During login, a host may perform a reverse lookup on the IP address of the source address on the packets it receives.

在登录期间，主机可能会对它收到的数据包的源地址的IP地址执行反向查找。

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Knowing this, imagine that an attacker constructs an ICMP echo message containing the spoofed source address of some arbitrary Host a, such as 192.168.2.2, in its header.

知道了这一点，假设攻击者构造了一条IC MP回应消息，它的头中包含伪造的任意主机a的源地址，如192.168.2.2。

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IP Address or Host Name of the source and DB2 servers.

源数据库和DB 2服务器的IP地址或主机名。

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