danwood
asked on
Does DUN support dial back
I want to set up a remote access session to a Shiva LanRover RAS. I usually use ShivaRemote dial-in client but I can't get this client to work with an ISDN card (with analogue modem emulator). For security reasons the sessions are set up to dial back at a fixed number.
1. Is it possible to use the shiva client (win95, lanrover release 5.7)
2. If I can't do that can DUN support dial back.
1. Is it possible to use the shiva client (win95, lanrover release 5.7)
2. If I can't do that can DUN support dial back.
you can do this with the initialisation string of the modem, ie dial the site, setting the modem to auto answer.
Initially it may help to set the "start with terminal mode" checkbox enabled, this will allow you to type or establish a connection.
I remember reading a more detailed description on the Microsoft Technet (which is free), the article was something like:
"Dial-Up Networking using call-back security"
hope this helps.
Initially it may help to set the "start with terminal mode" checkbox enabled, this will allow you to type or establish a connection.
I remember reading a more detailed description on the Microsoft Technet (which is free), the article was something like:
"Dial-Up Networking using call-back security"
hope this helps.
as he/she mentioned
SYMPTOMS
========
When you use Dial-Up Networking to dial into a Point-to-Point Protocol (PPP) or
Remote Access (RAS) server, callback security may not work properly and the
connection may fail.
CAUSE
=====
The Windows Dial-Up Networking client supports the callback security feature
only from a Microsoft Windows NT 3.x or 4.0 RAS server. Also, the default
properties of the modem initialization string in the Windows client disable the
modem's auto-answer feature.
RESOLUTION
==========
The Dial-Up Networking client supports only the CallbackCP control protocol for
processing server callback security services. Currently, Windows NT 3.x and
Windows NT 4.0 support this protocol.
PPP and RAS servers for other platforms and operating systems would have to use
the Microsoft CallbackCP protocol in order for the Dial-Up Networking client to
access their callback security services.
To allow the Windows client to answer the callback verification from a Windows NT
3.x or 4.0 RAS server, follow these steps:
1. In Control Panel, double-click Modems.
2. Click the modem you are using, and then click Properties.
3. On the Connection tab, click Advanced.
4. In the Extra Settings box, type the following line:
" AT S0=1 " (without the quotation marks)
This string allows the modem to answer the callback from the Windows NT
server.
5. Click OK or Close until you return to Control Panel.
MORE INFORMATION
================
Callback security can be used to audit the use of remote servers using either of
the following methods:
- The first method is for the remote user to dial into the server and enter a
phone number for callback. After the remote user enters the callback number,
the connection is dropped and Windows waits for the Windows NT server to call
back to establish the remote session.
- The second method is to have a server-side preset phone number. When the
remote user calls in, the Windows NT server checks the user list for a phone
number. At that point, the connection is dropped and the Windows NT server
calls the preset number. The preset number can be changed only at the server
side.
SYMPTOMS
========
When you use Dial-Up Networking to dial into a Point-to-Point Protocol (PPP) or
Remote Access (RAS) server, callback security may not work properly and the
connection may fail.
CAUSE
=====
The Windows Dial-Up Networking client supports the callback security feature
only from a Microsoft Windows NT 3.x or 4.0 RAS server. Also, the default
properties of the modem initialization string in the Windows client disable the
modem's auto-answer feature.
RESOLUTION
==========
The Dial-Up Networking client supports only the CallbackCP control protocol for
processing server callback security services. Currently, Windows NT 3.x and
Windows NT 4.0 support this protocol.
PPP and RAS servers for other platforms and operating systems would have to use
the Microsoft CallbackCP protocol in order for the Dial-Up Networking client to
access their callback security services.
To allow the Windows client to answer the callback verification from a Windows NT
3.x or 4.0 RAS server, follow these steps:
1. In Control Panel, double-click Modems.
2. Click the modem you are using, and then click Properties.
3. On the Connection tab, click Advanced.
4. In the Extra Settings box, type the following line:
" AT S0=1 " (without the quotation marks)
This string allows the modem to answer the callback from the Windows NT
server.
5. Click OK or Close until you return to Control Panel.
MORE INFORMATION
================
Callback security can be used to audit the use of remote servers using either of
the following methods:
- The first method is for the remote user to dial into the server and enter a
phone number for callback. After the remote user enters the callback number,
the connection is dropped and Windows waits for the Windows NT server to call
back to establish the remote session.
- The second method is to have a server-side preset phone number. When the
remote user calls in, the Windows NT server checks the user list for a phone
number. At that point, the connection is dropped and the Windows NT server
calls the preset number. The preset number can be changed only at the server
side.
I concur.
ASKER
Thanks for the comments.
Just to clarify, I am not dialing in to an NT server. Does my lanrover use the Microsoft CallbackCP protocol?
Just to clarify, I am not dialing in to an NT server. Does my lanrover use the Microsoft CallbackCP protocol?
ASKER CERTIFIED SOLUTION
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
what service pack are you running on the server? I found some problems with different versions of NT and different service packs relating to RAS on an ISDN.