我有几个局域网接口和通过VPN连接到互联网（连接到提供商VPN服务器）。 我想从局域网到互联网build立NAT。 为此，我在Windows Server 2008 R2标准function“路由和远程访问”上安装，并创build请求拨号接口到VPN服务器。 但是我不能连接到这个接口。 而在事件查看器中，我有下一个错误消息：
CoId={10CA7799-B54D-41F8-B8A8-7F92CF662137}: The user SYSTEM dialed a connection named Global world which has failed. The error code returned on failure is 720. 在此之前，具有连接configuration的信息消息：
CoId={10CA7799-B54D-41F8-B8A8-7F92CF662137}: The user SYSTEM has started dialing a VPN connection using a all-user connection profile named Global world. The connection settings are: Dial-in User = 00332 VpnStrategy = PPTP then L2TP DataEncryption = None PrerequisiteEntry = AutoLogon = No UseRasCredentials = Yes Authentication Type = PAP/CHAP/MS-CHAPv2 Ipv4DefaultGateway = Yes Ipv4AddressAssignment = By Server Ipv4DNSServerAssignment = By Server Ipv6DefaultGateway = Yes Ipv6AddressAssignment = By Server Ipv6DNSServerAssignment = By Server IpDnsFlags = IpNBTEnabled = No UseFlags = Private Connection ConnectOnWinlogon = No IPsec authentication for L2TP = Machine certificate.
但是，如果我尝试通过“networking和共享中心”中创build的连接来连接到ISP，那么一切正常。 而在事件查看器中，我有下一个消息：
CoId={0BC9B4DF-10DB-4239-9FB7-3F819B9DB575}: The user SPBANGEL-HOME\Administrator has started dialing a VPN connection using a per-user connection profile named VPN Connection. The connection settings are: Dial-in User = 00332 VpnStrategy = IKEv2 , SSTP , PPTP then L2TP DataEncryption = None PrerequisiteEntry = AutoLogon = No UseRasCredentials = Yes Authentication Type = PAP/CHAP/MS-CHAPv2 Ipv4DefaultGateway = Yes Ipv4AddressAssignment = By Server Ipv4DNSServerAssignment = By Server Ipv6DefaultGateway = Yes Ipv6AddressAssignment = By Server Ipv6DNSServerAssignment = By Server IpDnsFlags = Register primary domain suffix IpNBTEnabled = Yes UseFlags = Private Connection ConnectOnWinlogon = No IPsec authentication for L2TP = Machine certificate Mobility enabled for IKEv2 = Yes.
正如我所看到的，configuration有一些差异。 什么意思为IKEv2启用参数VpnStrategy ， IpDnsFlags ， IpNBTEnabled和Mobility ？ 在哪里我可以改变这个参数的值？ 或者我的问题不是吗？