DNSソスTソス[ソスoソス[ソス\ソスz(BIND)

ソスナ終ソスXソスVソスソスソスF 2023.02.23

ソスソスソスTソスv

DNSソスTソス[ソスoソス[(BIND)ソスソスcentossrv.comソスニゑソスソスソスソスhソスソスソスCソスソスソスソスソスソスソスソスIPソスAソスhソスソスソスXソスソスヤゑソスソスソスソスソスAIPソスAソスhソスソスソスXソスソスソスソスhソスソスソスCソスソスソスソスソスソスヤゑソスソスTソス[ソスoソス[ソスB
ソスソスソスソスソスナは、ソスソスソスソスソスナサソス[ソスoソス[ソスノアソスNソスZソスXソスソスソスソスニゑソスソスソスIPソスAソスhソスソスソスXソスナはなゑソスソスAcentossrv.comソスナアソスNソスZソスXソスナゑソスソスソス謔、ソスノゑソスソスソスBソスヒ難ソスソスソスソスソスソスソスDNSソスTソス[ソスoソス[
ソスワゑソスソスAソスOソスソスソスソスソスソスTソス[ソスoソス[ソスノアソスNソスZソスXソスソスソスソスニゑソスソスフ趣ソスソスhソスソスソスCソスソスソスソスソスソスソスソスIPソスAソスhソスソスソスXソスヨの変奇ソス(ソスソスソスOソスソスソスソス)ソスソスソスsソスネゑソスソス謔、ソスノゑソスソスソスBソスヒ外ソスソスソスソスソスソスDNSソスTソス[ソスoソス[
ソスOソスソスソスソスソスソスDNSソスTソス[ソスoソス[ソスン抵ソスノゑソスソスAソスソスソスソスTソス[ソスoソス[ソスソスソスメ難ソスソスソスソスノゑソスソスWソスソス轤クソスAソス_ソスCソスiソス~ソスbソスNDNSソスTソス[ソスrソスXソスソスソスソスソスロ趣ソスソスgソスソスソスuソスソスソスソスソスノゑソスソスTソス[ソスrソスXソスソス~ソスソスソスソスソスソスソスニにゑソスソスhソスソスソスCソスソスソスソスソスナサソス[ソスoソス[ソスノアソスNソスZソスXソスナゑソスソスネゑソスソスネゑソスニゑソスソスソスソスソスソスニゑソスソスネゑソスソスネゑソスB

ソスソスソスソスナ抵ソスIPソスAソスhソスソスソスXソスツ具ソスソスフ場合ソスソスソスTソスuソスhソスソスソスCソスソスソス謫セソスマでゑソスソス驍アソスソス
ソスソスソスナ抵ソスIPソスAソスhソスソスソスXソスツ具ソスソスフ場合ソスソスソスニ趣ソスソスhソスソスソスCソスソスソス謫セソスマでゑソスソス驍アソスソス
ソスソスソスOソスソスソスソスソスソスDNSソスTソス[ソスoソス[ソスヘ固抵ソスIPソスAソスhソスソスソスXソスツ具ソスソスフ場合ソスフゑソス
ソスソスcentossrv.comソスヘ難ソスソスTソスCソスgソスフ暦ソスネので、ソスeソスソスソスナ置ソスソスソスソスソスソスソス驍アソスニ!


ソスソスBINDソスCソスソスソスXソスgソス[ソスソス

[root@centos ~]# yum -y install bind bind-chrootソス@ソスソスソス@bind,bind-chrootソスCソスソスソスXソスgソス[ソスソス

ソスソスBINDソスン抵ソス

ソスiソスPソスjBINDソスン抵ソス
[root@centos ~]# vi /etc/named.confソス@ソスソスソス@BINDソスン抵ソスtソス@ソスCソスソスソスメ集
options {
        #listen-on port 53 { 127.0.0.1; };ソス@ソスソスソス@ソスsソスソスソスソス#ソスソスヌ会ソスソスソスソストコソスソスソスソスソスgソスAソスEソスg
        #listen-on-v6 port 53 { ::1; };ソス@ソスソスソス@ソスsソスソスソスソス#ソスソスヌ会ソスソスソスソストコソスソスソスソスソスgソスAソスEソスg
        version         "unknown";ソス@ソスソスソス@bindソスフバソス[ソスWソスソスソスソスソスソスソスフ費ソス\ソスソスソスソス
        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-transfer { none; };ソス@ソスソスソス@ソスヌ会ソス(ソス]ソス[ソスソスソスソスソスフ転ソスソスソスソスソスヨ止)
        secroots-file   "/var/named/data/named.secroots";
        recursing-file  "/var/named/data/named.recursing";

        /*
         - 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;
        allow-query     { localhost; localnets; };ソス@ソスソスソス@ソスソスソスソスソスソスソスソスフみ問合ソスソスソスソスソスソスソスソス
        allow-recursion { localhost; localnets; };ソス@ソスソスソス@ソスソスソスソスソスソスソスソスフみ再帰ソス竝ソスソスソスソスソスソスソスソス
        allow-query-cache { localhost; localnets; };ソス@ソスソスソス@ソスソスソスソスソスソスソスソスフみキソスソスソスbソスVソスソスソス竝ソスソスソスソスソスソスソスソス
        forwarders{ 8.8.8.8; 8.8.4.4; };ソス@ソスソスソス@ソス{DNSソスTソス[ソスoソス[ソスヌ暦ソスソスOソスフ問合ソスソスソスソスニゑソスソスソスGoogleソスフ鯉ソスソスJDNSソスTソス[ソスoソス[ソスソスソスwソスソス

        dnssec-enable yes;
        dnssec-validation yes;

        managed-keys-directory "/var/named/dynamic";

        pid-file "/run/named/named.pid";
        session-keyfile "/run/named/session.key";

        /* https://fedoraproject.org/wiki/Changes/CryptoPolicy */
        include "/etc/crypto-policies/back-ends/bind.config";
};

logging {
        channel default_debug {
                file "data/named.run";
                severity dynamic;
        };
        category lame-servers { null; };ソス@ソスソスソス@ソスヌ会ソス(error (connection refused) resolvingソスニゑソスソスソスソスGソスソスソス[ソスソスソスOソスフ出ソスヘ抑ソス~)
};

ソスヌ会ソス(ソスソスソスソスソスソスソスソス)
// ソスソスソスソスソスソスソスソスソスン抵ソスJソスn
view "internal" {
        match-clients { localnets; };
        match-destinations { localnets; };
ソスヌ会ソス(ソスソスソスソスソスワゑソス)

zone "." IN {
        type hint;
        file "named.ca";
};

include "/etc/named.rfc1912.zones";
include "/etc/named.root.key";

ソスヌ会ソス(ソスソスソスソスソスソスソスソス)
        include "/etc/named/named.centossrv.com.zone";
};
// ソスソスソスソスソスソスソスソスソスン抵ソスIソスソス
ソスヌ会ソス(ソスソスソスソスソスワゑソス)

ソスナ終ソスsソスヨ追会ソス(ソスソスソスソスソスソスソスソス)ソスソスソスナ抵ソスIPソスAソスhソスソスソスXソスツ具ソスソスフ場合ソスフゑソス
// ソスOソスソスソスソスソスソスソスン抵ソスJソスn
view "external" {
        // ソスOソスソスソスソスソスソスソスン抵ソス
        match-clients { any; };
        match-destinations { any; };
        include "/etc/named/named.centossrv.com.zone.wan";
};
// ソスOソスソスソスソスソスソスソスン抵ソスIソスソス
ソスナ終ソスsソスヨ追会ソス(ソスソスソスソスソスワゑソス)

