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Accepted
Tom
Asked: 2012-03-06 10:13:02 +0800 CST

How do I prevent a foreign domain pointing to my server's IP from loading my website?

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I have found that a random domain has set its DNS records to point to my server's IP address, which is a HAProxy load balancer in front of 4 apache servers. How do I prevent HAProxy from accepting requests from this domain, and only allowing requests to the legitimate domain?

Thanks

domain-name-system haproxy

2 Answers

  1. Filter on the value of the Host HTTP header, e.g. hdr(Host) -i myhost.example.tld.

    • 7
  2. Best Answer

    In the frontend definition in your HAProxy config:

    frontend bla bla bla
<other settings>

#all HTTP traffic must use the correct site name
acl host-mysite hdr(Host) -i mysite.example.com
redirect location http://mysite.example.com/ if !host-mysite

<more settings for frontend>

backend foo
<backend config>

    You could also outright block it if you prefer by using:

    #block if request isn't for mysite
acl host-mysite hdr(Host) -i mysite.example.com
block if !host-mysite
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