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joyharry_281042's avatar
joyharry_281042
Icon for Nimbostratus rankNimbostratus
Jul 22, 2016

How to Allow Underscore in HTTP Header?

Hello All,   I am working on the requirement to allow underscores in HTTP headers by default F5 does not allow it. Can anybody let me know what I need to do at the F5 end to allow underscores like...
BIG-IP
iRules
security
ekaleido_26616's avatar
ekaleido_26616
Icon for Cirrocumulus rankCirrocumulus
Jul 22, 2016

All you need to do to make this load balance properly is to apply a cookie persistence profile to your virtual server. In the virtual server you can configure it to insert X-Forwarded-For header as the URL requires. You do not need any special headers to achieve what that document describes.

 

joyharry_281042's avatar
joyharry_281042
Icon for Nimbostratus rankNimbostratus
Jul 22, 2016

Thanks for the response ekaleido.

 

https://www.ibm.com/support/knowledgecenter/SSRQBP_2.0.2/com.ibm.ispim.doc/installing/ref/r_load_balancer_settings.html

 

As mentioned in the URL it's a virtual appliance on which internally IBM HTTP server is running but virtual appliance is kind of black box thing where we can't make any changes to the web server or application server so whatever load balancer requirement are there we have to implement on the load balancer side. Can you please help how can I implement the requirements on load balancer side? We are able to insert X-Forwarded-For header but facing challenges to allow underscores in the request headers?