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Bonus TIPS for Successful Posting

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DNS - redirect to different server

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    DNS - redirect to different server

    This is not an Alpha Five question at all. Any DNS experts here?

    I want to point http://forum.mydomain.com to http://www.myotherdomain.com/forum. These are two different servers. I have access to the DNS administration on both domains, and have Apache on the "mydomain.com" server.

    I can get close, in fact I can make it work using a RewriteRule in Apache, but the URL ends up showing the redirected location (myoherdomain.com). What I want is for the URL to stay as forum.mydomain.com BUT be pointing to the other domain.
    Steve Wood
    See my profile on IADN


    #2
    Re: DNS - redirect to different server

    Might be to simple an answer Steve, but have tried to just use html redirect in the index.html page?

    Also my ISP has it tucked away if one of the url's are parked it will work & they also have a url redirtect tab.
    Insanity: doing the same thing over and over again and expecting different results.
    Albert Einstein, (attributed)
    US (German-born) physicist (1879 - 1955)

    Comment


      #3
      Re: DNS - redirect to different server

      Hi Steve

      I agree with Pete. Some ISP's do allow one to change the DNS records or you can ask them to do it for you. The DNS records to change are. The *, @ and www entries.


      Peter

      Comment


        #4
        Re: DNS - redirect to different server

        DNS only resolves a host name to an IP address, there are no URL paths involved. To hide the ultimate URL when it includes a path, frames or iframes are typically used. In this case, http://forum.mydomain.com would serve up a page with a frame/iframe pointing at http://www.myotherdomain.com/forum

        If you could instead set up the second server to respond to http://myforum.myotherdomain.com, all you would need to use is a DNS CNAME record and http://forum.mydomain.com would remain in the browser's address bar.

        Lenny Forziati
        Vice President, Internet Products and Technical Services
        Alpha Software Corporation

        Comment


          #5
          Re: DNS - redirect to different server

          Thanks - I am trying all of this. I did set up my page in an iFrame and, with some javascript to adjust page height, it seems to work. I was concerned that this would place load on the page with the iFrame.

          Could you elaborate on the second suggestion? Would the CNAME in the example go on the DNS for mydomain, or myotherdomain (where the forum actually resides)?
          Steve Wood
          See my profile on IADN

          Comment


            #6
            Re: DNS - redirect to different server

            Originally posted by Steve Wood View Post
            Could you elaborate on the second suggestion? Would the CNAME in the example go on the DNS for mydomain, or myotherdomain (where the forum actually resides)?
            The second suggestion would be preferable, because
            1. Many common browsers protect against XSS by blocking third-party cookies - a cookie set by a domain other than what is shown in the address bar.
            2. It eliminates any load at all on the mydomain.com web server, even though the load should be fairly light.


            The CNAME is set up in the DNS for mydomain.com.

            A real world example of this configuration is Alpha's blog. Like many companies and individuals, we use blogger instead of reinventing the wheel and building our own blog, but http://alphasoftware.blogspot.com looks unprofessional since our company domain is alphasoftware.com. That URL works, but we've also set it up to work as http://blog.alphasoftware.com and that is the official URL we publish for the location of our blog. (This also would let us change the actual blog hosting provider without changing the URL at all if desired.)

            The alphasoftware.com DNS simply has a CNAME entry for blog.alphasoftware.com that points it to the blogger server. While we were at it, we also set up a CNAME for www.blog.alphasoftware.com just to cover anyone that always adds www. to any and all URLs and I recommend that others do the same. There are far more users that do this than most would expect.

            In the case of blogger, there was also a blogger-specific setting that we had to change in their interface so it would recognize our domain name because they have you redirect to the generic host ghs.google.com as opposed to a hostname that includes your actual target (i.e. alphasoftware.blogger.com). In the more common scenario, your CNAME points to a specific URL and there are no settings needed on the second domain's web or DNS servers. Even in the slightly different case of blogger, there was no DNS change made at the blogger level.

            Lenny Forziati
            Vice President, Internet Products and Technical Services
            Alpha Software Corporation

            Comment


              #7
              Re: DNS - redirect to different server

              Lenny, that worked perfectly. Funny, my server provider suggested I NOT use CNAME and use Apache .htaccess instead.
              Steve Wood
              See my profile on IADN

              Comment

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