Forum Discussion

Qasim's avatar
Qasim
Icon for Cirrostratus rankCirrostratus
Jul 12, 2019

What LTM do to HTTP Header?

Hi,   I need to read up on LTMs as its a basic theory question but wondering if you can help me in the meanwhile: my understanding is that LTM receives traffic on a particular VIP, replaces the he...
  • Lee_Sutcliffe's avatar
    Lee_Sutcliffe
    Jul 12, 2019

    It's not something that can be turned on with a check box, you need to either:

    • Use and iRule (one above is not re-writing the Host)
    • Use a Local Traffic Policy
    • Use an HTTP profile to erase a header

     

    Are you sure F5 is rewriting the Host? Can you share you VS config?

Lee_Sutcliffe's avatar
Lee_Sutcliffe
Icon for Nacreous rankNacreous
Jul 12, 2019

F5 will not re-write a Host header by default, you would need to configure it to do so.

The default configuration would be

 

Client ((Host header some.host.com) -> VIP -> Pool (Host header some.host.com)

 

So in your example, NGINX could still do the header based routing