Re: HTTP header to insert for SSL offload

"Rosenberry, Eric" <[email protected]>
Newsgroups gmane.comp.programming.load-balancing.general
Message-ID <[email protected]>
We are using F5's.

The application is written in house, so the developer just coded it for me as SSL_OFFLOAD:TRUE

(and I made him put that value into a config file so that we can change it if need be)

-Eric

From: [email protected] [mailto:[email protected]] On Behalf Of Tony Bourke
Sent: Monday, April 27, 2009 5:20 PM
To: Load Balancing Mailing List
Subject: Re: [load balancing] HTTP header to insert for SSL offload

Hi Eric,

Great to see a fellow Portlander on the list.

I'm not aware if there's a standard header, but SSL_OFFLOAD seems reasonable.  The real trick is if the application knows to look for that, or any other header, in order to trigger link creation with https://.  Some web apps, like Microsoft OWA, don't, and instead use a registry setting: http://support.microsoft.com/kb/327800

What load balancer are you using?  Some will intercept the HTTP content going back to the client and re-write URLs with HTTPS.

Tony


On Apr 27, 2009, at 4:22 PM, Rosenberry, Eric wrote:


We are having a problem with a new application being written in house whereby the application generates all redirects with http:// links instead of https:// links.  The application has no idea that it is being front-ended by a SSL offloading load balancer.

The solution I find out on the Internet is to have the load balancer insert some kind of header into each request to tell the application to generate all redirects with https:// instead of http.

My question to the list:  Is there a standard header recommended for this purpose, or does everyone make up their own?  I see several references to this online.  I believe Citrix recommends "SSL_OFFLOAD".

Any suggestions?

Thanks!

-Eric
_______________________________________________________________
Eric Rosenberry
Sr. Network Engineer | Chief Bit Plumber
Direct +1. 503.943.6763 | Mobile: +1.503.348.3625 | Fax: +1.503.224.1581


iovation
111 SW Fifth Avenue
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Portland, OR 97204
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