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Permeant Dialup PPP Connection

Posted on 1997-01-19
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Last Modified: 2013-12-23
I am tying to get a reliable automatic dial to an ISP working under NT4.0 SP1.  I still have not been able to achieve this.
This is where I'm at :

The objective is to have Windows NT dial an ISP when booted, with no user interaction and establish a PPP link.  If the link fails for any reason it must re-dial and be re-established the link without user interaction.

I have set this up in the following manner;

* Created a RAS phone book entry to dial and login to the ISP.
* Set "Re-Dial on Link Failure" in the entry.
* Created a service to start the "DIALER"  using SRVANY.EXE.  I have tried Microsoft's RASDIAL & RASPHONE and a 3rd Party dialer called RAS32
all with the same result.

This all works fine if you are logged in and you start the service manually.  It will re-dial on failure and re-connect 100% of the time.

However if you then logout, the line will drop and NT will not re-dial the ISP.

If I set the service to start automatically and re-boot, the service will start and connect to the ISP, as long as a connection is established the first time ( it will not re-dial if there is a fault on the initial connect).  Also if a connection is made on the first attempt, if you login on the console then log off the connection will drop and no re-dial will take place.

I found the following in the SRVANY.WRI file that explains why the link drops when you logout;

" For WIN32 Console (i.e. character-mode) applications: when the currently logged-in user is logging-off, all Console applications receive a CTRL_LOGOFF_EVENT event from the Console. If your Console application has registered a Console event handler (via SetConsoleCtrlHandler), it must ignore CTRL_LOGOFF_EVENT in order  to survive the logoff. "

What I need is a RAS DIALER that will survive a CTRL_LOGOFF_EVENT  and will read the "Re-Dial on Link Failure"  setting in the phone book entry.
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Question by:alexv
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bruceward earned 100 total points
ID: 1559214
I also have gone trhough this struggle.  The easy way I found to solve the problem was to avoid it by configuring Auto Logon for my Server.  Then the server is always logged on.  I put the dialup connection in the Startup Group and have not had any problems since.

If you need info about Auto Logon search the Microsoft Knowledge Base at www.microsoft.com/kb, or send me email at bruce@befound.com
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