Media Center Extenders use network ports to communicate over the network with PCs running Microsoft Windows XP Media Center Edition 2005. The Media Center Extender applications using these ports may find themselves blocked by a firewall running on your Media Center PC.If you use a non-Microsoft firewall, you may need to manually configure your firewall to allow certain applications access to the ports. There are two different ways that a firewall vendor may ask you to configure the firewall.
- Some firewall vendors will want you to configure the firewall for the actual application; in other words, let the firewall know what application(s) can access the ports.
- Some firewall vendors may want you to configure the port or ports the application is using.
During the configuration process, you may also need to know what network the application or port needs to work with. In the configuration setting, a Local Subnet network means the application or port is for use on the local, or your “home,” network. Internet means the application will talk to other computers on the Internet. The following table shows the specific information you will need to configure some non-Microsoft firewalls for specific Media Center Extender applications.
| Application |
Protocol/Port |
Direction |
Network |
| ehshell.exe |
TCP 5555
UDP 7777 |
Inbound
Inbound |
Local Subnet
Local Subnet |
| Mcrdsvc.exe |
UDP 3776 |
Inbound |
Local Subnet |
| Svchost.exe |
UDP 1900
TCP 3390 |
Inbound
Inbound |
Local Subnet
Local Subnet
Local Subnet |
| MCXNetTw.exe |
Random |
Outbound |
Local Subnet |
| MCRMgr.exe |
TCP 3932 |
Outbound |
Local Subnet |
| Ehexthost.exe |
Random |
Outbound |
Internet |
The procedure for manually configuring a firewall is different for each firewall model and for each firewall manufacturer. For more information about how to configure your firewall, see your firewall documentation. |
