Solved

Problem with VPN connections throught a ISA 2006 server

Posted on 2008-10-16
7
259 Views
Last Modified: 2012-06-21
Hi Experts,

My organization has a ISA Server 2006 as a firewall, working with two interfaces, internal and external. We have internal computers establishing VPN connection with other external VPN servers, but when the other VPN end is a Zyxel router/firewall, the VPN can not be established, showing error 619 on the origin (the Windows XP computer trying to establish a PPTP VPN). If we stop the ISA Server and configure our router to work without the ISA Server, this VPN connection is established without problem. We allways use NAT.

Any idea about what's happening with ISA Server?

Thanks in advance.
0
Comment
Question by:david-marti
  • 3
7 Comments
 
LVL 63

Expert Comment

by:SysExpert
ID: 22734503
I would check all the filters and rules to see what traffic you are blocking.


I hope this helps !
0
 
LVL 63

Expert Comment

by:SysExpert
ID: 22734504
ALso check the relevant logs

0
 

Author Comment

by:david-marti
ID: 22734535
Thanks for your answer.

No, nothing blocks this kind traffic. I can successfully establish VPN with other VPN servers using PPTP ... the only problem is with this Zyxel.
0
 
LVL 63

Accepted Solution

by:
SysExpert earned 250 total points
ID: 22736529
Upgrade the firmware.

0
 
LVL 77

Assisted Solution

by:Rob Williams
Rob Williams earned 250 total points
ID: 22737764
One thought: make sure NAT-T (NAT-traversal) is enabled on the Zyxel, in its VPN configuration.
0

Featured Post

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.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
Connection timeouts with mobile vpn users 5 49
Cisco ASA5508-X vs Barracuda X200 2 63
HTTPS/SSL based VPN will full functionality? 2 58
cannot connect to openvpn server 9 74
For a while, I have wanted to connect my HTC Incredible to my corporate network to take advantage of the phone's powerful capabilities. I searched online and came up with varied answers from "it won't work" to super complicated statements that I did…
How to set-up an On Demand, IPSec, Site to SIte, VPN from a Draytek Vigor Router to a Cyberoam UTM Appliance. A concise guide to the settings required on both devices
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), 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…
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), 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…

773 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