Article ID: 241812 - View products that this article applies to.
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When you install Microsoft Proxy 2.0 on your Microsoft Windows NT 4.0-based computer, the common recommendation is to disable Internet Protocol (IP) forwarding. This is usually recommended to prevent the computer from routing packets to the internal network. This article describes the behavior of remote access Dial-Up Networking (DUN) clients based on whether this setting is enabled or disabled.
When your Windows NT 4.0-based computer is running Remote Access Service (RAS) or Routing and Remote Access Service (RRAS) in addition to Microsoft Proxy 2.0, the IP forwarding setting controls the following behavior for remote access DUN clients:
IP Forwarding Is DisabledRemote access DUN clients are able to obtain access to the Proxy 2.0 RAS (or RRAS) Proxy 2.0 server only.
IP Forwarding Is EnabledRemote access DUN clients are able to obtain access to the Proxy 2.0 RAS (or RRAS) Proxy 2.0 server, and to resources on the local area network (beyond the proxy).
NOTE: Proxy 2.0 Autodial is not affected by the IP forwarding setting, because the DUN connections are outgoing.
To configure IP forwarding on your Windows NT 4.0-based computer: