{"id":91008,"date":"2026-08-06T14:32:57","date_gmt":"2026-08-06T06:32:57","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/91008.html"},"modified":"2026-08-06T14:32:57","modified_gmt":"2026-08-06T06:32:57","slug":"17-linux%e5%ad%a6%e4%b9%a0%e4%b9%8b%e6%97%85%e4%b9%8bdns%e5%9f%9f%e5%90%8d%e7%b3%bb%e7%bb%9f%e5%9f%ba%e6%9c%ac%e8%ae%a4%e7%9f%a5","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/91008.html","title":{"rendered":"17-Linux\u5b66\u4e60\u4e4b\u65c5\u4e4bDNS\u57df\u540d\u7cfb\u7edf\u57fa\u672c\u8ba4\u77e5"},"content":{"rendered":"

Linux\u5b66\u4e60\u4e4b\u65c5\u4e4bDNS\u57df\u540d\u7cfb\u7edf\u57fa\u672c\u8ba4\u77e5<\/h2>\n

\u4e00\u3001DNS \u57df\u540d\u7cfb\u7edf<\/h3>\n

1\u3001\u4ec0\u4e48\u662fdns<\/h4>\n

DNS（Domain Name System，\u57df\u540d\u7cfb\u7edf），\u662f\u4e92\u8054\u7f51\u7684\u5730\u5740\u7ffb\u8bd1\u7cfb\u7edf\u3002 \u4f5c\u7528：\u628a\u4eba\u7c7b\u597d\u8bb0\u7684\u57df\u540d（\u5982 www.baidu.com）\u7ffb\u8bd1\u6210\u8ba1\u7b97\u673a\u80fd\u8bc6\u522b\u7684IP \u5730\u5740（\u5982 180.101.49.11），\u5b9e\u73b0\u4e0a\u7f51\u8bbf\u95ee\u3002<\/p>\n

2\u3001\u67e5\u8be2\u6d41\u7a0b<\/h4>\n

\u8c46\u5305\u751f\u6210\u4ec5\u4f9b\u53c2\u8003 \"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

3\u3001DNS\u8bb0\u5f55\u7c7b\u578b<\/h4>\n\n\u8bb0\u5f55\u7c7b\u578b\u6838\u5fc3\u4f5c\u7528QQ \u57df\u540d\u793a\u4f8b<\/tr>\n\n\n\n\n\n\n\n
A<\/td>\nIPv4 \u5730\u5740\u89e3\u6790<\/td>\nwww.qq.com \u2192 120.92.198.131<\/td>\n<\/tr>\n
AAAA<\/td>\nIPv6 \u5730\u5740\u89e3\u6790<\/td>\nwww.qq.com \u2192 2409:8c5c:2111:306::3<\/td>\n<\/tr>\n
CNAME<\/td>\n\u57df\u540d\u522b\u540d\u8df3\u8f6c<\/td>\nm.qq.com \u2192 mobile.qq.com<\/td>\n<\/tr>\n
MX<\/td>\n\u90ae\u4ef6\u670d\u52a1\u5668\u6307\u5b9a<\/td>\nqq.com \u2192 mx1.qq.com（\u4f18\u5148\u7ea7 10）<\/td>\n<\/tr>\n
TXT<\/td>\n\u57df\u540d\u9a8c\u8bc1 \/ \u53cd\u5783\u573e\u90ae\u4ef6<\/td>\nqq.com \u2192 SPF \u53cd\u5783\u573e\u8bb0\u5f55<\/td>\n<\/tr>\n
NS<\/td>\n\u6743\u5a01 DNS \u670d\u52a1\u5668\u6307\u5b9a<\/td>\nqq.com \u2192 ns1.qq.com\u3001ns2.qq.com<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

4\u3001\u672c\u5730hosts\u6587\u4ef6<\/h4>\n

#linux\u5b58\u653e\u4f4d\u7f6e<\/span>
\n[<\/span>root@rockydesk ~]<\/span># cat \/etc\/hosts<\/span>
\n127.0<\/span>.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
\n::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
\n10.0<\/span>.0.6 xyx.com
\n[<\/span>root@rockydesk ~]<\/span>#<\/span><\/p>\n

#Windows\u5b58\u653e\u4f4d\u7f6e：C:\\\\Windows\\\\System32\\\\drivers\\\\etc\\\\hosts<\/span><\/p>\n

