Win2k Two users at the same time

Posted on 2002-03-25
Last Modified: 2010-04-11
Hi all
I have problems with windows 2000 server
how can i stop two user from login at the same time

i have RRAS installed and all the authantications comes from it
but sometime i see two users logged in at the same time and i dont know how to stop them
i need help !

Question by:moty66
  • 4
  • 3
  • 2
  • +2
LVL 41

Expert Comment

ID: 6895337

Expert Comment

ID: 6896321
If it's dial-in, why not just have 1 modem?  Or am I missing something?

Expert Comment

ID: 6897479
From steven's link, here they describe "a better way" to limit login sessions (

Author Comment

ID: 6898229
I was talking about the dialup users .. :( is it the same with them ? the modems are on the router .. and the users are on the3 ctiv directory ,, the ip from dhcp and the authantication frm RAS .. but what i read on that link does not work :(

any idea how to stop two dial up users from login at the same time ?

LVL 41

Expert Comment

ID: 6898260
Netscaler Common Configuration How To guides

If you use NetScaler you will want to see these guides. The NetScaler How To Guides show administrators how to get NetScaler up and configured by providing instructions for common scenarios and some not so common ones.


Expert Comment

ID: 6899593
Ok, moty, we still do not know some information. If you could clarify it would help us to narrow down your possibilities:

1) What is the reasoning behind limiting the connections? Is someone hogging up connectivity of others or do you just want X number of people to be able to log in at a time?

2) Are you trying to stop 1 user from logging in twice, or 2 users logging in at the same time? (It would seem that you want 1 user dialed in at a time.)

3) How many modems are available in the modem pool?

4) How many overall users are allowed to dial in and for what purpose? (You can be vague with the purpose [ie, access to a database, internal web server, etc].)

5) Is this actually Dialup (ie, the user dials a number) or VPN (ie, the users "dials" an IP)?

This information should help us to direct you to plausible solutions.

Author Comment

ID: 6903671
ok i will tell u all , it seems u didnt understand what i wrote .. and it seems also i didnt write the question good

i have 30 async modems on my router
and i have 32 ip pool for them on my dhcp

when i telnet to my router to see  how is online
i write telnet 79 to see which users are logged in

now sometime i see two users have the same username
and this is not good.
i mean i dont want two users to login with the same ID (user name) and at the same time

how can i do this .. from windows 2000 or the router ?

i have the authentication on RAS

so help me :)
i hope  u understand now
the question is
how can i stop two user from login at the same time with the same username on windows 2000 :)

sorry for the english again

Expert Comment

ID: 6905909
Although this may be somewhat of a kludge, you can set the dial-up user accounts to callback the user before initiating the connection; or maybe use this restriction only on the callers that appear to be abusing the dial-up privileges.

In the User's Properties, Dial-in tab, Callback section, set the option to Always callback to and put in the phone number from which they make the remote connection.

In so doing, if user Joe calls in from 111-222-3333, the server calls back at 111-222-3333 to initiate the connection. If Joe tries to use a second call, from 333-222-1111 for instance, it will try to callback at 111-222-3333 and, therefore, the callback would fail and the user cannot login.

Other than some sort of workaround, I do not see anything in the RAS or User options to restrict them from loggin in only once.

You may want to see if your RADIUS server has options for restricting access based off of currently logged-in users.

Author Comment

ID: 6906143
i dont want to pay phone bills
and how to make the RADIAS stop accepting the two users

Accepted Solution

CyberStretch earned 50 total points
ID: 6907341
I am not sure if your RADIUS implementation is compatible, however there is an example ( showing a User Profile that includes the attribute "Simultaneous-Use=1". See ( for more information.

"When a user with limited number of simultaneous logins authenticates himself, Radius first counts the number of the sessions that are already opened by this user. If this number is equal to the value of Simultaneous-Use attribute the authentication request is rejected."

Expert Comment

ID: 9155764
This old question needs to be finalized -- accept an answer, split points, or get a refund.  For information on your options, please click here-> http:/help/closing.jsp#1 
Post your closing recommendations!  No comment means you don't care.

Featured Post

VMware Disaster Recovery and Data Protection

In this expert guide, you’ll learn about the components of a Modern Data Center. You will use cases for the value-added capabilities of Veeam®, including combining backup and replication for VMware disaster recovery and using replication for data center migration.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Port forwarding 14 113
cradle point vpn to sonicwall 5 45
Set up wireless network on Cisco ASA 5505 with DHCP 13 49
Viber-Only Restriction 6 23
If you're not part of the solution, you're part of the problem.   Tips on how to secure IoT devices, even the dumbest ones, so they can't be used as part of a DDoS botnet.  Use PRTG Network Monitor as one of the building blocks, to detect unusual…
For many of us, the  holiday season kindles the natural urge to give back to our friends, family members and communities. While it's easy for friends to notice the impact of such deeds, understanding the contributions of businesses and enterprises i…
After creating this article (, I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
This video gives you a great overview about bandwidth monitoring with SNMP and WMI with our network monitoring solution PRTG Network Monitor ( If you're looking for how to monitor bandwidth using netflow or packet s…

919 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

14 Experts available now in Live!

Get 1:1 Help Now