diff --git a/translated/tech/How to Setup Bind Chroot DNS Server on CentOS 7.0 VPS.md b/translated/tech/How to Setup Bind Chroot DNS Server on CentOS 7.0 VPS.md new file mode 100644 index 0000000000..0df194fe17 --- /dev/null +++ b/translated/tech/How to Setup Bind Chroot DNS Server on CentOS 7.0 VPS.md @@ -0,0 +1,201 @@ +在CentOS7.0 VPS上搭建 Bind Chroot DNS 服务器 +==================== + +BIND(Berkeley internet Name Daemon)也叫做NAMED是现今互联网上使用最为广泛的DNS 服务器程序。这篇文章将要讲述如何在 chroot jail (chroot “监牢”,所谓“监牢”就是指通过chroot机制来更改某个进程所能看到的根目录,即将某进程限制在指定目录中,保证该进程只能对该目录及其子目录的文件有所动作,从而保证整个服务器的安全)中运行 BIND,这样它就无法访问文件系统中除“jail”以外的其它部分。例如,在这篇文章中,我会将BIND的运行根目录改为/var/named/chroot/。当然,对于BIND来说,这个目录就是/(根目录)。 “jail”(监牢,下同)是一个软件机制,其功能是使得某个程序无法访问规定区域之外的资源,同样也为了增强安全性。Bind Chroot DNS 服务器的默认“jail”为/var/named/chroot。你可以按照下列步骤,在CentOS 7.0 虚拟专用服务器(VPS)上部署 Bind Chroot DNS 服务器。 + + 1. 安装Bind Chroot DNS 服务器: + + [root@centos7 ~]# yum install bind-chroot bind -y + + 2. 拷贝bind相关文件,准备bind chroot 环境 + + [root@centos7 ~]# cp -R /usr/share/doc/bind-*/sample/var/named/* /var/named/chroot/var/named/ + + 3. 在bind chroot 的目录中创建相关文件 + + [root@centos7 ~]# touch /var/named/chroot/var/named/data/cache_dump.db + + [root@centos7 ~]# touch /var/named/chroot/var/named/data/named_stats.txt + + [root@centos7 ~]# touch /var/named/chroot/var/named/data/named_mem_stats.txt + + [root@centos7 ~]# touch /var/named/chroot/var/named/data/named.run + + [root@centos7 ~]# mkdir /var/named/chroot/var/named/dynamic + + [root@centos7 ~]# touch /var/named/chroot/var/named/dynamic/managed-keys.bind + + + 4. 将 Bind 锁定文件设置为可写: + + [root@centos7 ~]# chmod -R 777 /var/named/chroot/var/named/data + [root@centos7 ~]# chmod -R 777 /var/named/chroot/var/named/dynamic + + 5. 将 /etc/named.conf 拷贝到 bind chroot目录 + + [root@centos7 ~]# cp -p /etc/named.conf /var/named/chroot/etc/named.conf + + 6. 在/etc/named.conf中对 bind 进行配置。在文件尾添加 example.local 域信息: + + [root@centos7 ~]# vi /var/named/chroot/etc/named.conf + +在 named.conf 中创建转发域(Forward Zone)与反向域(Reverse Zone): + + + .. + .. + zone "example.local" { + type master; + file "example.local.zone"; + }; + + zone "0.168.192.in-addr.arpa" IN { + type master; + file "192.168.0.zone"; + }; + .. + .. + +named.conf 完全配置 + + // + // named.conf + // + // 由Red Hat提供,将 ISC BIND named(8) DNS服务器 + // 配置为暂存域名服务器 (用来做本地DNS解析). + // + // See /usr/share/doc/bind*/sample/ for example named configuration files. + // + + options { + listen-on port 53 { any; }; + 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 { any; }; + + /* + - 如果你要建立一个 授权域名服务器 服务器, 那么不要开启 recursion(递归) 功能。 + - 如果你要建立一个 递归 DNS 服务器, 那么需要开启recursion 功能。 + - 如果你的递归DNS服务器有公网IP地址, 你必须开启访问控制功能, + 只有那些合法用户才可以发询问. 如果不这么做的话,那么你的服 + 服务就会受到DNS 放大攻击。实现BCP38将有效抵御这类攻击。 + */ + 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 "example.local" { + type master; + file "example.local.zone"; + }; + + zone "0.168.192.in-addr.arpa" IN { + type master; + file "192.168.0.zone"; + }; + + include "/etc/named.rfc1912.zones"; + include "/etc/named.root.key"; + + 7. 为 example.local 域名创建转发域与反向域文件 + +a)创建转发域 + + [root@centos7 ~]# vi /var/named/chroot/var/named/example.local.zone + +添加如下内容并保存: + + ; + ; Addresses and other host information. + ; + $TTL 86400 + @ IN SOA example.local. hostmaster.example.local. ( + 2014101901 ; Serial + 43200 ; Refresh + 3600 ; Retry + 3600000 ; Expire + 2592000 ) ; Minimum + + ; Define the nameservers and the mail servers + + IN NS ns1.example.local. + IN NS ns2.example.local. + IN A 192.168.0.70 + IN MX 10 mx.example.local. + + centos7 IN A 192.168.0.70 + mx IN A 192.168.0.50 + ns1 IN A 192.168.0.70 + ns2 IN A 192.168.0.80 + +b)创建反向域 + + [root@centos7 ~]# vi /var/named/chroot/var/named/192.168.0.zone + +---- + + ; + ; Addresses and other host information. + ; + $TTL 86400 + @ IN SOA example.local. hostmaster.example.local. ( + 2014101901 ; Serial + 43200 ; Refresh + 3600 ; Retry + 3600000 ; Expire + 2592000 ) ; Minimum + + 0.168.192.in-addr.arpa. IN NS centos7.example.local. + + 70.0.168.192.in-addr.arpa. IN PTR mx.example.local. + 70.0.168.192.in-addr.arpa. IN PTR ns1.example.local. + 80.0.168.192.in-addr.arpa. IN PTR ns2.example.local.。开机自启动 bind-chroot 服务: + + [root@centos7 ~]# /usr/libexec/setup-named-chroot.sh /var/named/chroot on + [root@centos7 ~]# systemctl stop named + [root@centos7 ~]# systemctl disable named + [root@centos7 ~]# systemctl start named-chroot + [root@centos7 ~]# systemctl enable named-chroot + ln -s '/usr/lib/systemd/system/named-chroot.service' '/etc/systemd/system/multi-user.target.wants/named-chroot.service' + +[跳转到档案页,阅读更多文章][1] + +------------------ + +via: http://www.ehowstuff.com/how-to-setup-bind-chroot-dns-server-on-centos-7-0-vps/ + +作者:[skytech][a] +译者:[SPccman](https://github.com/译者ID) +校对:[校对者ID](https://github.com/校对者ID) + +本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创翻译,[Linux中国](http://linux.cn/) 荣誉推出 + +[a]:http://www.ehowstuff.com/author/mhstar/ +[1]:http://www.ehowstuff.com/archives/ +