6\u3001\u5e38\u89c1dns\u67e5\u8be2\u547d\u4ee4<\/h4>\n

dig：\u6700\u8be6\u7ec6\u7684DNS\u67e5\u8be2\u5de5\u5177<\/p>\n

#\u57fa\u672c\u67e5\u8be2<\/span>
\n[<\/span>root@rockydesk ~]<\/span># dig jd.com A<\/span><\/p>\n

;<\/span> <<<\/span>>><\/span> DiG 9.18<\/span>.33 <<<\/span>>><\/span> jd.com A
\n;<\/span>;<\/span> global options: +cmd
\n;<\/span>;<\/span> Got answer:
\n;<\/span>;<\/span> –>><\/span>HEADER<<-<\/span> opcode: QUERY, status: NOERROR, id: 59564<\/span>
\n;<\/span>;<\/span> flags: qr rd ra;<\/span> QUERY: 1<\/span>, ANSWER: 4<\/span>, AUTHORITY: 5<\/span>, ADDITIONAL: 5<\/span><\/p>\n

;<\/span>;<\/span> OPT PSEUDOSECTION:
\n;<\/span> EDNS: version: 0<\/span>, flags:;<\/span> udp: 1232<\/span>
\n;<\/span>;<\/span> QUESTION SECTION:
\n;<\/span>jd.com. IN A<\/p>\n

;<\/span>;<\/span> ANSWER SECTION:
\njd.com. 600<\/span> IN A 211.144<\/span>.24.218
\njd.com. 600<\/span> IN A 111.13<\/span>.149.108
\njd.com. 600<\/span> IN A 211.144<\/span>.27.126
\njd.com. 600<\/span> IN A 106.39<\/span>.171.134<\/p>\n

;<\/span>;<\/span> AUTHORITY SECTION:
\njd.com. 166415<\/span> IN NS ns4.jdcache.com.
\njd.com. 166415<\/span> IN NS ns1.jdcache.com.
\njd.com. 166415<\/span> IN NS ns5.jdcache.com.
\njd.com. 166415<\/span> IN NS ns2.jdcache.com.
\njd.com. 166415<\/span> IN NS ns3.jdcache.com.<\/p>\n

;<\/span>;<\/span> ADDITIONAL SECTION:
\nns1.jdcache.com. 55985<\/span> IN A 111.13<\/span>.28.10
\nns2.jdcache.com. 55881<\/span> IN A 111.206<\/span>.226.10
\nns3.jdcache.com. 57298<\/span> IN A 120.52<\/span>.149.254
\nns4.jdcache.com. 56526<\/span> IN A 106.39<\/span>.177.32<\/p>\n

;<\/span>;<\/span> Query time: 5<\/span> msec
\n;<\/span>;<\/span> SERVER: 218.85<\/span>.152.99#53(218.85.152.99) (UDP)<\/span>
\n;<\/span>;<\/span> WHEN: Wed Aug 05 10<\/span>:10:47 CST 2026<\/span>
\n;<\/span>;<\/span> MSG SIZE rcvd: 264<\/span><\/p>\n

#\u7cbe\u7b80\u67e5\u8be2<\/span>
\n[<\/span>root@rockydesk ~]<\/span># dig jd.com +short<\/span>
\n111.13<\/span>.149.108
\n211.144<\/span>.27.126
\n211.144<\/span>.24.218
\n106.39<\/span>.171.134<\/p>\n

#\u6307\u5b9a\u963f\u91cc\u4e91dns\u67e5\u8be2<\/span>
\n[<\/span>root@rockydesk ~]<\/span># dig @223.5.5.5 jd.com +short<\/span>
\n211.144<\/span>.24.218
\n106.39<\/span>.171.134
\n111.13<\/span>.149.108
\n211.144<\/span>.27.126<\/p>\n

nslookup \u7b80\u5355\u67e5\u8be2<\/p>\n

#\u57fa\u672c\u67e5\u8be2<\/span>
\n[<\/span>root@rockydesk ~]<\/span># nslookup qq.com<\/span>
\nServer: 218.85<\/span>.152.99
\nAddress: 218.85<\/span>.152.99#53<\/span><\/p>\n

Non-authoritative answer:
\nName: qq.com
\nAddress: 123.150<\/span>.76.218
\nName: qq.com
\nAddress: 113.108<\/span>.81.189<\/p>\n

