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root@kali:~# fierce -dns cloudcentrics.com DNS Servers for cloudcentrics.com:         dns2.name-services.com         dns3.name-services.com         dns4.name-services.com         dns5.name-services.com         dns1.name-services.com Trying zone transfer first...         Testing dns2.name-services.com                 Request timed out or transfer not allowed.         Testing dns3.name-services.com                 Request timed out or transfer not allowed.         Testing dns4.name-services.com                 Request timed out or transfer not allowed.         Testing dns5.name-services.com                 Request timed out or transfer not allowed.         Testing dns1.name-services.com                 Request timed out or transfer not allowed. Unsuccessful in zone transfer (it was worth a shot) Okay, trying the good old fashioned way... brute force Checking for wildcard DNS...         ** Found 96446437507.cloudcentrics.com at 8.5.1.45.         ** High probability of wildcard DNS. Now performing 2280 test(s)... 用指定了字典的话，Fierce会尝试暴力枚举区域传送。因为本节目的是决定该域中都有哪些主机。 现在可以瞄准特定主机，用类似Nmap这样的工具来仔细测试目的，使用Fierce好处可以减少网络 流量，避免被发现。

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