Require specific HTTP ports
By default, Cloudflare allows requests on a number of different HTTP ports (refer to Network ports .
You can target requests based on their HTTP port with the cf.edge.server_port
dynamic field
.
Use the in
comparison operator
to target a set of ports.
This example blocks requests to www.example.com that are not on ports 80 or 443:
| Expression | Action |
|---|---|
http.host eq "www.example.com" and not cf.edge.server_port in {80 443}
|
Block |