How to utilize username/password GET return from NoScript ABE

Question

First, apologies for the cryptic title - let me explain: I'm at an airport that offers free wifi after you watch an advertisement. I did so in Firefox 4 running NoScript. I allowed scripts globally to prevent any complications. the ad was over, and then I got this message:

I went into options and had to disable these ABE System preferences:

I'm reading up on ABE here, but my question is this: How, on a *NIX based system (OSX 10.6.8), could I have logged in with the information provided?

I want to learn more about how these redirect logins work... so anything connected to that idea will be a +1 in my book.

Answer 1

My guess is that the airport WiFi is tampering with your connection, making 'login.nomadix.com' point to a local address (ie one that belongs on a LAN). If 'airportwifi.com' points to an address that belongs on the general internet, then when airportwifi.com tries to send you to login.nomadix.com, ABE will assume that a website is trying to attack your LAN, so it blocks the request.

Instead of switching ABE off, you could modify the rule to trust the airport:
Site LOCAL
Accept from LOCAL http://airportwifi.com
Deny