我有几个 LAN 接口，并且可以通过 VPN 访问互联网（连接到提供商 VPN 服务器）。我想设置从局域网到互联网的 NAT。为此，我在 Windows Server 2008 R2 标准功能上安装了“路由和远程访问”，并创建了到 VPN 服务器的请求拨号接口。但我无法连接到此接口。在事件查看器中，我收到以下错误消息：
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，包含连接配置的信息消息：
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.
但如果我尝试通过在“网络和共享中心”中创建的连接连接到 ISP，则一切正常。在事件查看器中，我看到了下一条消息：
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.
据我所知，配置上有一些差异。参数是什么意思VPN策略，ipdns标志，启用 IPNBTEnabled和为 IKEv2 启用移动性？我可以在哪里更改此参数的值？或者我的问题不是这个？