#\u6307\u5b9adns\u67e5\u8be2<\/span>
\n[<\/span>root@rockydesk ~]<\/span># nslookup qq.com 223.5.5.5<\/span>
\nServer: 223.5<\/span>.5.5
\nAddress: 223.5<\/span>.5.5#53<\/span><\/p>\n

Non-authoritative answer:
\nName: qq.com
\nAddress: 123.150<\/span>.76.218
\nName: qq.com
\nAddress: 113.108<\/span>.81.189<\/p>\n

host \u7b80\u6d01\u8f93\u51fa<\/p>\n

#\u57fa\u672c\u67e5\u8be2<\/span>
\n[<\/span>root@rockydesk ~]<\/span># host qq.com<\/span>
\nqq.com has address 113.108<\/span>.81.189
\nqq.com has address 123.150<\/span>.76.218
\nqq.com mail is handled by 20<\/span> mx2.qq.com.
\nqq.com mail is handled by 30<\/span> mx1.qq.com.
\nqq.com mail is handled by 10<\/span> mx3.qq.com.<\/p>\n

#\u67e5\u8be2\u4e3b\u57df\u540d\u7684A\u8bb0\u5f55（IPv4\u5730\u5740）<\/span>
\n[<\/span>root@rockydesk ~]<\/span># host -t A qq.com<\/span>
\nqq.com has address 123.150<\/span>.76.218
\nqq.com has address 113.108<\/span>.81.189<\/p>\n

# \u67e5\u8be2MX\u90ae\u4ef6\u4ea4\u6362\u8bb0\u5f55（\u90ae\u4ef6\u670d\u52a1\u5668）<\/span>
\n[<\/span>root@rockydesk ~]<\/span># host -t MX qq.com<\/span>
\nqq.com mail is handled by 30<\/span> mx1.qq.com.
\nqq.com mail is handled by 20<\/span> mx2.qq.com.
\nqq.com mail is handled by 10<\/span> mx3.qq.com.<\/p>\n

# \u67e5\u8be2SOA\u6388\u6743\u8d77\u59cb\u8bb0\u5f55（\u533a\u57df\u6743\u5a01\u4fe1\u606f）<\/span>
\n[<\/span>root@rockydesk ~]<\/span># host -t SOA qq.com<\/span>
\nqq.com has SOA record ns1.qq.com. webmaster.qq.com. 1330914143<\/span> 3600<\/span> 300<\/span> 86400<\/span> 300<\/span>
\n[<\/span>root@rockydesk ~]<\/span>#<\/span><\/p>\n

#\u6307\u5b9adns\u67e5\u8be2<\/span>
\n[<\/span>root@rockydesk ~]<\/span># host qq.com 223.5.5.5<\/span>
\nUsing domain server:
\nName: 223.5<\/span>.5.5
\nAddress: 223.5<\/span>.5.5#53<\/span>
\nAliases:<\/p>\n

qq.com has address 113.108<\/span>.81.189
\nqq.com has address 123.150<\/span>.76.218
\nqq.com mail is handled by 30<\/span> mx1.qq.com.
\nqq.com mail is handled by 20<\/span> mx2.qq.com.
\nqq.com mail is handled by 10<\/span> mx3.qq.com.
\n[<\/span>root@rockydesk ~]<\/span>#<\/span><\/p>\n

\u4e8c\u3001\u90e8\u7f72DNS\u548c\u914d\u7f6e<\/h3>\n

1\u3001\u5b89\u88c5\u548c\u542f\u52a8DNS<\/h4>\n

[<\/span>root@rockydesk ~]<\/span># dnf -y install bind bind-utils<\/span>
\nroot@rockydesk ~]<\/span># systemctl enable –now named.service<\/span><\/p>\n

