I have a machine running Windows Server 2003 using a wireless network (D-Link) card in my basement. Even though it has a live connection to the Internet, sometimes it does not allow me to connect to its network shares or remote desktop into the machine.
What I do not get about this is that the issue is intermittent. The Internet connection does not get interrupted. However, sometimes it will allow me to connect to it from other computers on the network and sometimes it will not. Nothing changes on the machine, at least nothing that I am doing. I don't log on to it physically unless I'm troubleshooting it.
Does anyone have any ideas about what might be occurring? It should not be the firewall, because sometimes it works without changing anything.
EDIT: The wireless network card is not the only NIC. It has multiple Ethernet NICs. I use a Linksys home wireless router. I also cannot access the machine via IP address.