[root@centos ~]# vi /etc/named/named.centossrv.com.zoneソス@ソスソスソス@centossrv.comソスフ難ソスソスソスソスソスソスソスソス]ソス[ソスソスソスソス`ソスtソス@ソスCソスソスソス成
zone "centossrv.com" {
        type master;
        file "centossrv.com.db";
};
zone "1.168.192.in-addr.arpa" {
        type master;
        file "1.168.192.in-addr.arpa.db";
};

[root@centos ~]# vi /etc/named/named.centossrv.com.zone.wanソス@ソスソスソス@centossrv.comソスフ外ソスソスソスソスソスソスソス]ソス[ソスソスソスソス`ソスtソス@ソスCソスソスソス成ソスソスソスナ抵ソスIPソスAソスhソスソスソスXソスツ具ソスソスフ場合ソスフゑソス
// ソスソスソスソスソスソスソスン抵ソス
zone "centossrv.com" {
        type master;
        file "centossrv.com.db.wan";
        allow-query { any; };
};
// ソスtソスソスソスソスソスン抵ソスソスソスソスvソスソスソスoソスCソス_ソスiソスソスソスTソスCソスgソスナゑソスGMOソスニゑソスソスニゑソスBBソスjソスソスソスtソスソスソスソスソスソスソスソスソスソスソスマ擾ソスソスソスソスソストゑソスソスソス鼾ソスフゑソス
zone "SUBxxx.xxx.xxx.xxx.in-addr.arpa" {ソスソスxxx.xxx.xxx.xxxソスヘサソス[ソスoソス[ソスフグソスソスソス[ソスoソスソスIPソスAソスhソスソスソスXソスソスソスtソスノ擾ソスソスソス(ソスソスF1.2.3.4ソスフ場合ソスソスSUB4.3.2.1.in-addr.arpa)
        type master;
        file "SUBxxx.xxx.xxx.xxx.in-addr.arpa.db.wan";ソスソスxxx.xxx.xxx.xxxソスヘサソス[ソスoソス[ソスフグソスソスソス[ソスoソスソスIPソスAソスhソスソスソスXソスソスソスtソスノ擾ソスソスソス(ソスソスF1.2.3.4ソスフ場合ソスソスSUB4.3.2.1.in-addr.arpa)
        allow-query { any; };
};

[root@centos ~]# echo OPTIONS="-4" >> /etc/sysconfig/named ソス@ソスソスソス@IPv4ソスフみ有ソスソスソスノゑソスソスソス(error (network unreachable) resolvingソスニゑソスソスソスソスGソスソスソス[ソスソスソスOソスフ出ソスヘ抑ソス~)

ソスiソスQソスjソスソスソス[ソスgソス]ソス[ソスソスソスナ新ソスソス
ソスソスソス[ソスgソス]ソス[ソスソスソスヘ撰ソスソスEソスソス13ソス艪オソスソスソスネゑソスソスgソスbソスvソスソスソスxソスソスソスhソスソスソスCソスソスソスソスソスヌ暦ソスソスソスソスソスDNSソスTソス[ソスoソス[ソスソスIPソスAソスhソスソスソスXソスソスソスヌ暦ソスソスソスソストゑソスソスソスtソス@ソスCソスソスソスナ、ソス゚ゑソスソスソスソスノ更ソスVソスソスソスソス驍アソスニはなゑソスソスソスソスAソスOソスフゑソスソス゚最新ソスソスソスソスソストゑソスソスソスソスB
[root@centos ~]# dig . ns @198.41.0.4 +bufsize=1024 > /var/named/named.caソス@ソスソスソス@ソスソスソス[ソスgソス]ソス[ソスソス(named.ca)ソスナ新ソスソス

ソスiソスRソスjソスソスソス[ソスgソス]ソス[ソスソスソスソスソスソスソスXソスVソスン抵ソス
1ソスソスソスソスソスノ茨ソスxソスAソスソスソス[ソスgソス]ソス[ソスソスソスソスソスナ新ソスソスソス`ソスFソスbソスNソスソスソスAソスXソスVソスソスソスソストゑソスソスソスホソスソス[ソスgソス]ソス[ソスソスソスフ最新ソスソスソスyソスム、BINDソスフ再起ソスソスソスソスソスソスソスソスソスIソスノ行ソスソスソス謔、ソスノゑソスソスソスB
ソスソスソスソスソス[ソスgソス]ソス[ソスソスソスソスソスXソスVソスソスソスソストゑソスソスソスソス鼾ソスフみ、ソスVソスソスソスソスソス[ソスgソス]ソス[ソスソスソスソスソスyソスム、ソスVソスソスソスソスソス[ソスgソス]ソス[ソスソスソスフ搾ソスソスソスソスソスソスソスrootソスソスソスノソスソス[ソスソスソスソスソスソス
[root@centos ~]# vi /etc/cron.monthly/named.root_updateソス@ソスソスソス@ソスソスソス[ソスgソス]ソス[ソスソスソスソスソスソスソスソスソスソスソスナ新ソスソスソスXソスNソスソスソスvソスgソス成
#!/bin/bash

new=`mktemp`
errors=`mktemp`

dig . ns @198.41.0.4 +bufsize=1024 > $new 2> $errors

if [ $? -eq 0 ]; then
    sort_new=`mktemp`
    sort_old=`mktemp`
    diff_out=`mktemp`
    sort $new > $sort_new
    sort /var/named/named.ca > $sort_old
    diff --ignore-matching-lines=^\; $sort_new $sort_old > $diff_out
    if [ $? -ne 0 ]; then
        (
         echo '-------------------- old named.root --------------------'
         cat /var/named/named.ca
         echo
         echo '-------------------- new named.root --------------------'
         cat $new
         echo '---------------------- difference ----------------------'
         cat $diff_out
        ) | mail -s 'named.root updated' root
        cp -f $new /var/named/named.ca
        chown named. /var/named/named.ca
        chmod 644 /var/named/named.ca
        which systemctl > /dev/null 2>&1
        systemctl restart named-chroot > /dev/null
    fi
    rm -f $sort_new $sort_old $diff_out
else
    cat $errors | mail -s 'named.root update check error' root
fi
rm -f $new $errors

[root@centos ~]# chmod 700 /etc/cron.monthly/named.root_updateソス@ソスソスソス@ソスソスソス[ソスgソス]ソス[ソスソスソスソスソスソスソスソスソスソスソスナ新ソスソスソスXソスNソスソスソスvソスgソスヨ趣ソスソスsソスソスソスソスソスtソスソス

ソスiソスSソスjソスソスソスソスソスソスソスソスソスソスソスソスソスソスソス]ソス[ソスソスソスfソス[ソス^ソスxソス[ソスX(ソスhソスソスソスCソスソスソスソスソスソスIPソスAソスhソスソスソスX)ソス成
[root@centos ~]# vi /var/named/centossrv.com.dbソス@ソスソスソス@ソスソスソスソスソスソスソス]ソス[ソスソスソスfソス[ソス^ソスxソス[ソスXソス成
$TTL    86400
@       IN      SOA     centossrv.com.  root.centossrv.com.(
                                      2024122501 ; Serial
                                      28800      ; Refresh
                                      14400      ; Retry
                                      3600000    ; Expire
                                      86400 )    ; Minimum
        IN NS    centossrv.com.
        IN MX 10 centossrv.com.
@       IN A     192.168.1.3ソス@ソスソスソス@ソスTソス[ソスoソス[ソスフプソスソスソスCソスxソス[ソスgIPソスAソスhソスソスソスXソスソスソスwソスソス(centossrv.comソスp)
*       IN A     192.168.1.3ソス@ソスソスソス@ソスTソス[ソスoソス[ソスフプソスソスソスCソスxソス[ソスgIPソスAソスhソスソスソスXソスソスソスwソスソス(*.centossrv.comソスp)

