I have worked with dozens of consumer grade WiFi routers, and they have been really hit-or-miss with this, though it seems to be getting better. Example of issue: A device that can be discovered ...
I have a wireless network setup using a AP541N Cisco wireless access point. I can connect to shares from Finder with cmd+K over AFP and SMB to the NAS and I can get to the internet, but thats it. None ...