Solved

How do I configure ISA Server to allow client PC to establish VPN to outside Server?

Posted on 2004-10-07
7
196 Views
Last Modified: 2012-05-05
I am having a problem allowing a client inside of my network to connect to a remote Server running VPN services. The problem seems to be that the request goes out from this client but when trying to get a reply from the VPN Server it can't get thru my ISA Server. I do have this server setup as a Proxy. I opened ports 1701 UDP, 1723 TCP for L2TP Traffic. I also opened ports 4500 udp, and 500 udp for IPSEC traffic. I also enabled "pptp through ISA firewall".
Any help would be appreciated.

0
Comment
Question by:compunet99
  • 3
  • 3
7 Comments
 
LVL 9

Expert Comment

by:Pentrix2
ID: 12257549
What ISA server are you using, and what type of VPN Server/vendor/technology are you using as well?
0
 

Author Comment

by:compunet99
ID: 12263458
The ISA Server is Windows 2000 ISA Server. The VPN Server is not known but we are using the Windows VPN Client. Hope that helps.
0
 
LVL 2

Expert Comment

by:kpiller
ID: 12263465
You can try this.

http://support.microsoft.com/default.aspx?scid=kb%3Ben-us%3B818043

It is a fix to allow better L2TP connections from a NAT. That may very well be the connection type as it has issues coming from a NAT.
0
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.

 

Author Comment

by:compunet99
ID: 12263572
Whenever this person attempts a connection using a wireless isp connection on the laptop, it works fine, it's just when they try to connect from inside our network that they have the problem.
0
 
LVL 2

Expert Comment

by:kpiller
ID: 12263676
That would be the case. L2TP does not like to connect from inside a network. That is why they put the above update out.
0
 

Author Comment

by:compunet99
ID: 12293428
Do I have to upgrade to Service Pack 2 to get this particular fix? The reason I ask is that this office runs a lot of applications that are not standard Microsoft products. I'm afraid that I will have problems with incompatability with SP2.

Thanks
0
 
LVL 2

Accepted Solution

by:
kpiller earned 250 total points
ID: 12299305
Not that I know of and I have not used the fix. I currently run PPTP client connection from other networks and it works fine but I am going to want them to use L2TP and anticipate needing this. If they are using L2TP it may help.
0

Featured Post

Flexible connectivity for any environment

The KE6900 series can extend and deploy computers with high definition displays across multiple stations in a variety of applications that suit any environment. Expand computer use to stations across multiple rooms with dynamic access.

Question has a verified solution.

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

Suggested Solutions

Are you one of those front-line IT Service Desk staff fielding calls, replying to emails, all-the-while working to resolve end-user technological nightmares? I am! That's why I have put together this brief overview of tools and techniques I use in o…
Resolve DNS query failed errors for Exchange
The Email Laundry PDF encryption service allows companies to send confidential encrypted  emails to anybody. The PDF document can also contain attachments that are embedded in the encrypted PDF. The password is randomly generated by The Email Laundr…

820 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