named.confファイルを編集してBINDの設定を行います。
vi /var/named/chroot/etc/named.conf
[bash title=”named.conf” highlight=”11,12,17,18,19,20″]
//
// named.conf
//
// Provided by Red Hat bind package to configure the ISC BIND named(8) DNS
// server as a caching only nameserver (as a localhost DNS resolver only).
//
// See /usr/share/doc/bind*/sample/ for example named configuration files.
//
options {
# listen-on port 53 { 127.0.0.1; }; インタフェースとポートを明示的に指定する必要なし
# listen-on-v6 port 53 { ::1; }; IPv6の設定は不要
directory "/var/named";
dump-file "/var/named/data/cache_dump.db";
statistics-file "/var/named/data/named_stats.txt";
memstatistics-file "/var/named/data/named_mem_stats.txt";
# allow-query { localhost; };
allow-query { localhost; localnets; }; # BINDが動作しているサーバが所属するセグメント全てから許可
forwarders { 192.168.0.1; }; # 解決できない問い合わせの転送先(ルーター)
version ""; # バージョンを隠す
/*
– If you are building an AUTHORITATIVE DNS server, do NOT enable recursion.
– If you are building a RECURSIVE (caching) DNS server, you need to enable
recursion.
– If your recursive DNS server has a public IP address, you MUST enable access
control to limit queries to your legitimate users. Failing to do so will
cause your server to become part of large scale DNS amplification
attacks. Implementing BCP38 within your network would greatly
reduce such attack surface
*/
recursion yes;
dnssec-enable yes;
dnssec-validation yes;
dnssec-lookaside auto;
/* Path to ISC DLV key */
bindkeys-file "/etc/named.iscdlv.key";
managed-keys-directory "/var/named/dynamic";
pid-file "/run/named/named.pid";
session-keyfile "/run/named/session.key";
};
logging {
channel default_debug {
file "data/named.run";
severity dynamic;
};
};
zone "." IN {
type hint;
file "named.ca";
};
include "/etc/named.rfc1912.zones";
include "/etc/named.root.key";
[/bash]
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