DNS BIND之dnssec安全实例配置-dev节点(dev.)

来源：互联网发布：王震对新疆的功过知乎编辑：程序博客网时间：2024/04/25 09:40

上一节我们演示了根节点的dnssec配置，下面我们配置dev节点的dnssec。

dev服务器：192.168.110.71

一、配置dev服务器
1.生成签名密钥对
# cd /var/named
首先为区（zone）文件生成密钥签名密钥KSK：
#~/bind/sbin/dnssec-keygen -f KSK -a RSASHA1 -b 512 -n ZONE dev.
将生成文件Kdev.+005+44248.key公钥和Kdev.+005+44248.private私钥
然后生成区签名密钥ZSK：
#~/bind/sbin/dnssec-keygen -a RSASHA1 -b 512 -n ZONE dev.
将生成文件Kdev.+005+41787.key公钥和Kdev.+005+44248.private私钥
2.签名zone
a.签名之前将前面生成的两个公钥添加到区域配置文件末尾

$TTL 86400@       IN      SOA     @       root.dev (                                                        2                                                        1m                                                        1m                                                        1m                                                        1m)dev.            IN              NS      ns.dev.ns.dev.         IN              A       192.168.110.71abc.dev.        IN              A       192.168.100.90$INCLUDE "Kdev.+005+41787.key"$INCLUDE "Kdev.+005+44248.key"

b.执行签名操作
#~/bind/sbin/dnssec-signzone -o dev. dev.zone
生成dev.zone.signed签名zone
3.修改主配置文件name.conf

key "rndc-key" {        algorithm hmac-md5;        secret "etMaaS+O06WFFUHxKAaTXA==";};controls {        inet 127.0.0.1 port 953                allow { 127.0.0.1; } keys { "rndc-key"; };};options{        listen-on port 53{                192.168.110.71;        };        version "vdns3.0";        directory "/var/named";        pid-file "/var/run/named.pid";        session-keyfile "/var/run/session.key";        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";        rrset-order {                 order cyclic;        };         recursion no;        allow-query{                any;        };        allow-query-cache{                any;        };        allow-transfer{                none;        };         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";};logging {         channel default_debug {                file "/var/named/data/named.run";                severity dynamic;        };        channel queries_info {                 file "/var/named/log/query.log" versions 1 size 100m;                 severity info;                 print-category yes;                 print-severity yes;                 print-time yes;         };          category queries {                 queries_info;                 default_debug;         };          channel notify_info {                 file "/var/named/log/notify.log" versions 8 size 128m;                 severity info;                 print-category yes;                 print-severity yes;                 print-time yes;         };          category notify {                 notify_info;                 default_debug;         };        channel dnssec_debug {                file "/var/named/log/dnssec.log" versions 1 size 100m;                print-time yes;                print-category yes;                print-severity yes;                severity debug 3;        };         category dnssec {                 dnssec_debug;         };}; zone "." in {        type hint;        file "root.zone";};zone "dev." IN {          type master;          file "dev.zone.signed";  };

检查配置是否正确：
/home/slim/bind/sbin/named-checkconf -t /home/slim/chroot/ /etc/named.conf

4.启动服务
/home/slim/bind/sbin/named -u slim -t /home/slim/chroot/ -c /etc/named.conf

二、配置根服务器
1.将生成的dsset-dev.发给根服务器，在192.168.110.71上执行
# cd /var/named
# scp dsset-dev. slim@192.168.13.103:/home/slim/chroot/var/named/
2.在192.168.13.103上执行
# cd /var/named
# vi root.zone

3.在该文件末尾添加 $INCLUDE "dsset-dev."

$TTL 86400@           IN   SOA    @       root (                                                        12169                                                        1m                                                        1m                                                        1m                                                        1m ).                       IN      NS      root.ns.root.ns.        IN      A       192.168.13.103dev.            IN      NS      ns.dev.ns.dev.         IN      A       192.168.110.71 $INCLUDE "K.+005+62541.key"$INCLUDE "K.+005+62317.key"$INCLUDE "dsset-dev."

