### Configure RAS Secure Client Gateway Network Options The Network tab page allows you to configure RAS Secure Client Gateway network options. By default a RAS Secure Client gateway listens on TCP ports 80 and 443 to tunnel all Parallels Remote Application Server traffic. To change the port, specify a new port in the RAS Secure Client Gateway Port input field. TCP port 3389 is used for clients that require basic load balanced desktop sessions. Connections on this port do NOT support published items. To change the RDP port on a gateway select the RDP Port option and specify a new port. Note: If RDP port is changed, the users need to append the port number to their connection string in the remote desktop client (e.g. `[ip address]:[port]`). To enable UDP tunneling on Windows devices, select the Enable RDP UDP Data Tunneling option (default). To disable UDP tunneling, clear this option. Select the Client Manager Port option to manage Windows devices from the Client Manager category. This option is enabled by default. The Enable RDP DOS Attack Filter option denies chains of uncompleted sessions from the same IP address. For example, if a Parallels Client attempts to connect to the Parallels RAS with incorrect credentials multiple times, Parallels RAS will deny further attempts. This option is enabled by default. The Broadcast RAS Secure Client Gateway Address option can be used to switch on the broadcasting of the gateway address, so Parallels Clients can automatically find their primary gateway. This option is enabled by default.