ソスiソスTソスjソスソスソスソスソスソスソスソスソスtソスソスソスソスソス]ソス[ソスソスソスfソス[ソス^ソスxソス[ソスX(IPソスAソスhソスソスソスXソスヒドソスソスソスCソスソスソスソス)ソス成
[root@centos ~]# vi /var/named/1.168.192.in-addr.arpa.dbソス@ソスソスソス@ソスtソスソスソスソスソス]ソス[ソスソスソスfソス[ソス^ソスxソス[ソスXソス成
$TTL    86400
@       IN      SOA     centossrv.com.  root.centossrv.com.(
                                      2024122501 ; Serial
                                      28800      ; Refresh
                                      14400      ; Retry
                                      3600000    ; Expire
                                      86400 )    ; Minimum
              IN      NS    centossrv.com.
3             IN      PTR   centossrv.com.ソス@ソスソスソス@ソスTソス[ソスoソス[IPソスAソスhソスソスソスXソスナ会ソスソスハ包ソス(192.168.1.3)ソスニドソスソスソスCソスソスソスソスソスソスソスwソスソス

ソスiソスUソスjソスOソスソスソスソスソスソスソスソスソスソスソスソスソス]ソス[ソスソスソスfソス[ソス^ソスxソス[ソスX(ソスhソスソスソスCソスソスソスソスソスソスIPソスAソスhソスソスソスX)ソス成ソスソスソスナ抵ソスIPソスAソスhソスソスソスXソスツ具ソスソスフ場合ソスフゑソス
[root@centos ~]# vi /var/named/centossrv.com.db.wanソス@ソスソスソス@ソスOソスソスソスソスソスソスソスソスソスソスソスソスソス]ソス[ソスソスソスfソス[ソス^ソスxソス[ソスXソス成
$TTL    86400
@       IN      SOA     ns1.centossrv.com.  root.centossrv.com.(
                                      2024122501 ; Serial
                                      7200       ; Refresh
                                      7200       ; Retry
                                      2419200    ; Expire
                                      86400 )    ; Minimum
        IN NS    ns1.centossrv.com.ソス@ソスソスソス@ソスlソス[ソスソスソスTソス[ソスoソス[ソスソス
        IN MX 10 centossrv.com.ソス@ソスソスソス@MXソスzソスXソスgソスソス(ソスソスソス[ソスソスソスTソス[ソスoソス[ソスソスソス\ソスzソスソスソスソス鼾ソスフゑソス)
ns1     IN A     XXX.XXX.XXX.XXXソス@ソスソスソス@ソスTソス[ソスoソス[ソスフグソスソスソス[ソスoソスソスIPソスAソスhソスソスソスXソスソスソスwソスソス(ns1.centossrv.comソスp)
@       IN A     XXX.XXX.XXX.XXXソス@ソスソスソス@ソスTソス[ソスoソス[ソスフグソスソスソス[ソスoソスソスIPソスAソスhソスソスソスXソスソスソスwソスソス(centossrv.comソスp)
www     IN A     XXX.XXX.XXX.XXXソス@ソスソスソス@ソスTソス[ソスoソス[ソスフグソスソスソス[ソスoソスソスIPソスAソスhソスソスソスXソスソスソスwソスソス(www.centossrv.comソスp)
ftp     IN A     XXX.XXX.XXX.XXXソス@ソスソスソス@ソスTソス[ソスoソス[ソスフグソスソスソス[ソスoソスソスIPソスAソスhソスソスソスXソスソスソスwソスソス(ftp.centossrv.comソスp)
mail    IN A     XXX.XXX.XXX.XXXソス@ソスソスソス@ソスTソス[ソスoソス[ソスフグソスソスソス[ソスoソスソスIPソスAソスhソスソスソスXソスソスソスwソスソス(mail.centossrv.comソスp)
centossrv.com. IN TXT "v=spf1 ip4:XXX.XXX.XXX.XXX ~all"ソス@ソスソスソス@ソスTソス[ソスoソス[ソスフグソスソスソス[ソスoソスソスIPソスAソスhソスソスソスXソスソスソスwソスソス(ソスソスソス[ソスソスソスTソス[ソスoソス[ソスソスソス\ソスzソスソスソスソス鼾ソスフゑソス)

ソスiソスVソスjソスOソスソスソスソスソスソスソスtソスソスソスソスソス]ソス[ソスソスソスfソス[ソス^ソスxソス[ソスX(IPソスAソスhソスソスソスXソスヒドソスソスソスCソスソスソスソス)ソス成ソスソスソスナ抵ソスIPソスAソスhソスソスソスXソスツ具ソスソスナプソスソスソスoソスCソス_ソスiソスソスソスTソスCソスgソスナゑソスGMOソスニゑソスソスニゑソスBBソスjソスソスソスtソスソスソスソスソスソスソスソスソスソスソスマ擾ソスソスソスソスソストゑソスソスソス鼾ソスフゑソス
[root@centos ~]# vi /var/named/SUBxxx.xxx.xxx.xxx.in-addr.arpa.db.wanソス@ソスソスソス@ソスOソスソスソスソスソスソスソスtソスソスソスソスソス]ソス[ソスソスソスfソス[ソス^ソスxソス[ソスXソス成ソスソスxxx.xxx.xxx.xxxソスヘサソス[ソスoソス[ソスフグソスソスソス[ソスoソスソスIPソスAソスhソスソスソスXソスソスソスtソスノ擾ソスソスソス(ソスソスF1.2.3.4ソスフ場合ソスソスSUB4.3.2.1.in-addr.arpa)
$TTL    86400
@       IN      SOA     ns1.centossrv.com.  root.centossrv.com.(
                                      2024122501 ; Serial
                                      7200       ; Refresh
                                      7200       ; Retry
                                      2419200    ; Expire
                                      86400 )    ; Minimum
        IN NS    ns1.centossrv.com.
xxx     IN PTR   centossrv.com.ソス@ソスソスソス@ソスTソス[ソスoソス[IPソスAソスhソスソスソスXソスナ会ソスソスハ包ソス(xxx.xxx.xxx.xxx)ソスニドソスソスソスCソスソスソスソスソスソスソスwソスソス
ソスソスソス]ソス[ソスソスソスソスソスマ更ソスソスソスヘ、SerialソスsソスソスNソスソスソスソスソスハ費ソス2ソスソス(YYYYMMDDXX)ソスフようソスノゑソスソスト、ソスKソスソスソスマ更ソスOソスソスソスソスソス蛯ォソスソスソスソスソスlソスノ変更ソスソスソス驍アソスソス(ソスソス:ソスマ更ソスOソスソス2024122501ソスネゑソスAソスマ更ソスソスソス2024122502ソスノゑソスソスソス)ソスBソスソスソスソスノゑソスソスAソスソスqソスソスソスソスZソスJソスソスソス_ソスソスソスソスソスヨのゾソス[ソスソスソスソスソスフ変更ソスソスソスソスソスソスソスソスソスsソスソスソスソス謔、ソスノなゑソス

ソスソスBINDソスNソスソス

ソスiソスPソスjBINDソスNソスソス
[root@centos ~]# systemctl start named-chrootソス@ソスソスソス@BINDソスNソスソス

