由于应用了hosts . allow文件中的规则，来自主机dev01的用户的连接尝试被拒绝，其消息如下。
A blocked attempt by a user from the host dev01, via the rules applied in the hosts.allow file, could be.
全部其他的连接拒绝啦，既然为些都是多余的…如果它不能在主机模式里进行任何匹配，一个连接始终将被拒绝。
All other connections are rejected by the - term, which is actually redundant in this case - a connection will always be rejected if it doesn't match anything in the Hosts pattern.
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