2\u3001\u4fee\u6539\u4e3b\u914d\u7f6e\u6587\u6863<\/h4>\n

[<\/span>root@rockydesk ~]<\/span># vim \/etc\/named.conf<\/span>
\n[<\/span>root@rockydesk ~]<\/span># cat \/etc\/named.conf <\/span>
\noptions {<\/span>
\n listen-on port 53<\/span> {<\/span> any;<\/span> }<\/span>;<\/span>#\u5c06127.0.0.1\u6539\u4e3aany，\u76d1\u542c\u4efb\u610fip53\u7aef\u53e3<\/span>
\n listen-on-v6 port 53<\/span> {<\/span> ::1;<\/span> }<\/span>;<\/span>
\n directory "\/var\/named"<\/span>;<\/span>
\n dump-file "\/var\/named\/data\/cache_dump.db"<\/span>;<\/span>
\n statistics-file "\/var\/named\/data\/named_stats.txt"<\/span>;<\/span>
\n memstatistics-file "\/var\/named\/data\/named_mem_stats.txt"<\/span>;<\/span>
\n secroots-file "\/var\/named\/data\/named.secroots"<\/span>;<\/span>
\n recursing-file "\/var\/named\/data\/named.recursing"<\/span>;<\/span>
\n allow-query {<\/span> any;<\/span> }<\/span>;<\/span> #\u5c06localhost\u6539\u4e3aany，\u5141\u8bb8\u4efb\u610f\u5ba2\u6237\u7aef\u67e5\u8be2<\/span><\/p>\n

[<\/span>root@rockydesk ~]<\/span>#<\/span><\/p>\n\n\u53c2\u6570\u6838\u5fc3\u542b\u4e49<\/tr>\n\n\n\n\n\n\n\n
listen-on<\/td>\n\u76d1\u542c\u54ea\u4e9b IP \u5730\u5740\u7684 53 \u7aef\u53e3<\/td>\n<\/tr>\n
allow-query<\/td>\n\u5141\u8bb8\u54ea\u4e9b\u5ba2\u6237\u7aef\u67e5\u8be2（any \u8868\u793a\u6240\u6709）<\/td>\n<\/tr>\n
allow-transfer<\/td>\n\u5141\u8bb8\u54ea\u4e9b\u670d\u52a1\u5668\u8fdb\u884c\u533a\u57df\u4f20\u8f93（\u5b89\u5168\u8bbe\u7f6e）<\/td>\n<\/tr>\n
forwarders<\/td>\n\u4e0a\u6e38 DNS \u670d\u52a1\u5668（\u7528\u4e8e\u89e3\u6790\u5916\u90e8\u57df\u540d）<\/td>\n<\/tr>\n
forward first<\/td>\n\u5148\u67e5 forwarders，\u67e5\u4e0d\u5230\u518d\u67e5\u6839\u670d\u52a1\u5668<\/td>\n<\/tr>\n
recursion yes<\/td>\n\u5141\u8bb8\u9012\u5f52\u67e5\u8be2<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

3\u3001\u914d\u7f6e\u653f\u534f\u89e3\u6790<\/h4>\n

\u914d\u7f6e\u6b63\u5411\u89e3\u6790\u533a\u57df\u58f0\u660e xyx.com<\/p>\n

[<\/span>root@rockydesk ~]<\/span># vim \/etc\/named.rfc1912.zones<\/span>
\n[<\/span>root@rockydesk ~]<\/span># tail -7 \/etc\/named.rfc1912.zones<\/span>
\nzone "xyx.com"<\/span> IN {<\/span> # \u58f0\u660e\u533a\u57df<\/span>
\n type<\/span> master;<\/span> # \u7c7b\u578b\u4e3a master<\/span>
\n file<\/span> "xyx.com.zone"<\/span>;<\/span> # \u533a\u57df\u6587\u4ef6<\/span>
\n allow-update {<\/span> none;<\/span> }<\/span>;<\/span> # \u7981\u6b62\u66f4\u65b0（\u53ef\u9009）<\/span>
\n}<\/span>;<\/span><\/p>\n

\u914d\u7f6e\u6b63\u5411\u89e3\u6790\u533a\u57df\u6587\u4ef6 xyx.com.zone<\/p>\n

;<\/span> \u4ee3\u8868\u6ce8\u91ca
\n[<\/span>root@rockydesk ~]<\/span># vim \/var\/named\/xyx.com.zone<\/span>
\n[<\/span>root@rockydesk ~]<\/span># cat \/var\/named\/xyx.com.zone<\/span>
\n;<\/span> ==<\/span>==<\/span>==<\/span>==<\/span>==<\/span>==<\/span>==<\/span>==<\/span>==<\/span>==<\/span>==<\/span>==<\/span>==<\/span>==<\/span>==<\/span>==<\/span>==<\/span>==<\/span>==<\/span>==<\/span>==<\/span>==<\/span>==<\/span>==<\/span>==<\/span>==<\/span>==<\/span>==<\/span>==<\/span>==<\/span>
\n;<\/span> \u6587\u4ef6\u540d: \/var\/named\/xyx.com.zone
\n;<\/span> \u57df\u540d: xyx.com \u6b63\u5411\u89e3\u6790\u533a\u57df\u6587\u4ef6
\n;<\/span> \u7ef4\u62a4\u4eba: xyx
\n;<\/span> \u6700\u540e\u4fee\u6539: 2026<\/span>-08-05
\n;<\/span> ==<\/span>==<\/span>==<\/span>==<\/span>==<\/span>==<\/span>==<\/span>==<\/span>==<\/span>==<\/span>==<\/span>==<\/span>==<\/span>==<\/span>==<\/span>==<\/span>==<\/span>==<\/span>==<\/span>==<\/span>==<\/span>==<\/span>==<\/span>==<\/span>==<\/span>==<\/span>==<\/span>==<\/span>==<\/span>=<\/span><\/p>\n

