How helpful would it be to whitelist values of the HTTP Host Header?

Free Modsecurity rules - Comodo Web Application Fi
1

Would if be useful if a file with the list of allowed values for the Host header were included in Comodo WAF?

For example, if we used a list of allowed hosts, like so,


127.0.0.1
localhost
example.com

It would only allow requests with the host header set to 127.0.0.1, localhost or example.com to be processed while others would be rejected.