Not sure if this is the right place to post this, a friend of mine has set up internet access in his dad's hotel. They want to set up a payment system to let people pay to use the internet, the system assigns codes etc but they want to allow paypal as a payment method.

The system uses monowall (a cut down version of pfsense) as the firewall, does anyone know how to allow paypal through this, the problem is you cannot use the web address and have to use an ip address but it seems that paypal has several ip addresses as its always changing.

How can paypal be allowed through a firewall when the ip address changes.

any help appreciated.

Thanks