求教 dns 劫持的原理与实现 - V2EX
chiarex

求教 dns 劫持的原理与实现

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  •   chiarex May 21, 2015 3563 views
    This topic created in 4016 days ago, the information mentioned may be changed or developed.

    用了移动的宽带,一分钱确实是一分货啊,所有能被劫持的网站都加了移动的广告链接。
    想咨询下大家这个劫持和跳转是怎么实现的呢?怎么能够避免?
    如果自己也搞一个局域网的小型劫持要如何操作呢?谢谢大家!

    7 replies    2015-05-25 15:04:52 +08:00
    ryd994
        1
    ryd994  
       May 22, 2015 via Android
    先要搭一个反代,和一个DNS服务器
    对要劫持的域名添加DNS规则指向反代,这样DNS就不会向上游DNS查询,而是直接返回结果
    反代的DNS别配置错了
    有必要的话加iptables DNAT udp53彻底劫持对其他DNS服务器的查询
    xiaojj
        2
    xiaojj  
       May 22, 2015
    @ryd994 dns已经设置成114这种了,我这边电信还能插广告,这又是什么原理
    qq651438555
        3
    qq651438555  
       May 22, 2015
    这么厉害
    dreammes
        4
    dreammes  
       May 22, 2015 via Android
    求方法
    processzzp
        5
    processzzp  
       May 22, 2015 via Android
    @xiaojj
    @qq651438555
    @dreammes
    http://security.tencent.com/index.php/blog/msg/10
    整个网络都在ISP手里,想干点什么还不容易?
    ryd994
        6
    ryd994  
       May 22, 2015
    @xiaojj DNAT udp53劫持一切dns包即可
    scarecrow
        7
    scarecrow  
       May 25, 2015   1
    一个防止DNS污染和劫持的例子: https://github.com/examplecode/gfw_dns_resolver
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