$TTL<\/span> 36800<\/span>
\n@ IN SOA ns1.xyx.com. admin.xyx.com. (<\/span>
\n 2026080501<\/span> 3600<\/span> 1800<\/span> 327680<\/span> 43990<\/span>
\n)<\/span>
\n@ IN NS ns1.xyx.com.
\n@ IN A 10.0<\/span>.0.6
\nns1 IN A 10.0<\/span>.0.6
\nmyy IN A 10.0<\/span>.0.9
\nxyy IN A 10.0<\/span>.0.10
\nubt2604ser IN A 10.0<\/span>.0.4<\/p>\n

4\u3001\u9a8c\u8bc1\u548c\u542f\u52a8<\/h4>\n

#\u68c0\u67e5\u4e3b\u914d\u7f6e\u6587\u4ef6\u8bed\u6cd5<\/span>
\n[<\/span>root@rockydesk ~]<\/span># named-checkconf \/etc\/named.conf<\/span><\/p>\n

#\u68c0\u67e5\u533a\u57df\u6587\u4ef6\u8bed\u6cd5<\/span>
\n[<\/span>root@rockydesk ~]<\/span># named-checkzone xyx.com \/var\/named\/xyx.com.zone<\/span>
\nzone xyx.com\/IN: loaded serial 2026080501<\/span>
\nOK<\/p>\n

#\u4e0a\u9762\u5b89\u88c5\u65f6\u4ee5\u53ca\u542f\u52a8，\u6211\u8fd9\u8fb9\u91cd\u65b0\u52a0\u8f7d\u914d\u7f6e\u6587\u4ef6<\/span>
\n[<\/span>root@rockydesk ~]<\/span># systemctl reload named.service<\/span><\/p>\n

#\u9a8c\u8bc153\u7aef\u53e3 <\/span>
\n[<\/span>root@rockydesk ~]<\/span># ss -tunlp |grep :53<\/span>
\nudp UNCONN 0<\/span> 0<\/span> 10.0<\/span>.0.6:53 0.0<\/span>.0.0:* users:((<\/span>"named",<\/span>pid=<\/span>3943<\/span>,<\/span>fd=<\/span>41<\/span>))<\/span><\/span>
\nudp UNCONN 0<\/span> 0<\/span> 10.0<\/span>.0.6:53 0.0<\/span>.0.0:* users:((<\/span>"named",<\/span>pid=<\/span>3943<\/span>,<\/span>fd=<\/span>40<\/span>))<\/span><\/span>
\nudp UNCONN 0<\/span> 0<\/span> 127.0<\/span>.0.1:53 0.0<\/span>.0.0:* users:((<\/span>"named",<\/span>pid=<\/span>3943<\/span>,<\/span>fd=<\/span>25<\/span>))<\/span><\/span>
\nudp UNCONN 0<\/span> 0<\/span> 127.0<\/span>.0.1:53 0.0<\/span>.0.0:* users:((<\/span>"named",<\/span>pid=<\/span>3943<\/span>,<\/span>fd=<\/span>26<\/span>))<\/span><\/span>
\nudp UNCONN 0<\/span> 0<\/span> [<\/span>::1]<\/span>:53 [<\/span>::]<\/span>:* users:((<\/span>"named",<\/span>pid=<\/span>3943<\/span>,<\/span>fd=<\/span>32<\/span>))<\/span><\/span>
\nudp UNCONN 0<\/span> 0<\/span> [<\/span>::1]<\/span>:53 [<\/span>::]<\/span>:* users:((<\/span>"named",<\/span>pid=<\/span>3943<\/span>,<\/span>fd=<\/span>31<\/span>))<\/span><\/span>
\ntcp LISTEN 0<\/span> 10<\/span> 127.0<\/span>.0.1:53 0.0<\/span>.0.0:* users:((<\/span>"named",<\/span>pid=<\/span>3943<\/span>,<\/span>fd=<\/span>29<\/span>))<\/span><\/span>
\ntcp LISTEN 0<\/span> 10<\/span> 127.0<\/span>.0.1:53 0.0<\/span>.0.0:* users:((<\/span>"named",<\/span>pid=<\/span>3943<\/span>,<\/span>fd=<\/span>27<\/span>))<\/span><\/span>
\ntcp LISTEN 0<\/span> 10<\/span> 10.0<\/span>.0.6:53 0.0<\/span>.0.0:* users:((<\/span>"named",<\/span>pid=<\/span>3943<\/span>,<\/span>fd=<\/span>43<\/span>))<\/span><\/span>
\ntcp LISTEN 0<\/span> 10<\/span> 10.0<\/span>.0.6:53 0.0<\/span>.0.0:* users:((<\/span>"named",<\/span>pid=<\/span>3943<\/span>,<\/span>fd=<\/span>42<\/span>))<\/span><\/span>
\ntcp LISTEN 0<\/span> 10<\/span> [<\/span>::1]<\/span>:53 [<\/span>::]<\/span>:* users:((<\/span>"named",<\/span>pid=<\/span>3943<\/span>,<\/span>fd=<\/span>33<\/span>))<\/span><\/span>
\ntcp LISTEN 0<\/span> 10<\/span> [<\/span>::1]<\/span>:53 [<\/span>::]<\/span>:* users:((<\/span>"named",<\/span>pid=<\/span>3943<\/span>,<\/span>fd=<\/span>34<\/span>))<\/span><\/span> <\/p>\n

#\u6d4b\u8bd5\u89e3\u6790<\/span>
\n[<\/span>root@rockydesk ~]<\/span># dig @10.0.0.6 xyx.com A<\/span><\/p>\n

;<\/span> <<<\/span>>><\/span> DiG 9.18<\/span>.33 <<<\/span>>><\/span> @10.0.0.6 xyx.com A
\n;<\/span> (<\/span>1<\/span> server found)<\/span>
\n;<\/span>;<\/span> global options: +cmd
\n;<\/span>;<\/span> Got answer:
\n;<\/span>;<\/span> –>><\/span>HEADER<<-<\/span> opcode: QUERY, status: NOERROR, id: 53506<\/span>
\n;<\/span>;<\/span> flags: qr aa rd ra;<\/span> QUERY: 1<\/span>, ANSWER: 1<\/span>, AUTHORITY: 0<\/span>, ADDITIONAL: 1<\/span><\/p>\n

;<\/span>;<\/span> OPT PSEUDOSECTION:
\n;<\/span> EDNS: version: 0<\/span>, flags:;<\/span> udp: 1232<\/span>
\n;<\/span> COOKIE: 2d94296908891b44010000006a72ade9c05d5e68398f70e8 (<\/span>good)<\/span>
\n;<\/span>;<\/span> QUESTION SECTION:
\n;<\/span>xyx.com. IN A<\/p>\n

;<\/span>;<\/span> ANSWER SECTION:
\nxyx.com. 36800<\/span> IN A 10.0<\/span>.0.6<\/p>\n

;<\/span>;<\/span> Query time: 0<\/span> msec
\n;<\/span>;<\/span> SERVER: 10.0<\/span>.0.6#53(10.0.0.6) (UDP)<\/span>
\n;<\/span>;<\/span> WHEN: Wed Aug 05 11<\/span>:28:41 CST 2026<\/span>
\n;<\/span>;<\/span> MSG SIZE rcvd: 80<\/span><\/p>\n

