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NT 4 RAS and PPTP

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by joemoran

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I am running an NT 4 Server with RAS as a Virtual Private Network server using PPTP. It is set up for 20 VPN ports. They are all coming in off of a NIC, not modems.

Often, I get complaints from users that performance is "slow". When I check their connections in Remote Access Manager, I invariably find their port speed listed at 9600, rather than 64000, which is the norm.

Most of the people are accessing the VPN through a network connection at a remote location, so it's not a LAN vs. modem access type of thing. Also, the access in is a full T1- so no bandwidth shortage there.

Finally, it seems to be fairly random-- no discernable pattern is obvious; at least not yet.

Anyone have any experience with this sort of a problem? Thanks.

3 replies

by shmaltz

I had the same problem.
The reason you see only 9600 microsoft states in one of its KB articles (Q263614) that this is by design and does not mean that the connection was done only on that speed.
About the speed its sounds like when there is a lotof users connected to the server and thats why you have speed problems make sure your page file settings are correct and that you have enough memory and processing power.
also for speed and security I updated my VPN server to WIN2K and it performs much better and it is suppose to be much more secure.
Maybe you should also consider a terminal server b/c of the speed problem, or try a hardware VPN sollution instead of a Software VPN like the one you are using now.

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