[root@centos ~]# systemctl enable named-chrootソス@ソスソスソス@BINDソスソスソスソスソスNソスソスソスン抵ソス

ソスiソスQソスjTCP53ソスヤ、UDP53ソスヤポソス[ソスgソスJソスソス
ソスyソスソスソス[ソス^ソス[ソスz
ソスソスソス[ソス^ソス[ソスソスソスフ設抵ソスナ、TCP53ソスヤ、UDP53ソスヤポソス[ソスgソスヨのアソスNソスZソスXソスソスソスTソス[ソスoソス[ソスノ転ソスソスソスソスソスソス謔、ソスノゑソスソスソスB
ソスソスソスソスソス[ソス^ソス[ソスフ設抵ソスヘ各ソスソスソス[ソス^ソス[ソスフマソスjソスソスソスAソスソスソスワゑソスソスソスソスソスソス[ソスJソス[ソスハソスソス[ソス^ソス[ソス|ソス[ソスgソスJソスソスソス闖ソスソスソスQソスソス

ソスyソスtソス@ソスCソスAソスEソスHソス[ソスソスソスz
ソスTソス[ソスoソス[ソスソスソスフフソス@ソスCソスAソスEソスHソス[ソスソスソスン抵ソスナ、TCP53ソスヤ、UDP53ソスヤポソス[ソスgソスヨのアソスNソスZソスXソスソスソスソスソスツゑソスソスソス謔、ソスノゑソスソスソスB
ソスソスソスtソス@ソスCソスAソスEソスHソス[ソスソスソスン抵ソスヘゑソスソスソスソスソスソスソスQソスソス

ソス|ソス[ソスgソス`ソスFソスbソスNソスナ「ソスzソスXソスgソスソス(FQDN) ソスワゑソスソスソス ソスOソスソスソス[ソスoソスソスIPソスAソスhソスソスソスX ソスvソスノサソス[ソスoソス[ソスソス(ソスソス:centossrv.com)ソスAソスuソス`ソスFソスbソスNソス|ソス[ソスgソスヤ搾ソスソスvソスソス53ソスニ難ソスソスヘ、ソスuソスソスソスソスソスナゑソスソスソスソスpソスソスソスソスソスソスソスソスソスワゑソスソスソスソスuソスソスソスソスソスモ・ソスソスソス事搾ソスソスvソスソスソスmソスFソスソスソスソスソスソスソスvソスソスソス`ソスFソスbソスNソスソスソスト「Portソス`ソスFソスbソスNソスソスソスsソスvソス{ソス^ソスソスソスソスソスソスソスソスソスソスソスAソスzソスXソスgソスFcentossrv.com ソス|ソス[ソスgソスF53 ソスノアソスNソスZソスXソスナゑソスソスワゑソスソスソスソスニ表ソスソスソスソスソスソス驍アソスニゑソスソスmソスFソスB
UDP Port Scannerソスナ「Enter IPv4 or IPv6 address to scan:ソスvソスノサソス[ソスoソス[ソスフグソスソスソス[ソスoソスソスIPソスAソスhソスソスソスXソスAソスuScan a custom portソスvソスソス53ソスニ難ソスソスヘ、ソスuI agree to the terms of useソスvソスソスソス`ソスFソスbソスNソスソスソスト「Scan Nowソスvソス{ソス^ソスソスソスソスソスソスソスソスソスソスソスAソスuStatusソスvソスソスOpenソスニ表ソスソスソスソスソスソス驍アソスニゑソスソスmソスFソスB


ソスソスソス竝ソスソスソスソスDNSソスTソス[ソスoソス[ソスソスLinuxソスTソス[ソスoソス[ソスノ変更

ソスiソスPソスjソスTソス[ソスoソス[ソスソスソスgソスフ問合ソスソスソスソスDNSソスTソス[ソスoソス[ソスソスソスソスソスソスソスソスソスgソスノ変更
[root@centos ~]# nmcli connection modify ens3 ipv4.dns "127.0.0.1"ソス@ソスソスソス@LinuxソスTソス[ソスoソス[ソスソスソスgソスソス竝ソスソスソスソスDNSソスTソス[ソスoソス[ソスニゑソスソスソス

[root@centos ~]# systemctl restart NetworkManagerソス@ソスソスソス@ソス竝ソスソスソスソスDNSソスTソス[ソスoソス[ソスマ更ソスソスソスf

ソスiソスQソスjソスNソスソスソスCソスAソスソスソスgソスフ問合ソスソスソスソスDNSソスTソス[ソスoソス[ソスソス{DNSソスTソス[ソスoソス[ソスノ変更ソスソスソスソスソス[ソス^ソス[ソスソスDHCPソス@ソス\ソスナクソスソスソスCソスAソスソスソスgソスフ問合ソスソスソスソスDNSソスTソス[ソスoソス[ソスソスIPソスAソスhソスソスソスXソスソスン定しソストゑソスソスソス鼾
ソスソスソス[ソス^ソス[ソスソスDHCPソスン抵ソスソスDNSソスTソス[ソスoソス[ソスソスIPソスAソスhソスソスソスXソスソス{DNSソスTソス[ソスoソス[ソスソスIPソスAソスhソスソスソスXソスノ変更ソスソスソスソス

ソスiソスRソスjソスNソスソスソスCソスAソスソスソスgソスフ問合ソスソスソスソスDNSソスTソス[ソスoソス[ソスマ更ソスソスソスf
ソスNソスソスソスCソスAソスソスソスgソスソスソスト起ソスソスソスソスソスAソス竝ソスソスソスソスDNSソスTソス[ソスoソス[ソスフ変更ソス反映ソスソスソスソスソスソス

ソスソスBINDソスmソスF

ソスiソスPソスjBINDソスmソスF(ソスNソスソスソスCソスAソスソスソスgソスソスWindowsソスフ場合)
C:>nslookupソス@ソスソスソス@nslookupソスNソスソス
Default Server:  centossrv.com
Address:  192.168.1.3

> centossrv.comソス@ソスソスソス@LinuxソスTソス[ソスoソス[ソスフ撰ソスソスソスソスソスソスeソスXソスg
Server:  centossrv.com
Address:  192.168.1.3

Name:    centossrv.com
Address:  192.168.1.3ソス@ソスソスソス@IPソスAソスhソスソスソスXソスソスソスヤゑソスソストゑソスソスソス

> 192.168.1.3ソス@ソスソスソス@LinuxソスTソス[ソスoソス[ソスフ逆ソスソスソスソスソスeソスXソスg
Server:  centossrv.com
Address:  192.168.1.3

Name:    centossrv.comソス@ソスソスソス@ソスhソスソスソスCソスソスソスソスソスソスソスヤゑソスソストゑソスソスソス
Address:  192.168.1.3

> www.isc.orgソス@ソスソスソス@ソスOソスソスソスhソスソスソスCソスソスソスフ撰ソスソスソスソスソスソスeソスXソスg
Server:  centossrv.com
Address:  192.168.1.3

Non-authoritative answer:
Name:    www.isc.org
Address:  149.20.64.42ソス@ソスソスソス@IPソスAソスhソスソスソスXソスソスソスヤゑソスソストゑソスソスソス

> 149.20.64.42ソス@ソスソスソス@ソスOソスソスソスhソスソスソスCソスソスソスフ逆ソスソスソスソスソスeソスXソスg
Server:  centossrv.com
Address:  192.168.1.3

Name:    external.isc.orgソス@ソスソスソス@ソスzソスXソスgソスソスソスソスソスヤゑソスソストゑソスソスソス
Address:  149.20.64.42

> exitソス@ソスソスソス@nslookupソスソス~

C:>

ソスiソスQソスjBINDソスmソスF(ソスNソスソスソスCソスAソスソスソスgソスソスLinuxソスフ場合)
[root@centos ~]# dig centossrv.comソス@ソスソスソス@LinuxソスTソス[ソスoソス[ソスフ撰ソスソスソスソスソスソスeソスXソスg

; <<>> DiG 9.2.3 <<>> centossrv.com
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 59712
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;centossrv.com.               IN      A

;; ANSWER SECTION:
centossrv.com.        86400   IN      A       192.168.1.3ソス@ソスソスソス@IPソスAソスhソスソスソスXソスソスソスヤゑソスソストゑソスソスソス

;; AUTHORITY SECTION:
centossrv.com.        86400   IN      NS      centossrv.com.

