Network Issue

[simonn]

Having an issue when connecting/inviting people to a party on MW2, my connection is fine in game etc but for some reason it just says it is unable to connect.

Any ideas?
Router settings?

Thanks in advance!

[johnboy1974]

sounds like a problem with the router firewall section. google nat 3 problems on ps3.

[simonn]

My NAT type is open.

[tonixi]

Let them invite you, some times it works