Originally Posted by stufried
It is not a free solution, but sign up for a Canadian VPN with blacklogic.com. You'll need to run the connection through your Macbook. If Rogers is using IP filtering, it will get you around it. If Brazil is using VOIP blockiing it will also help, but most blocking technology doesn't target UMA. UMA doesn't have huge market penetration and the protocol looks IPSEC.
Blacklogic isn't the only VPN service offering a Canadian server. It is just the one I knew off my head.
That's a fantastic idea!
One thing I discovered the other day is that certain DNS servers can prevent UMA. I was using Google's DNS servers on my home router and could not make a UMA connection. I changed them back to be received from the ISP's DHCP server and it started working again.