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百度蜘蛛域名为何不给反向验证?
aaa0009
·
Aug 10, 2016
· 1868 views
This topic created in 3569 days ago, the information mentioned may be changed or developed.
要验证蜘蛛需要双向验证,从 ip 到 hostname ,然后冲 hostname 到 ip ,都匹配了才可以认为是真实的蜘蛛。然而为何,百度蜘蛛 hostname 不给 ip 呢?比如 180.76.15.159 可以得到
baiduspider-180-76-15-159.crawl.baidu.com
,然后
baiduspider-180-76-15-159.crawl.baidu.com
得不到 180.76.15.159
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蜘蛛
hostname
180.76.15.159
验证
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