自从评论加了验证码以后,trackback被很多人充分的利用来发送垃圾外链。
(SEO学科中,垃圾外链花费的力气和回报其实不成正比,这些人不会算账)
trackback我们可以在 wordpress的后台来关闭。但是关闭以后,之前发布的文章依旧没有关闭这个功能,所以可能继续会收到别人的垃圾引用。
先看一下他们是如何发送trackback 的。
后台日志显示为调用一个地址如/abc/trackback/ 向这里POST一个请求。
wordpress系统包含了如何给对方发送一个trackback,具体代码不研究了。看一眼发送文章的时候如何给别人发送一个trackback.
每条日志都在发送的时候,有一个字段来控制是否本篇日志接受trackback.这很好的解释了为什么后台关闭trackback功能以后,仅仅对后面的文章起作用。
那么如何让之前的文章也关闭trackback就使问题迎刃而解了。
跑到数据库里执行如下语句。
UPDATE wp_posts SET 'ping_status' = 'closed';
良好的沟通协议,被垃圾外链搞的乱七八糟,只好关闭了。
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