[146] in winnt
Question: RAS PPTP access to MIT from MediaOne?
daemon@ATHENA.MIT.EDU (Nathanial Charles)
Fri May 15 10:10:53 1998
Date: Fri, 15 May 1998 10:06:10 -0400
To: ntpartners@MIT.EDU
From: Nathanial Charles <garlands@MIT.EDU>
Hello,
I am having a problem that I hope someone can help me with.
I am trying to access a Windows NT 4.0 Server remotely via the cable
internet service MediaOne (which I have at home. The machine is a dual
boot Windows 95,WinNT 4.0 Workstation). MediaOne blocks certain TCP and
UDP ports, so a direct connection via TCPIP will not work. (But this does
work at MIT, with the proper LMHOSTS entries, in lieu of a WINS server.
Haven't tried it with Tether, but that should work too.)
One solution is to use RAS with the Point to Point Tunneling Protocol. In
theory, I should be able to create a Virtual Private Network, becoming a
virtual node on the subnet that the WinNT server is on. Windows NT
workstation supports this natively, while Windows 95 requires the Dial-Up
Networking Upgrade 1.2 with PPTP support.
In practice, what happens is that I can connect to the Windows NT Server
using PPTP, but once I am connected, nothing happens. I can not browse
network neighborhood. I can't see any computers on the subnet that I am
supposedly connected to. I can not do a find computer either by name or IP
address. I am getting an IP address on the remote subnet via DHCP, but
while I am connected, the only IP addresses that I can ping are the remote
WinNT server address and my own remote subnet IP address. All other pings,
to known subnet IP addresses, or even to general internet sites return
failures. In fact, all internet access stops (i.e. Netscape fails to
connect) until I disconnect the PPTP connection. The protocols that I
usually include in the tunnel are Netbeui and TCPIP.
My question is: Has anyone else got this RAS with PPTP connection working?
Does anyone else connect remotely from MediaOne? I suspect that there is
some routing issue here, since the routing table changes when I make the
PPTP connection, but I don't know how to interpret the tables correctly.
Does anyone have any suggestions?