5\u3001\u5ba2\u6237\u7aef\u6d4b\u8bd5<\/h4>\n

#Ubuntu\u5ba2\u6237\u7aef <\/span>
\nroot@ubt2604ser:~# vim \/etc\/netplan\/00-installer-config.yaml<\/span>
\nroot@ubt2604ser:~# cat \/etc\/netplan\/00-installer-config.yaml<\/span>
\n# This is the network config written by 'subiquity'<\/span>
\nnetwork:
\n ethernets:
\n ens32:
\n addresses:
\n – 10.0<\/span>.0.4\/24
\n dhcp6: true<\/span>
\n match:
\n macaddress: 00:0c:29:e9:1e:90
\n nameservers:
\n addresses:
\n – 10.0<\/span>.0.6
\n – 10.0<\/span>.0.2
\n search: [<\/span>]<\/span>
\n routes:
\n – to: default
\n via: 10.0<\/span>.0.2
\n set-name: ens32
\n version: 2<\/span><\/p>\n

root@ubt2604ser:~# netplan try<\/span>
\nroot@ubt2604ser:~# netplan apply<\/span>
\nroot@ubt2604ser:~# resolvectl status<\/span>
\nGlobal
\n Protocols: -LLMNR<\/span> -mDNS<\/span> -DNSOverTLS<\/span> DNSSEC<\/span>=<\/span>no\/unsupported
\n resolv.conf mode: stub<\/p>\n

Link 2<\/span> (<\/span>ens32)<\/span>
\n Current Scopes: DNS
\n Protocols: +DefaultRoute -LLMNR<\/span> -mDNS<\/span> -DNSOverTLS<\/span> DNSSEC<\/span>=<\/span>no\/unsupported
\nCurrent DNS Server: 10.0<\/span>.0.2
\n DNS Servers: 10.0<\/span>.0.6 10.0<\/span>.0.2
\n Default Route: yes<\/span><\/p>\n

#\u6216\u8005\u4f7f\u7528nmcli\u4fee\u6539dns<\/span>
\nroot@ubt2604ser:~# nmcli connection modify ens32 ipv4.dns "10.0.0.6"<\/span>
\nroot@ubt2604ser:~# nmcli connection reload<\/span><\/p>\n

#dig\u6d4b\u8bd5<\/span>
\nroot@ubt2604ser:~# dig @10.0.0.6 xyx.com +short<\/span>
\n10.0<\/span>.0.6
\nroot@ubt2604ser:~# dig @10.0.0.6 myy.xyx.com +short<\/span>
\n10.0<\/span>.0.9
\nroot@ubt2604ser:~# dig @10.0.0.6 xyy.xyx.com +short<\/span>
\n10.0<\/span>.0.10<\/p>\n

6\u3001\u9632\u706b\u5899\u914d\u7f6e<\/h4>\n

#\u5982\u679c\u6d4b\u8bd5\u65f6\u63d0\u793a\u53ef\u4ee5\u68c0\u67e5\u9632\u706b\u5899\u662f\u5426\u653e\u884cDNS\u670d\u52a1<\/span>
\nroot@ubt2604ser:~# dig @10.0.0.6 xyx.com A<\/span>
\n;<\/span>;<\/span> communications error to 10.0<\/span>.0.6#53: host unreachable<\/span>
\n;<\/span>;<\/span> communications error to 10.0<\/span>.0.6#53: host unreachable<\/span>
\n;<\/span>;<\/span> communications error to 10.0<\/span>.0.6#53: host unreachable<\/span><\/p>\n

;<\/span> <<<\/span>>><\/span> DiG 9.20<\/span>.18-1ubuntu2-Ubuntu <<<\/span>>><\/span> @10.0.0.6 xyx.com A
\n;<\/span> (<\/span>1<\/span> server found)<\/span>
\n;<\/span>;<\/span> global options: +cmd
\n;<\/span>;<\/span> no servers could be reached<\/p>\n

#rocky\u653e\u884c<\/span>
\n#\u6c38\u4e45\u653e\u884cDNS\u670d\u52a1\u6216\u800553\u7aef\u53e3\u4e8c\u9009\u5176\u4e00<\/span>
\n[<\/span>root@rockydesk ~]<\/span># firewall-cmd –permanent –add-service=dns<\/span>
\nsuccess<\/p>\n

[<\/span>root@rockydesk ~]<\/span># firewall-cmd –permanent –add-port=53\/tcp<\/span>
\nsuccess
\n[<\/span>root@rockydesk ~]<\/span># firewall-cmd –permanent –add-port=53\/udp<\/span>
\nsuccess<\/p>\n

#\u91cd\u65b0\u52a0\u8f7d<\/span>
\n[<\/span>root@rockydesk ~]<\/span># firewall-cmd –reload<\/span>
\nsuccess<\/p>\n

