about cloudflare lb origin server ip

[lofty oak]

let's say I have a origin server 1231.123.12.3123:3000 , 1231.123.12.3123:3001 it has 2 ports open can I use loadblacner to connect to a port ? or it's only connect to ip ?

[twilit karma]

You can override the destination port with an Origin Rule

this applies for Load Balancers too, I just tested.

[lofty oak]

this port have be in range of 30000-32767

I want this range for k8s

or only cloudfalre allowed ports

[twilit karma]

I mean Origin Rules can only send to a single specific port, but Origin Rules do allow you to override to any port yea, doesn't have to be Cloudflare supported. Users wouldn't connect over that port though, they'd connect over one of the supported ones
User -> CF on 443 -> Origin on 30000

[lofty oak]

free tier has 10 rules does that mean I can only put 10 servers?