Solved

VPN Client!!!

Posted on 2003-10-21
3
201 Views
Last Modified: 2013-11-16
Hi there,

I'm using a VPN Client to connect into my school's server. I can get connected without any problem. However when i check the statistics for the incoming packets decrypted it says 0. I believe something is blocking the packets. I have a pix 501 at my house. Do you think this could be the reason? Do you have any suggestions?

Thanks for your help.
0
Comment
Question by:mdiez
  • 2
3 Comments
 
LVL 1

Accepted Solution

by:
birksy earned 125 total points
ID: 9595053
Hi,

Given that you've a 501 at home I'm assuming that as you traverse your firewalls interfaces you're going through a private/public address boundary and hence the VPN server at the other end has to support client NAT.

Cisco typically use port 10000/UDP to create the network transport when your client is on a private address, but without knowing what sort of VPN server you're connecting to (e.g. Nortel, Symantec, Cisco) or for that matter whether you're using PPtP or IPSEC (or even an SSL VPN) it's immaterial. Let us know what sort of device you're connecting to and we'll go from there.

In the meantime here's a good place to start looking in terms of passing IPSEC VPN traffic through your firewall:

http://www.cisco.com/en/US/tech/tk583/tk372/technologies_configuration_example09186a008009486e.shtml

R.
0
 

Author Comment

by:mdiez
ID: 9595630
Hi there,

Thanks for youe response. My school is running a VPN Cisco Server. And they are using IPSEC. Does this help, or you need more information.

Thanks for your help
0
 
LVL 1

Expert Comment

by:birksy
ID: 9603984
Since you're connecting to another Cisco box things become slightly more simple.

You need to consider opening the following on your Pix:

ESP (50/IP)
ISAKMP (500/UDP)
10000/UDP

You'll also need to configure your Cisco client to do NAT traversal using a UDP transport. The link that I posted above explains how to do the firewall side of this in some detail.

Let me know how you get on, any if you have further problems.

R.
0

Featured Post

What Security Threats Are You Missing?

Enhance your security with threat intelligence from the web. Get trending threat insights on hackers, exploits, and suspicious IP addresses delivered to your inbox with our free Cyber Daily.

Join & Write a Comment

Suggested Solutions

If you are like regular user of computer nowadays, a good bet that your home computer is on right now, all exposed to world of Internet to be exploited by somebody you do not know and you never will. Internet security issues has been getting worse d…
Do you have a windows based Checkpoint SmartCenter for centralized Checkpoint management?  Have you ever backed up the firewall policy residing on the SmartCenter?  If you have then you know the hassles of connecting to the server, doing an upgrade_…
It is a freely distributed piece of software for such tasks as photo retouching, image composition and image authoring. It works on many operating systems, in many languages.
Access reports are powerful and flexible. Learn how to create a query and then a grouped report using the wizard. Modify the report design after the wizard is done to make it look better. There will be another video to explain how to put the final p…

746 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

12 Experts available now in Live!

Get 1:1 Help Now