;; Query time: 8 msec
;; SERVER: 192.168.1.3#53(192.168.1.3)
;; WHEN: Mon Oct  4 17:39:31 2004
;; MSG SIZE  rcvd: 63

[root@centos ~]# dig -x 192.168.1.3ソス@ソスソスソス@LinuxソスTソス[ソスoソス[ソスフ逆ソスソスソスソスソスeソスXソスg

; <<>> DiG 9.2.3 <<>> -x 192.168.1.3
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 14938
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 1

;; QUESTION SECTION:
;1.1.168.192.in-addr.arpa.      IN      PTR

;; ANSWER SECTION:
1.1.168.192.in-addr.arpa. 86400 IN      PTR     centossrv.com.ソス@ソスソスソス@ソスhソスソスソスCソスソスソスソスソスソスソスヤゑソスソストゑソスソスソス

;; AUTHORITY SECTION:
1.168.192.in-addr.arpa. 86400   IN      NS      centossrv.com.

;; ADDITIONAL SECTION:
centossrv.com.        86400   IN      A       192.168.1.3

;; Query time: 8 msec
;; SERVER: 192.168.1.3#53(192.168.1.3)
;; WHEN: Mon Oct  4 17:39:39 2004
;; MSG SIZE  rcvd: 101

[root@centos ~]# dig www.centos.orgソス@ソスソスソス@ソスOソスソスソスhソスソスソスCソスソスソスフ撰ソスソスソスソスソスソスeソスXソスg

; <<>> DiG 9.11.36-RedHat-9.11.36-3.el8_6.1 <<>> www.centos.org
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 2262
;; flags: qr rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 13, ADDITIONAL: 27

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
; COOKIE: bdfe96dbee9457d676c7a43e634a3fc1918410891510cfa9 (good)
;; QUESTION SECTION:
;www.centos.org.                        IN      A

;; ANSWER SECTION:
www.centos.org.         60      IN      A       81.171.33.201ソス@ソスソスソス@IPソスAソスhソスソスソスXソスソスソスヤゑソスソストゑソスソスソス
www.centos.org.         60      IN      A       81.171.33.202
www.centos.org.         60      IN      A       35.178.203.231

;; AUTHORITY SECTION:
.                       516287  IN      NS      g.root-servers.net.
.                       516287  IN      NS      a.root-servers.net.
.                       516287  IN      NS      e.root-servers.net.
.                       516287  IN      NS      j.root-servers.net.
.                       516287  IN      NS      m.root-servers.net.
.                       516287  IN      NS      d.root-servers.net.
.                       516287  IN      NS      f.root-servers.net.
.                       516287  IN      NS      c.root-servers.net.
.                       516287  IN      NS      i.root-servers.net.
.                       516287  IN      NS      h.root-servers.net.
.                       516287  IN      NS      l.root-servers.net.
.                       516287  IN      NS      k.root-servers.net.
.                       516287  IN      NS      b.root-servers.net.

;; ADDITIONAL SECTION:
l.root-servers.net.     516286  IN      A       199.7.83.42
d.root-servers.net.     516286  IN      A       199.7.91.13
g.root-servers.net.     516286  IN      A       192.112.36.4
b.root-servers.net.     516286  IN      A       199.9.14.201
j.root-servers.net.     516286  IN      A       192.58.128.30
a.root-servers.net.     516286  IN      A       198.41.0.4
i.root-servers.net.     516286  IN      A       192.36.148.17
e.root-servers.net.     516286  IN      A       192.203.230.10
c.root-servers.net.     516286  IN      A       192.33.4.12
f.root-servers.net.     516286  IN      A       192.5.5.241
m.root-servers.net.     516286  IN      A       202.12.27.33
h.root-servers.net.     516286  IN      A       198.97.190.53
k.root-servers.net.     516286  IN      A       193.0.14.129
l.root-servers.net.     516286  IN      AAAA    2001:500:9f::42
d.root-servers.net.     516286  IN      AAAA    2001:500:2d::d
g.root-servers.net.     516286  IN      AAAA    2001:500:12::d0d
b.root-servers.net.     516286  IN      AAAA    2001:500:200::b
j.root-servers.net.     516286  IN      AAAA    2001:503:c27::2:30
a.root-servers.net.     516286  IN      AAAA    2001:503:ba3e::2:30
i.root-servers.net.     516286  IN      AAAA    2001:7fe::53
e.root-servers.net.     516286  IN      AAAA    2001:500:a8::e
c.root-servers.net.     516286  IN      AAAA    2001:500:2::c
f.root-servers.net.     516286  IN      AAAA    2001:500:2f::f
m.root-servers.net.     516286  IN      AAAA    2001:dc3::35
h.root-servers.net.     516286  IN      AAAA    2001:500:1::53
k.root-servers.net.     516286  IN      AAAA    2001:7fd::1

;; Query time: 247 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: ソスy 10ソスソス 15 14:06:09 JST 2022
;; MSG SIZE  rcvd: 902

[root@centos ~]# dig -x 81.171.33.201ソス@ソスソスソス@ソスOソスソスソスhソスソスソスCソスソスソスフ逆ソスソスソスソスソスeソスXソスg

; <<>> DiG 9.11.36-RedHat-9.11.36-3.el8_6.1 <<>> -x 81.171.33.201
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 54400
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 13, ADDITIONAL: 27

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
; COOKIE: 66c7cfec9bc2880b672b1fed634a3fca050f2bfa9b50f677 (good)
;; QUESTION SECTION:
;201.33.171.81.in-addr.arpa.    IN      PTR

;; ANSWER SECTION:
201.33.171.81.in-addr.arpa. 21600 IN    PTR     ip-81.171.33.201.centos.org.ソス@ソスソスソス@ソスzソスXソスgソスソスソスソスソスヤゑソスソストゑソスソスソス

;; AUTHORITY SECTION:
.                       516278  IN      NS      d.root-servers.net.
.                       516278  IN      NS      g.root-servers.net.
.                       516278  IN      NS      l.root-servers.net.
.                       516278  IN      NS      i.root-servers.net.
.                       516278  IN      NS      c.root-servers.net.
.                       516278  IN      NS      j.root-servers.net.
.                       516278  IN      NS      a.root-servers.net.
.                       516278  IN      NS      k.root-servers.net.
.                       516278  IN      NS      b.root-servers.net.
.                       516278  IN      NS      m.root-servers.net.
.                       516278  IN      NS      h.root-servers.net.
.                       516278  IN      NS      f.root-servers.net.
.                       516278  IN      NS      e.root-servers.net.

