He intentado hacer un servidor dns, pero cuando hago el comando de excavación, el servidor no devuelve nada. No he tenido ninguna experiencia previa y solo estoy siguiendo este tutorial: http://www.itzgeek.com/how-tos/linux/centos-how-tos/configure-dns-bind-server-on-centos-7-rhel-7.html .
archivo named.conf:
//
// 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;192.168.38.103; };
listen-on-v6 port 53 { ::1; };
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; 192.168.38.0/24; };
/*
- 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";
};
zone "dynavio.coop" IN {
type master;
file "fwd.dynavio.coop.db";
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";
};
zone "dynavio.coop" IN {
type master;
file "fwd.dynavio.coop.db";
allow-update { none; };
};
zone "38.168.192.in-addr.arpa" IN {
type master;
file "38.168.192.db";
allow-update { none; };
};
include "/etc/named.rfc1912.zones";
include "/etc/named.root.key";
Archivo fwd.dynavio.coop.db:
$TTL 86400
@ IN SOA primary.dynavio.coop. root.dynavio.coop. (
2014112511 ;Serial
3600 ;Refresh
1800 ;Retry
604800 ;Expire
86400 ;MinimumTTL
)
;Name Server Information
@ IN NS primary.dynavio.coop.
;IP Address of Name Server
primary IN A 192.168.38.8
;Mail exchanger
dynavio.coop. IN MX 10 mail.dynavio.coop.
;A - Record HostName To Ip Address
www IN A 192.168.38.100
mail IN A 192.168.38.150
;CNAME record
ftp IN CNAME www.dynavio.coop.
Archivo 38.168.192.db:
$TTL 86400
@ IN SOA primary.dynavio.coop. root.dynavio.coop. (
2014112511 ;Serial
3600 ;Refresh
1800 ;Retry
604800 ;Expire
86400 ;Minimum TTL
)
;Name Server Information
@ IN NS primary.dynavio.coop.
;Reverse lookup for Name Server
8 IN PTR primary.dynavio.coop.
;PTR Record IP address to HostName
100 IN PTR www.dynavio.coop.
150 IN PTR mail.dynavio.coop.
Devuelve el comando de excavación:
; <<>> DiG 9.9.4-RedHat-9.9.4-18.el7_1.5 <<>> www.dynavio.coop
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 43498
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
;; QUESTION SECTION:
;www.dynavio.coop. IN A
;; AUTHORITY SECTION:
coop. 1272 IN SOA coop1.dyntld.net. support.nic.coop. 2015099691 900 1800 6048000 3600
;; Query time: 3 msec
;; SERVER: 192.168.38.1#53(192.168.38.1)
;; WHEN: Mon Dec 07 16:36:55 EET 2015
;; MSG SIZE rcvd: 98
Actualizar: Parece que el problema es con /etc/resolv.conf
se sobrescribe cada vez que se reinicia el administrador de red. Actualizaré esto de nuevo más tarde cuando pueda obtener el archivo if-cfg.
host -v -a -l dynavio.coop
y vea lo que dice (si corresponde) También parece que su nombre de dominio no está registrado.[test@server ~]# whois dynavio.coop [Querying whois.nic.coop] [whois.nic.coop] DOMAIN NOT FOUND