1. Stealth Mode
   • Just like "Enable Stealth Mode" in Tiger: "Ensures that any uninvited traffic receives no response - not even an acknowledgement that your computer exists."
   • Demand is apparent
   • Offered by virtually every other consumer-grade router. Here's a port scan on the $51.99 Linksys WRT54GL:
     
     
     
     And here's one run against the $299 Time Capsule:
     
2. Stateful Packet Inspection (SPI)
3. Dynamic DNS (DDNS) support

/mac | Jul 05, 2008