You have a VPN server that runs Windows Server 2003 Service Pack 2 （SP2）. The VPN server is configured to have a static IP address pool. 
The IP address range is 10.10.10.1 to 10.10.10.200. All clients connect to the server by using PPTP.You discover that the VPN server supports only five concurrent VPN connections. You need to ensure that the VPN server supports 100 concurrent VPN connections. 
What should you do？（）

You have a VPN server that runs Windows Server 2003 Service Pack 2 （SP2）. The VPN server supports only PPTP connections. A firewall protects the VPN server from the Internet. From a remote computer connected to the Internet， you attempt to connect to the VPN server. During the connection attempt， you receive a message that your user name and password are being verified. You then receive the following error message： “Error 721： The remote computer is not responding.”You need to ensure that you can establish a VPN connection to the VPN server from the Internet. 
What should you do？（）