;; ADDITIONAL SECTION:
l.root-servers.net.     516277  IN      A       199.7.83.42
d.root-servers.net.     516277  IN      A       199.7.91.13
g.root-servers.net.     516277  IN      A       192.112.36.4
b.root-servers.net.     516277  IN      A       199.9.14.201
j.root-servers.net.     516277  IN      A       192.58.128.30
a.root-servers.net.     516277  IN      A       198.41.0.4
i.root-servers.net.     516277  IN      A       192.36.148.17
e.root-servers.net.     516277  IN      A       192.203.230.10
c.root-servers.net.     516277  IN      A       192.33.4.12
f.root-servers.net.     516277  IN      A       192.5.5.241
m.root-servers.net.     516277  IN      A       202.12.27.33
h.root-servers.net.     516277  IN      A       198.97.190.53
k.root-servers.net.     516277  IN      A       193.0.14.129
l.root-servers.net.     516277  IN      AAAA    2001:500:9f::42
d.root-servers.net.     516277  IN      AAAA    2001:500:2d::d
g.root-servers.net.     516277  IN      AAAA    2001:500:12::d0d
b.root-servers.net.     516277  IN      AAAA    2001:500:200::b
j.root-servers.net.     516277  IN      AAAA    2001:503:c27::2:30
a.root-servers.net.     516277  IN      AAAA    2001:503:ba3e::2:30
i.root-servers.net.     516277  IN      AAAA    2001:7fe::53
e.root-servers.net.     516277  IN      AAAA    2001:500:a8::e
c.root-servers.net.     516277  IN      AAAA    2001:500:2::c
f.root-servers.net.     516277  IN      AAAA    2001:500:2f::f
m.root-servers.net.     516277  IN      AAAA    2001:dc3::35
h.root-servers.net.     516277  IN      AAAA    2001:500:1::53
k.root-servers.net.     516277  IN      AAAA    2001:7fd::1

;; Query time: 446 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: ソスy 10ソスソス 15 14:06:18 JST 2022
;; MSG SIZE  rcvd: 907

ソスiソスRソスjソスIソス[ソスvソスソスソスソスソス]ソスソスソスoソスmソスF
DNSソスTソス[ソスoソス[ソスソスソスIソス[ソスvソスソスソスソスソス]ソスソスソスoソスiソスOソスソスソスフ不ソスソスソスソスソスIPソスAソスhソスソスソスXソスソスソスソスフ再帰ソスIソスネ問いソスソスソスせソスソスソスソスソスツゑソスソストゑソスソスソスDNS ソスTソス[ソスoソスjソスニなゑソスソストゑソスソスネゑソスソスソスソスニゑソスソスmソスFソスソスソスソスB
[root@centos ~]# wget -qO - http://www.openresolver.jp/cli/check.htmlソス@ソスソスソス@ソスIソス[ソスvソスソスソスソスソス]ソスソスソスoソスmソスF
Configured DNS server:  [NOT open] xxxx:xxxx:xxxx:xxxx::xxx(None)ソス@ソスソスソス@[NOT open]ソスmソスF
Configured DNS server:  [NOT open] xxxx:xxxx:xxxx:xxxx::xxx(None)ソス@ソスソスソス@[NOT open]ソスmソスF
Source IP address: [NOT open] xxx.xxx.xxx.xxx(centossrv.com.)ソス@ソスソスソス@[NOT open]ソスmソスF


ソスソスソスlソス[ソスソスソスTソス[ソスoソス[ソスマ更ソスソスソスナ抵ソスIPソスAソスhソスソスソスXソスツ具ソスソスフ場合ソスフゑソス

centossrv.comソスフネソス[ソスソスソスTソス[ソスoソス[ソスソスソスソスソスWソスXソスgソスソスソスソスDNSソスTソス[ソスoソス[ソスソスソス邇ゥソスソスDNSソスTソス[ソスoソス[ソスノ変更ソスソスソスソスB
VALUE DOMAINソスナ独趣ソスソスhソスソスソスCソスソスソスソスソス謫セソスソスソスソスソス鼾ソスフネソス[ソスソスソスTソス[ソスoソス[ソスフ変更ソス闖ソスソスソスネ会ソスソスノ趣ソスソスソスソスB
ソスソスソスフ托ソスソスフソスソスWソスXソスgソスソスソスナ独趣ソスソスhソスソスソスCソスソスソスソスソス謫セソスソスソスソスソス鼾ソスヘ各ソスソスソスWソスXソスgソスソスソスソスWebソスTソスCソスgソスナ確ソスFソスソスソス驍アソスソス

ソスiソスPソスjソスソスソス[ソスUソス[ソスoソス^ソスソスソスフソスソス[ソスUソス[IDソスニパソスXソスソスソス[ソスhソスソスソスソスソスOソスCソスソスソスソスソスソスB

ソスiソスQソスjソスuソスhソスソスソスCソスソスソスソスソスソスvソスヒ「ソスlソス[ソスソスソスTソス[ソスoソス[ソスフ変更ソスvソスヒ「ソスソスソスフドソスソスソスCソスソスソスナネソス[ソスソスソスTソス[ソスoソス[ソスソスソス成ソスvソスナ、ソスuソスlソス[ソスソスソスTソス[ソスoソス[ソスソスソスvソスヘデソスtソスHソスソスソスg(ns1.centossrv.com)ソスフまま、ソスuソスlソス[ソスソスソスTソス[ソスoソス[ソスソスIPソスAソスhソスソスソスXソスvソスノサソス[ソスoソス[ソスフグソスソスソス[ソスoソスソスIPソスAソスhソスソスソスXソスソスソスソスヘゑソスソスト「ソスヌ会ソスソスvソス{ソス^ソスソスソスソスソスソスソスソスソスソスソスAソスlソス[ソスソスソスTソス[ソスoソス[ソスソスヌ会ソスソスソスソスソスB

ソスiソスRソスjソスuソスhソスソスソスCソスソスソスソスソスソスvソスヒ「ソスlソス[ソスソスソスTソス[ソスoソス[ソスフ変更ソスvソスナネソス[ソスソスソスTソス[ソスoソス[ 3ソス`ソスソスソスNソスソスソスAソスソスソスAソスuソスlソス[ソスソスソスTソス[ソスoソス[ 1ソスvソスノプソスソスソスCソス}ソスソスソスlソス[ソスソスソスTソス[ソスoソス[ソスソス"ns1.centossrv.com"ソスAソスuソスlソス[ソスソスソスTソス[ソスoソス[ 2ソスvソスノセソスJソスソスソス_ソスソスソスlソス[ソスソスソスTソス[ソスoソス[ソスソス"ns1.maihama-net.com"ソスAソスuソスlソス[ソスソスソスTソス[ソスoソス[ 3ソスvソスノセソスJソスソスソス_ソスソスソスlソス[ソスソスソスTソス[ソスoソス[ソスソス"ns3.maihama-net.com"(ソスZソスJソスソスソス_ソスソスソスlソス[ソスソスソスTソス[ソスoソス[ソスヘ鯉ソスq)ソスソスソスソスヘゑソスソスト「ソスロ托ソスソスソスソスソスvソス{ソス^ソスソスソスソスソスソスソスソスソスソスソスソスB

ソスソスソスネゑソスソスAソスlソス[ソスソスソスTソス[ソスoソス[ソスマ更ソスソスソスソスソスfソスソスソスソスソスワゑソス24ソス`48ソスソスソスヤ抵ソスソスxソス|ソスソスソスソス

