can't work with firwall software

enabling firewall applications on your pc may cause the upnp function not working properly. this is because these kind of applications will block the accessing ability of some network ports.

security considerations

activating the upnp function on your network may incur some security threats. you should consider carefully these risks before activating the upnp function.

1.some microsoft operating systems have found out the upnp weaknesses and hence you need to ensure that you have applied the latest service packs and patches.

2.non-privileged users can control some router functions, including removing and adding port mappings.

3.the upnp function dynamically adds port mappings on behalf of some upnp-aware applications. when the applications terminate abnornmally, these mappings may not be removed.

more information about the configuration please refer to the upnp manual.