4.然后在根服务器上重新对区文件进行签名
# mv root.zone.signed root.zone.signed.bak
# /home/slim/bind/sbin/dnssec-signzone -o . root.zone
5.重启根服务
三、测试
在递归解析服务执行：
dig @192.168.13.45 +dnssec dev. NS

; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.30.rc1.el6_6.2 <<>> @192.168.13.45 +dnssec dev. NS; (1 server found);; global options: +cmd;; Got answer:;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 49047;; flags: qr rd ra ad; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 3;; OPT PSEUDOSECTION:; EDNS: version: 0, flags: do; udp: 4096;; QUESTION SECTION:;dev.                           IN      NS;; ANSWER SECTION:dev.                    80410   IN      NS      ns.dev.dev.                    86386   IN      RRSIG   NS 5 1 86400 20150517074758 20150417074758 41787 dev. x3QO8JsFscxB7t9SQjtjdZCXyjUkdWNbCfOSUxPyZZPb3jRt/DOYN0lR hKJqgl8VT2T2D1P3kmr8O7ptGlTKpg==;; ADDITIONAL SECTION:ns.dev.                 80410   IN      A       192.168.110.71ns.dev.                 86386   IN      RRSIG   A 5 2 86400 20150517074758 20150417074758 41787 dev. a9f04XI5VUvgoDdJa5BoN3GEhA2Po+Iqo9GLgcw0S5Sts7Hw/dIm/EOF lj8oCXUniBgQdRzWw+0QzYvUavGYxg==;; Query time: 0 msec;; SERVER: 192.168.13.45#53(192.168.13.45);; WHEN: Fri Apr 17 02:05:49 2015;; MSG SIZE  rcvd: 263

dig @192.168.13.45 +dnssec abc.dev. A

; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.30.rc1.el6_6.2 <<>> @192.168.13.45 +dnssec abc.dev. A; (1 server found);; global options: +cmd;; Got answer:;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 20230;; flags: qr rd ra ad; QUERY: 1, ANSWER: 2, AUTHORITY: 2, ADDITIONAL: 3;; OPT PSEUDOSECTION:; EDNS: version: 0, flags: do; udp: 4096;; QUESTION SECTION:;abc.dev.                       IN      A;; ANSWER SECTION:abc.dev.                86375   IN      A       192.168.100.90abc.dev.                86375   IN      RRSIG   A 5 2 86400 20150517074758 20150417074758 41787 dev. aSP+yVyu83pPlwZ8iSoyFydzSOugMLnNV5ZcbObJ+U6qWj8j9AF4Baxy zxqKiSkTDkx16yjgnzdGINwfgFt1EA==;; AUTHORITY SECTION:dev.                    80152   IN      NS      ns.dev.dev.                    86128   IN      RRSIG   NS 5 1 86400 20150517074758 20150417074758 41787 dev. x3QO8JsFscxB7t9SQjtjdZCXyjUkdWNbCfOSUxPyZZPb3jRt/DOYN0lR hKJqgl8VT2T2D1P3kmr8O7ptGlTKpg==;; ADDITIONAL SECTION:ns.dev.                 80152   IN      A       192.168.110.71ns.dev.                 86375   IN      RRSIG   A 5 2 86400 20150517074758 20150417074758 41787 dev. a9f04XI5VUvgoDdJa5BoN3GEhA2Po+Iqo9GLgcw0S5Sts7Hw/dIm/EOF lj8oCXUniBgQdRzWw+0QzYvUavGYxg==;; Query time: 0 msec;; SERVER: 192.168.13.45#53(192.168.13.45);; WHEN: Fri Apr 17 02:10:07 2015;; MSG SIZE  rcvd: 382

注：配置具体域名的dnssec也是类型，生成zone签名，将dsset-*添加到上一节点zone中，并重新签名。

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