Yes, I saw that article, but it only states what ports are required for connection to a PC. I would like to know what ports are required for connection via internet to the TiVo server. I did see this one
Outbound to the Internet, you should allow connections to TCP ports 80 and 8080 and UDP port 123.
I assume that's outgoing to the mentioned ports from 1024:65535 and incoming from those ports to 1024:65535. I'm using a Linux firewall on my personal network that's pretty strict. I've been using rules that are very specific. I want to open stuff up as little as possible. Worse comes to worst, I'll just check the packet logs. Hopefully, I'll find the TiVo a firewall friendly device.