ソスソスソスvソスソスソスCソス}ソスソスソスlソス[ソスソスソスTソス[ソスoソス[ソスmソスFソスソスソスナ抵ソスIPソスAソスhソスソスソスXソスツ具ソスソスフ場合ソスフゑソス

ソスソスソスソスソスWソスXソスgソスソスソスナのプソスソスソスCソス}ソスソスソスlソス[ソスソスソスTソス[ソスoソス[ソスマ更ソスソス24ソス`48ソスソスソスヤ抵ソスソスxソスoソス゚鯉ソスノ行ソスソスソスソスソスソス

ソスiソスPソスjソスソスソスソスソスソスソスmソスF
NS Records Lookup Testソスナ「Enter a domain name or IP addressソスvソスソスソスノドソスソスソスCソスソスソスソス(ソスソス:centossrv.com)ソスソスソスソスヘゑソスソスト「Test Nowソスvソス{ソス^ソスソスソスソスソスソスソスソスソスソスソスソスB

ソスネ会ソスソスフようソスネ鯉ソスソスハゑソスソス\ソスソスソスソスソスソスソスソスOK
Results
Domain name tested:	centossrv.com
Test performed from:	New York, NY
Test performed at:	2022-10-15 05:15:27 (GMT +00:00)
Known NS records:	
ns1.centossrv.com	XXX.XXX.XXX.XXXソス@ソスソスソス@ソスlソス[ソスソスソスTソス[ソスoソス[ソスソスソスソスソスソスDNSソスTソス[ソスoソス[ソスノなゑソスソストゑソスソス驍アソスソス

ソスiソスQソスjソスtソスソスソスソスソスmソスFソスソスソスvソスソスソスoソスCソス_ソスiソスソスソスTソスCソスgソスナゑソスGMOソスニゑソスソスニゑソスBBソスjソスソスソスtソスソスソスソスソスソスソスソスソスソスソスマ擾ソスソスソスソスソストゑソスソスソス鼾ソスフゑソス
Reverse DNS Lookupソスナ「Enter an IP addressソスvソスソスソスノグソスソスソス[ソスoソスソスIPソスAソスhソスソスソスXソスソスソスソスヘゑソスソスト「Test Nowソスvソス{ソス^ソスソスソスソスソスソスソスソスソスソスソスソスB

ソスネ会ソスソスフようソスネ鯉ソスソスハゑソスソス\ソスソスソスソスソスソスソスソスOK
Reverse DNS results

IP address tested:	xxx.xxx.xxx.xxx
Test performed from:	New York, NY
Test performed at:	2017-01-29 14:45:19 (GMT +00:00)
Known DNS records:	
centossrv.com	xxx.xxx.xxx.xxxソス@ソスソスソス@ソスhソスソスソスCソスソスソスソスソスソスソス\ソスソスソスソスソスソス驍アソスソス

ソスソスソスZソスJソスソスソス_ソスソスソスlソス[ソスソスソスTソス[ソスoソス[ソスoソス^ソスソスソスナ抵ソスIPソスAソスhソスソスソスXソスツ具ソスソスフ場合ソスフゑソス

ソスZソスJソスソスソス_ソスソスソスlソス[ソスソスソスTソス[ソスoソス[ソスヘプソスソスソスCソス}ソスソスソスlソス[ソスソスソスTソス[ソスoソス[ソスフゾソス[ソスソスソスソス`ソスtソス@ソスCソスソスソスソスソスRソスsソス[ソスソスソスト、ソスvソスソスソスCソス}ソスソスソスlソス[ソスソスソスTソス[ソスoソス[ソスニ難ソスソスソスソス謔、ソスソスcentossrv.comソスソスソスソスOソスソスソス[ソスoソスソスIPソスAソスhソスソスソスXソスヨの変奇ソスソスソスソスsソスネゑソスソストゑソスソスソスソスTソス[ソスoソス[ソスナ、ソスvソスソスソスCソス}ソスソスソスlソス[ソスソスソスTソス[ソスoソス[ソスヨの包ソスソスラ包ソスソスUソスソスソスsソスネゑソスソスソスB
ソスソスソスソスソスナは、ソスソスソスソスソスナセソスJソスソスソス_ソスソスソスlソス[ソスソスソスTソス[ソスoソス[ソス請ゑソスソスソスソスソスソストゑソスソスソスソスソス}ソスCソスnソス}ソスlソスbソスgソスフサソス[ソスrソスXソス利用ソスソスソスソスB

ソスiソスPソスjソスZソスJソスソスソス_ソスソスソスlソス[ソスソスソスTソス[ソスoソス[ソス\ソスソスソスソスソスソス
ソス}ソスCソスnソス}ソスlソスbソスgソスナソスソス[ソスUソス[ソスoソス^ソスソスソスAソスoソス^ソスソスソスフソスソス[ソスソスソスAソスhソスソスソスXソスソスソスノゑソスソスソスソスソスソス[ソスソスソスノ従ソスソスソスAソスvソスソスソスCソス}ソスソスソスlソス[ソスソスソスTソス[ソスoソス[ソスソスソス(ソスTソス[ソスoソス[ソスフグソスソスソス[ソスoソスソスIPソスAソスhソスソスソスXソスニドソスソスソスCソスソスソスソス(ソスソス:centossrv.com))ソスソスoソス^ソスソスソスソスB
ソスソスソスネゑソスソスAソスソスソス[ソスUソス[ソスoソス^ソスソスソスノ指ソス閧キソス驛ソス[ソスソスソスAソスhソスソスソスXソスヘ、ソスoソス^ソスソスソスソスhソスソスソスCソスソスソスソスソスフソスソス[ソスソスソスAソスhソスソスソスX(ソスソス:webmaster@centossrv.com)ソスナなゑソスソスソスホなゑソスネゑソスソスソスソス゚、ソスソスソスソスソスソス[ソスソスソスTソス[ソスoソス[ソスソスソス\ソスzソスソスソストゑソスソスソス

ソスiソスQソスjソスZソスJソスソスソス_ソスソスソスlソス[ソスソスソスTソス[ソスoソス[ソスン抵ソス
[root@centos ~]# vi /etc/named/named.centossrv.com.zone.wanソス@ソスソスソス@ソスOソスソスソスソスソスソスソス]ソス[ソスソスソスソス`ソスtソス@ソスCソスソスソスメ集
zone "centossrv.com" {
        type master;
        file "centossrv.com.db.wan";
        allow-query { any; };
        ソスヌ会ソス(ソスソスソスソスソスソスソスソス)
        allow-transfer {
                160.16.54.90;ソス@ソスソスソス@ソスソスソスフゾソス[ソスソスソスソスソスフ転ソスソスソスソスニゑソスソスソス160.16.54.90(ns1.maihama-net.comソスソスIPソスAソスhソスソスソスX)ソスソスヌ会ソス
                153.120.38.37;ソス@ソスソスソス@ソスソスソスフゾソス[ソスソスソスソスソスフ転ソスソスソスソスニゑソスソスソス153.120.38.37(ns3.maihama-net.comソスソスIPソスAソスhソスソスソスX)ソスソスヌ会ソス
        };
        notify yes;ソス@ソスソスソス@ソスソスソスフゾソス[ソスソスソスソスソスマ更ソスソスソスヘ托ソスソスソスソスノ擾ソスLソスZソスJソスソスソス_ソスソスソスヨ費ソスソスfソスソスソスソスソスソス
        ソスヌ会ソス(ソスソスソスソスソスワゑソス)
};

