Forum Discussion
F5 XC and Azure FrontDoor
I am confused who sends traffic to whom?
Frond Door to XC or XC to Frond Door?
Client -> FD -> XC -> Origin
- Injeyan_KostasJun 16, 2025
Nacreous
Ok about Certificate, you have to use a new domain or subdomain in XC for which you will have a valid certificate in order Front Door to be able to send traffic to.
For clients identification indeed you need CDN to inject a header. But as of course this header might not be present in apps not using CDN, you have to use different load balancers.- JaZyJun 17, 2025
Cirrus
Injeyan_Kostas​ do you have some example of configuration where it works? Because I have new domain with valid certificate, for example "connect-from-fd.mydomain". I can connect from FD to the "connect-from-fd.mydomain" but such domain on LB has no routes. Purpose is only to establish connection. When application is requested it's just reports:
Your support ID is suportID
Error 421 - Misdirected Request
What is also strange I cannot find any log on LB related to this event so cannot check how requests looks like.I also tried to create route to forward traffic when host header is "connect-from-fd.mydomain" and overwrite host header to static value and route it to the correct origin but it result to same error with response code 421. And again no logs available.
- Injeyan_KostasJun 17, 2025
Nacreous
You should configure a route for this domain to your origin server.
Of course you can rewite host header if you origin server needs.
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