Dynamically Control a Gateway/Firewall?

[chrisadragna]

I have the need to allow a user access to the internet based on a transaction:

1. Customer plugs in laptop
2. via DHCP he Receives 192.168.x.x IP address
3. Customer can only see local machines
4. Customer enters credit card (card is approved, etc.)
5. Now the customer has access to the internet

Is there a dynamically configurable firewall which will do this? Does anyone have experience with this?

Thank you.

Sincerely,
Chris Adragna

[daveyboy]

you don't want much, do you?

[chrisadragna]

I think I should clarify. The customer recieves an IP address automatically from a DHCP server.

BY DEFAULT: his machine can't get past the gateway/firewall.

Using PHP I can do the transaction (get his credit card number, etc.).

AFTER THAT: how do I configure the firewall to ALLOW his IP address to get past the gateway/firewall.

1. Is there a text file with an access list which I can write to?
2. Does the firewall need to be bounced to reload it?