrides the options
allow-query statement. If not specified, the default is
to allow queries from all hosts.
allow- transfer Specifies which hosts are allowed to receive zone
transfers from the server. allow-transfer may also
be specified in the zone statement, in which case it
overrides the options allow-transfer statement. If
not specified, the default is to allow transfers from all
hosts.
Interfaces The interfaces and ports that the server will answer queries from may
be specified using the listen-on option. listen-on takes an optional
port, and an address_match_list. The server will listen on all
interfaces allowed by the address match list. If a port is not specified,
port 53 will be used.
Multiple listen-on statements are allowed. For example:
listen-on { 5.6.7.8; };
listen-on port 1234 { !1.2.3.4; 1.2/16; };
If no listen-on is specified, the server will listen on port 53 on all
interfaces.