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Rusty_M_140798's avatar
Rusty_M_140798
Icon for Nimbostratus rankNimbostratus
Apr 20, 2017

Change URL host without chaining in the User browser

I have request to publish one of our internal applications that is on a .local domain to be public facing on a .com domain. The team is not willing to change the URL and internal users use the .local URL but external users will use the .com.

 

Below is the flow I am looking to achieve, I am looking for F5 to proxy the connection and SSL offload. I cannot do a redirect as the .local is not reachable externally. I did the basic setup of setting up a VIP and SSL offloading with a pool going to the internal IP, it fails if I use just the site.

 

Inbound mysite.com --> F5 VIP --> mysite.local

 

This does work for external users but I am getting errors in the application where it is receiving the mysite.com address? I need the app to see the internal mysite.local from F5.

 

application delivery
devops
iRules
LTM
  • Michael_Jenkins's avatar
    Michael_Jenkins
    Icon for Cirrostratus rankCirrostratus
    Apr 27, 2017

    Sounds like you may want to look at using a stream profile to perform some custom rewriting on the response since the application requires the .local address, as well as changing the 

    Host
    header on the request as it comes through. This may help...

     Example which replaces xyz.local with xyz.com in response content
 Prevents server compression in responses
when HTTP_REQUEST {
    Change the Host header to the internal value 
   HTTP::host "xyz.local"

    Disable the stream until we're ready
   STREAM::disable

    You always need to make sure the response content is uncompressed, so the data can be properly modified
   HTTP::header remove "Accept-Encoding"
}
when HTTP_RESPONSE {
    Typically you may only want to rewrite certain content types (like text or html)
   if {[HTTP::header value Content-Type] contains "text"}{
       Replace the values for xyz.local with xyz.com
      STREAM::expression {@xyz.local@xyz.com@}

       You may consider using this instead for multiple rewrites (or ensuring a url reference
      STREAM::expression {@://xyz.local@://xyz.com@ @://www.xyz.local@://www.xyz.com@ @}

       Enable the stream for this response
      STREAM::enable
   }
}

    Hope this helps.

  • Stanislas_Piro2's avatar
    Stanislas_Piro2
    Icon for Cumulonimbus rankCumulonimbus
    Apr 27, 2017

    Hi Rusty,

    you can use rewrite profile which is created to do it. create one rewrite rule:

    • direction : both (if server response does not include internal link, use 
      request
      for performance improvement)
    • client url: https://mysite.com/
    • server url :

    and assign it to the VS.