wpcomments post.php,垃圾评论带来的流量流失
11月底收到一条短信提示，
说空间流量在月底前用光了，
之前每个月的流量最多用掉50%，
真实访问量没有增加的前提下怎么会20天用掉7.5G的流量，
因为11月底换了新空间，新空间的月流量为15G，
所以对于流量的流失也没有太在意，
谁换到新空间以后流量跑的更惊人了。
12月3日竟然一天跑掉将近1G的流量，
长此以往有100g流量也不够用啊，
所以开始着手研究流量为什么跑掉。
流量为什么跑掉
还好，用的空间给提供最近3天的主机日志，
通过日志发现，流量是被来自福建莆田的一个不停更换ip地址的服务器每天数十万次垃圾请求给好用光的。
目测这个服务器是在一个拨号网络中，每隔一段时间会自动重新拨号以更换IP。
这台主机每天访问我的网站大概有30w次以上。
以下是截取了每天访问日志的冰山一角
59.58.159.32 [04/Dec/2013:14:55:18 GET /wordpress-ajax-comment-post
59.58.159.32 [04/Dec/2013:14:55:19] GET /wordpress-ajax-comment-post
59.58.159.32 [04/Dec/2013:14:55:19] GET /play-flv-in-html/
59.58.159.32 [04/Dec/2013:14:55:19] GET /play-flv-in-html
59.58.159.32 [04/Dec/2013:14:55:19] POST /wp-comments-post.php
59.58.159.32 [04/Dec/2013:14:55:19] GET /wordpress-ajax-comment-post/
59.58.159.32 [04/Dec/2013:14:55:19] GET /jquery-ctrl-enter-submit-form HTTP/1.1
59.58.159.32 [04/Dec/2013:14:55:19 POST /wp-comments-post.php
整个过程很简单，其实就是探测你当前的页面看看，然后再到你的评论提交页面提交垃圾评论。
这样很不容易被认定为是攻击访问。
从wp-comments-post.php入手
因为当前自制的主题是ajax提交评论的，所以对WordPress 自带的评论提交没有需求，
所以开始的时候我是直接将该页面删除了。
结果，所有请求都跳转到主题404页面，流量流失的更惨重了，所以失败！
从.htaccess入手
经过几番波折打算用.htaccess直接暴力屏蔽掉所有来自福建莆田的页面请求
这次流量下降明显，每天的流量降至300M多，每个月差不多也就10G左右的流量，
还是能够接受的。
具体的做法就是利用设置屏蔽来自福建莆田的几个IP段的请求，将请求都转至403页面
下面把.htaccess文件共享出来顺便感谢一下原作者
非黑白的生活-> 《垃圾来袭》
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