• Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 2046
  • Last Modified:

Allow VPN Passthru Pix 506

Hello Experts,

I have a Cisco Pix 506 that is installed in a hotel.  Guests traffic is passed through this firewall.  Many times I get people that try to connect to their work through a VPN.  How do I allow VPN connection out of my Cisco PIX 506?
0
Spank_IT
Asked:
Spank_IT
  • 6
  • 4
1 Solution
 
lrmooreCommented:
Several things to check.
  Are you using a single Public IP on the outside of the PIX for the global?
   Yes -- make sure you have 6.3(3) or higher
            Enable nat-transparency for IPSEC clients
               isakmp nat-traversal 20
            Enable fixup pptp for Microsoft clients
               fixup protocol pptp 1723
 
   No -- make sure you have enough addresses in the public IP pool to cover all inside clients

0
 
Spank_ITAuthor Commented:
Thank you for your response lrmoore.  I am using a single Static Public IP on the outside of the PIX.  I have 6.3(3).  I will add those two settings and let you know if it works.
0
 
Spank_ITAuthor Commented:
Do I have to make an acl that allows that too, or will the nat-transparency and fixup be enough to make it work?

Thank you
0
The Growing Need for Data Analysts

As the amount of data rapidly increases in our world, so does the need for qualified data analysts. WGU's MS in Data Analytics and maximize your leadership opportunities as a data engineer, business analyst, information research scientist, and more.

 
lrmooreCommented:
That should be enough, at least for Microsoft clients.

You might want to throw in a sysopt to be sure for IPSEC clients.

  sysopt ipsec pl-compatible
0
 
Spank_ITAuthor Commented:
I'm going to test this out then give you your points after it works.  Where do you get all your information's on VPN's.  I am fairly new to VPN's and would like to understand all the intricacies associated with them.  Where would be good place to start?

0
 
lrmooreCommented:
Here's a great resource with lot's of good links to other stuff..
http://labmice.techtarget.com/networking/ipsec.htm

0
 
Spank_ITAuthor Commented:
What if the Pix does not have 6.1(1)?
0
 
lrmooreCommented:
If you have anything below 6.3(3), then you have to setup the NAT pool to have enough addresses so that each client can have a 1-1 NAT.
Example, if your NAT pool is 12 addresses, then only the first 12 users will get 1-1 addresses and can use VPN. Lucky #13 gets internet access, but no VPN.
0
 
Spank_ITAuthor Commented:
I think with a 6.1(1) all you need to do is allow esp and ah protocols through the firewall and udp port 500 for isakmp with an access list.
0
 
Spank_ITAuthor Commented:
Do you know how to setup a client to site vpn with a cisco 2600 router?
0

Featured Post

SMB Security Just Got a Layer Stronger

WatchGuard acquires Percipient Networks to extend protection to the DNS layer, further increasing the value of Total Security Suite.  Learn more about what this means for you and how you can improve your security with WatchGuard today!

  • 6
  • 4
Tackle projects and never again get stuck behind a technical roadblock.
Join Now