Wireless connection between Router and ASUS RT-N56U?

[AzraelCole]

Hi,

is it possible to establish a wireless connection between a router (Gigaset SE551) and an ASUS RT-N56U with activeted security?

I could handle the connection but with security deacitved ("open system"), but thats not the way I want.

In the Gigaset I added the ASUS's MAC address in the WDS page, and in the ASUS I added the Gigaset's MAC address in the "bridge" page.

Does anybody have a similar problem? Or an hint how I could handle this with activated security?
Is that even possible?

Thanks a lot!