#\u9a8c\u8bc1<\/span>
\n[<\/span>root@rockydesk ~]<\/span># firewall-cmd –list-all<\/span>
\npublic (<\/span>default, active)<\/span>
\n target: default
\n ingress-priority: 0<\/span>
\n egress-priority: 0<\/span>
\n icmp-block-inversion: no
\n interfaces: ens160
\n sources:
\n services: cockpit dhcpv6-client dns ssh<\/span>
\n ports: 53<\/span>\/tcp 53<\/span>\/udp
\n protocols:
\n forward: yes<\/span>
\n masquerade: no
\n forward-ports:
\n source-ports:
\n icmp-blocks:
\n rich rules:
\n[<\/span>root@rockydesk ~]<\/span>#<\/span><\/p>\n

#Ubuntu\u653e\u884c<\/span><\/p>\n

root@ubt2604ser:~# ufw allow 53\/tcp<\/span>
\nRule added
\nRule added (<\/span>v6)<\/span>
\nroot@ubt2604ser:~# ufw allow 53\/udp<\/span>
\nRule added
\nRule added (<\/span>v6)<\/span>
\nroot@ubt2604ser:~# ufw reload<\/span>
\nFirewall reloaded
\nroot@ubt2604ser:~# ufw status numbered<\/span>
\nStatus: active<\/p>\n

To Action From
\n — —— —-
\n[<\/span> 1<\/span>]<\/span> 22<\/span> ALLOW IN Anywhere
\n[<\/span> 2<\/span>]<\/span> 53<\/span>\/tcp ALLOW IN Anywhere
\n[<\/span> 3<\/span>]<\/span> 53<\/span>\/udp ALLOW IN Anywhere
\n[<\/span> 4<\/span>]<\/span> 22<\/span> (<\/span>v6)<\/span> ALLOW IN Anywhere (<\/span>v6)<\/span>
\n[<\/span> 5<\/span>]<\/span> 53<\/span>\/tcp (<\/span>v6)<\/span> ALLOW IN Anywhere (<\/span>v6)<\/span>
\n[<\/span> 6<\/span>]<\/span> 53<\/span>\/udp (<\/span>v6)<\/span> ALLOW IN Anywhere (<\/span>v6)<\/span><\/p>\n

Action From
\n — —— —-<\/p>\n

[ 1] 22 ALLOW IN Anywhere [ 2] 53\/tcp ALLOW IN Anywhere [ 3] 53\/udp ALLOW IN Anywhere [ 4] 22 (v6) ALLOW IN Anywhere (v6) [ 5] 53\/tcp (v6) ALLOW IN Anywhere (v6) [ 6] 53\/udp (v6) ALLOW IN Anywhere (v6)<\/p>\n","protected":false},"excerpt":{"rendered":"

Linux\u5b66\u4e60\u4e4b\u65c5\u4e4bDNS\u57df\u540d\u7cfb\u7edf\u57fa\u672c\u8ba4\u77e5
\n\u4e00\u3001DNS \u57df\u540d\u7cfb\u7edf
\n1\u3001\u4ec0\u4e48\u662fdns DNS（Domain Name System，\u57df\u540d\u7cfb\u7edf），\u662f\u4e92\u8054\u7f51\u7684\u5730\u5740\u7ffb\u8bd1\u7cfb\u7edf\u3002 \u4f5c\u7528：\u628a\u4eba\u7c7b\u597d\u8bb0\u7684\u57df\u540d（\u5982 www.baidu.com）\u7ffb\u8bd1\u6210\u8ba1\u7b97\u673a\u80fd\u8bc6\u522b\u7684IP \u5730\u5740（\u5982 180.101.49.11），\u5b9e\u73b0\u4e0a\u7f51\u8bbf\u95ee\u3002 2\u3001\u67e5\u8be2\u6d41\u7a0b
\n\u8c46\u5305\u751f\u6210\u4ec5\u4f9b\u53c2<\/p>\n","protected":false},"author":2,"featured_media":91007,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[130,58,371,100,44],"topic":[],"class_list":["post-91008","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-chrome","tag-linux","tag-371","tag-100","tag-44"],"yoast_head":"\n17-Linux\u5b66\u4e60\u4e4b\u65c5\u4e4bDNS\u57df\u540d\u7cfb\u7edf\u57fa\u672c\u8ba4\u77e5 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/91008.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"17-Linux\u5b66\u4e60\u4e4b\u65c5\u4e4bDNS\u57df\u540d\u7cfb\u7edf\u57fa\u672c\u8ba4\u77e5 - 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