[root@centos ~]# vi /var/named/centossrv.com.db.wanソス@ソスソスソス@ソスOソスソスソスソスソスソスソスソスソスソスソスソスソス]ソス[ソスソスソスfソス[ソス^ソスxソス[ソスXソスメ集
$TTL    86400
@       IN      SOA     ns1.centossrv.com.  root.centossrv.com.(
                                      2024122502 ; Serialソス@ソスソスソス@ソスソス2ソスソスソスフ通番ゑソスソスJソスEソスソスソスgソスAソスbソスvソスソスソスソス
                                      7200       ; Refresh
                                      7200       ; Retry
                                      2419200    ; Expire
                                      86400 )    ; Minimum
        IN NS    ns1.centossrv.com.
        IN NS    ns1.maihama-net.com.ソス@ソスソスソス@ソスZソスJソスソスソス_ソスソスソスlソス[ソスソスソスTソス[ソスoソス[ソスニゑソスソスソスns1.maihama-net.comソスソスヌ会ソス
        IN NS    ns3.maihama-net.com.ソス@ソスソスソス@ソスZソスJソスソスソス_ソスソスソスlソス[ソスソスソスTソス[ソスoソス[ソスニゑソスソスソスns3.maihama-net.comソスソスヌ会ソス
        IN MX 10 centossrv.com.
ns1     IN A     XXX.XXX.XXX.XXX
@       IN A     XXX.XXX.XXX.XXX
www     IN A     XXX.XXX.XXX.XXX
ftp     IN A     XXX.XXX.XXX.XXX
mail    IN A     XXX.XXX.XXX.XXX
centossrv.com. IN TXT "v=spf1 a mx ~all"

[root@centos ~]# systemctl reload named-chrootソス@ソスソスソス@BINDソスン定反ソスf

ソスソスソスZソスJソスソスソス_ソスソスソスlソス[ソスソスソスTソス[ソスoソス[ソスmソスFソスソスソスナ抵ソスIPソスAソスhソスソスソスXソスツ具ソスソスフ場合ソスフゑソス

ソスiソスPソスjソスZソスJソスソスソス_ソスソスソスlソス[ソスソスソスTソス[ソスoソス[ソスナの撰ソスソスソスソスソスソスmソスF
[root@centos ~]# dig @160.16.54.90 centossrv.comソス@ソスソスソス@ソスZソスJソスソスソス_ソスソスソスlソス[ソスソスソスTソス[ソスoソス[(ns1.maihama-net.com)ソスナ撰ソスソスソスソスソスソスナゑソスソス驍ゥソスmソスF

; <<>> DiG 9.9.4-RedHat-9.9.4-14.el7 <<>> @160.16.54.90 centossrv.com
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 27648
;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 3, ADDITIONAL: 4
;; WARNING: recursion requested but not available

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;centossrv.com.                 IN      A

;; ANSWER SECTION:
centossrv.com.          86400   IN      A       XXX.XXX.XXX.XXXソス@ソスソスソス@ソスTソス[ソスoソス[ソスフグソスソスソス[ソスoソスソスIPソスAソスhソスソスソスXソスソスソスヤゑソスソストゑソスソスソス

;; AUTHORITY SECTION:
centossrv.com.          86400   IN      NS      ns1.centossrv.com.
centossrv.com.          86400   IN      NS      ns3.maihama-net.com.
centossrv.com.          86400   IN      NS      ns1.maihama-net.com.

;; ADDITIONAL SECTION:
ns1.centossrv.com.      86400   IN      A       XXX.XXX.XXX.XXX

;; Query time: 31 msec
;; SERVER: 160.16.54.90#53(160.16.54.90)
;; WHEN: ソスソス 12ソスソス 10 12:23:40 JST 2014
;; MSG SIZE  rcvd: 172

[root@centos ~]# dig @153.120.38.37 centossrv.comソス@ソスソスソス@ソスZソスJソスソスソス_ソスソスソスlソス[ソスソスソスTソス[ソスoソス[(ns3.maihama-net.com)ソスナ撰ソスソスソスソスソスソスナゑソスソス驍ゥソスmソスF

; <<>> DiG 9.9.4-RedHat-9.9.4-14.el7 <<>> @153.120.38.37 centossrv.com
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 43913
;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 3, ADDITIONAL: 4
;; WARNING: recursion requested but not available

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;centossrv.com.                 IN      A

;; ANSWER SECTION:
centossrv.com.          86400   IN      A       XXX.XXX.XXX.XXXソス@ソスソスソス@ソスTソス[ソスoソス[ソスフグソスソスソス[ソスoソスソスIPソスAソスhソスソスソスXソスソスソスヤゑソスソストゑソスソスソス

;; AUTHORITY SECTION:
centossrv.com.          86400   IN      NS      ns3.maihama-net.com.
centossrv.com.          86400   IN      NS      ns1.centossrv.com.
centossrv.com.          86400   IN      NS      ns1.maihama-net.com.

;; ADDITIONAL SECTION:
ns1.centossrv.com.      86400   IN      A       XXX.XXX.XXX.XXX
ns1.maihama-net.com.    7200    IN      A       160.16.54.90
ns3.maihama-net.com.    7200    IN      A       153.120.38.37

;; Query time: 117 msec
;; SERVER: 153.120.38.37#53(153.120.38.37)
;; WHEN: ソスソス 12ソスソス 10 12:24:05 JST 2014
;; MSG SIZE  rcvd: 172


ソスiソスQソスjソスZソスJソスソスソス_ソスソスソスlソス[ソスソスソスTソス[ソスoソス[ソスソスソスmソスF
ソスソスソスソスソスWソスXソスgソスソスソスナのセソスJソスソスソス_ソスソスソスlソス[ソスソスソスTソス[ソスoソス[ソスoソス^ソスソス24ソス`48ソスソスソスヤ抵ソスソスxソスoソス゚鯉ソスノ行ソスソスソスソスソスソス

NS Records Lookup Testソスナ「Enter a domain name or IP addressソスvソスソスソスノドソスソスソスCソスソスソスソス(ソスソス:centossrv.com)ソスソスソスソスヘゑソスソスト「Test Nowソスvソス{ソス^ソスソスソスソスソスソスソスソスソスソスソスソスB

ソスネ会ソスソスフようソスネ鯉ソスソスハゑソスソス\ソスソスソスソスソスソスソスソスOK
Results
Domain name tested:	centossrv.com
Test performed from:	New York, NY
Test performed at:	2021-01-03 02:30:31 (GMT +00:00)
Known NS records:	
ns1.centossrv.com	XXX.XXX.XXX.XXX
ns1.maihama-net.com	XXX.XXX.XXX.XXX
ns3.maihama-net.com	XXX.XXX.XXX.XXX
ソス@ソスソスソス@ソスZソスJソスソスソス_ソスソスソスlソス[ソスソスソスTソス[ソスoソス[ソスソスソス\ソスソスソスソスソスソストゑソスソス驍アソスソス
ソス@ソスソスソス@ソスZソスJソスソスソス_ソスソスソスlソス[ソスソスソスTソス[ソスoソス[ソスソスIPソスAソスhソスソスソスXソスソスソスソスソスソスソストゑソスソス驍アソスソス


ソスソスソスヨ連ソスRソスソスソスeソスソスソスc

<!ソス\ソスeソスLソスXソスgソスフみゑソス4ソスsソス\ソスソスソスノ追会ソスソスソスCソスソスソスソスソスソス\>



ソスソスソスソスソスフペソス[ソスWソスフトソスbソスvソスヨ戻ゑソス

ソスvソスソスソスCソスoソスVソス[ソス|ソスソスソスVソス[
centossrv.com