V2EX = way to explore
V2EX 是一个关于分享和探索的地方
现在注册
已注册用户请  登录
V2EX 提问指南
kincaid
V2EX  ›  问与答

bind9(递归)配置 ECS 不生效

  •  
  •   kincaid · 2022-03-23 13:17:15 +08:00 · 1010 次点击
    这是一个创建于 1010 天前的主题,其中的信息可能已经有所发展或是发生改变。

    最近在学习 dns 的相关知识,然后尝试用 bind 在内网搭建了一个递归 dns ,测试了一下解析什么的都正常,但是 ECS 似乎并不起作用,有大佬遇到过类似的情况嘛? bind9.16.x 和 bind9.18.x 都试过了

    测试结果

    dig www.taobao.com @127.0.0.1 -p 54 +subnet=202.96.64.68
    
    ; <<>> DiG 9.18.1-1+0~20220316.73+debian11~1.gbp965910-Debian <<>> www.taobao.com @127.0.0.1 -p 54 +subnet=202.96.64.68
    ;; global options: +cmd
    ;; Got answer:
    ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 33865
    ;; flags: qr rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 1
    
    ;; OPT PSEUDOSECTION:
    ; EDNS: version: 0, flags:; udp: 1232
    ; COOKIE: 5abbcad304b5d31c01000000623aaad500ab63c28430b13f (good)
    ; CLIENT-SUBNET: 202.96.64.68/32/0
    ;; QUESTION SECTION:
    ;www.taobao.com.                        IN      A
    
    ;; ANSWER SECTION:
    www.taobao.com.         600     IN      CNAME   www.taobao.com.danuoyi.tbcache.com.
    www.taobao.com.danuoyi.tbcache.com. 60 IN A     36.147.19.230
    www.taobao.com.danuoyi.tbcache.com. 60 IN A     36.147.19.231
    
    ;; Query time: 956 msec
    ;; SERVER: 127.0.0.1#54(127.0.0.1) (UDP)
    ;; WHEN: Wed Mar 23 13:06:29 CST 2022
    ;; MSG SIZE  rcvd: 163
    

    传了辽宁联通的 IP ,但返回仍是宽带出口 IP 查询的结果

    配置文件

    named.conf

    // This is the primary configuration file for the BIND DNS server named.
    //
    // Please read /usr/share/doc/bind9/README.Debian.gz for information on the 
    // structure of BIND configuration files in Debian, *BEFORE* you customize 
    // this configuration file.
    //
    // If you are just adding zones, please do that in /etc/bind/named.conf.local
    
    include "/etc/bind/named.conf.options";
    include "/etc/bind/named.conf.local";
    include "/etc/bind/named.conf.default-zones";
    

    named.conf.local

    //
    // Do any local configuration here
    //
    
    // Consider adding the 1918 zones here, if they are not used in your
    // organization
    //include "/etc/bind/zones.rfc1918";
    

    named.conf.options

    options {
    	directory "/var/cache/bind";
    
    	// If there is a firewall between you and nameservers you want
    	// to talk to, you may need to fix the firewall to allow multiple
    	// ports to talk.  See http://www.kb.cert.org/vuls/id/800113
    
    	// If your ISP provided one or more IP addresses for stable 
    	// nameservers, you probably want to use them as forwarders.  
    	// Uncomment the following block, and insert the addresses replacing 
    	// the all-0's placeholder.
    
    	// forwarders {
    	// 	0.0.0.0;
    	// };
    
    	//========================================================================
    	// If BIND logs error messages about the root key being expired,
    	// you will need to update your keys.  See https://www.isc.org/bind-keys
    	//========================================================================
    	dnssec-validation yes;
    	listen-on port 54 { any; };
    	listen-on-v6 port 54 { any; };
    };
    

    named.conf.default-zones

    // prime the server with knowledge of the root servers
    zone "." {
    	type hint;
    	file "/usr/share/dns/root.hints";
    };
    
    // be authoritative for the localhost forward and reverse zones, and for
    // broadcast zones as per RFC 1912
    
    zone "localhost" {
    	type master;
    	file "/etc/bind/db.local";
    };
    
    zone "127.in-addr.arpa" {
    	type master;
    	file "/etc/bind/db.127";
    };
    
    zone "0.in-addr.arpa" {
    	type master;
    	file "/etc/bind/db.0";
    };
    
    zone "255.in-addr.arpa" {
    	type master;
    	file "/etc/bind/db.255";
    };
    zone "in-addr.arpa" {
            type master;
            file "/etc/bind/in-addr.arpa";
    };
    
    zone "root.zone" {
            type master;
            file "/etc/bind/root.zone";
    };
    

    求各位大佬指教

    kincaid
        1
    kincaid  
    OP
       2022-03-23 16:53:13 +08:00
    看起来是 CLIENT-SUBNET 后面 /0 导致的,但是不清楚为什么会带上这个,试了 Powerdns 也会带这个
    关于   ·   帮助文档   ·   博客   ·   API   ·   FAQ   ·   实用小工具   ·   2730 人在线   最高记录 6679   ·     Select Language
    创意工作者们的社区
    World is powered by solitude
    VERSION: 3.9.8.5 · 23ms · UTC 11:40 · PVG 19:40 · LAX 03:40 · JFK 06:40
    Developed with CodeLauncher
    ♥ Do have faith in what you're doing.