PythonQ 248-8XX Instalační příručka stáhnout pdf (Strana 231)

Chapter 16. Berkeley Internet Name Domain (BIND) 231

The /etc/named.conf ﬁle must be free of errors in order for named to start. While some erroneous

options are not considered critical enough to stop the server, any errors in the statements themselves

will prevent the named service from starting.

Warning

Do not manually edit the /etc/named.conf ﬁle or any ﬁles in the /var/named/ directory if you are

using the Bind Conﬁguration Tool. Any manual changes to those ﬁles will be overwritten the next

time the Bind Conﬁguration Tool is used.

16.2.1. /etc/named.conf

The /etc/named.conf ﬁle is a collection of statements using nested options placed in ellipses { }.

A sample /etc/named.conf ﬁle is organized similar to this:

statement-1 [" statement-1-name "] [ statement-1-class ] {

option-1 ;

option-2 ;

option-N ;

};

statement-2 [" statement-2-name "] [ statement-2-class ] {

option-1 ;

option-2 ;

option-N ;

};

statement-N [" statement-N-name "] [ statement-N-class ] {

option-1 ;

option-2 ;

option-N ;

};

The statement-N-name is only needed with acl, include, server, view, and zone state-

ments. The

statement-N-class may only be speciﬁed with the zone statement.

The following is a list of valid comment tags you may use within /etc/named.conf:

• // — Use at the begining of a line comment that line.

• # — Use at the begining of a line comment that line.

• /* and */ — Enclose text in these tags to create a block comment.

The following statements may be used in /etc/named.conf:

• acl acl-name 4 — Conﬁgures an access control list of IP addresses to be allowed or disal-

lowed certain named services. Most of the time, individual IP addresses or IP network notation

(such as 10.0.1.0/24) is used identify the exact IP addresses.

A few access control lists are already deﬁned, so you do not have to conﬁgure an acl statement to

deﬁne them:

• any — Matches every IP address.

• localhost — Matches any IP address in use by the local system.

• localnets — Matches any IP address on any network to which the local system is connected .

• none — Matches no IP addresses.

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PythonQ 248-8XX Instalační příručka Strana 231

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