Solved

Sonicwall NSA 2600 Client VPN

Posted on 2014-02-20
9
2,177 Views
Last Modified: 2014-02-25
I had SSL VPN set up and working but cant get the a budget to purchase more SSL licences so I am trying to set up VPN access using the SW global VPN client.

I have got my users connecting and getting an DHCP address from my internal server not the sonicwall.

I have set split tunnelling and created a user group called SWVPN that has VPN access to firewalled subnet. However when I am trying to access the internet internal or external I get page cannot be displayed.

Some of the config I have is -
relay address 0.0.0.0
Split Tunnelling
Require authentication of VPN clients by XAUTH (pointing to my VPN group)
Enable Windows Networking (NetBIOS) Broadcast
everything else is unticked.
default gateway set to my sonicwalls internal IP

From the SW logs I am seeing this

UTC 02/20/2014 11:44:40.704 Notice Network Access Web access request dropped 192.168.1.34, 58759, X1 192.168.1.212, 80, X0 HTTP    
2 UTC 02/20/2014 11:44:12.096 Notice Network Access TCP handshake violation detected; TCP connection dropped 192.168.1.34, 58738, X1 dan james 173.194.67.103, 80, X1, wi-in-f103.1e100.net Handshake Timeout    
3 UTC 02/20/2014 11:44:05.432 Notice Network Access UDP packet dropped 192.168.1.34, 137, X1 192.168.17.255, 137, X0 NetBios UDP    
4 UTC 02/20/2014 11:43:08.336 Notice Network Access UDP packet dropped 192.168.1.34, 137, X1 192.168.17.255, 137, X0 NetBios UDP    
5 UTC 02/20/2014 11:43:05.640 Notice Network Access TCP handshake violation detected; TCP connection dropped 192.168.1.34, 58723, X1 dan james 157.56.122.48, 443, X1 Handshake Timeout    
6 UTC 02/20/2014 11:42:02.208 Notice Network Access Web access request dropped 192.168.1.34, 58737, X1 192.168.1.212, 80, X0 HTTP    
7 UTC 02/20/2014 11:41:58.432 Notice Network Access UDP packet dropped 192.168.1.34, 50572, X1 192.168.1.200, 53, X0 DNS (Name Service) UDP
0
Comment
Question by:CaptainGiblets
  • 5
  • 4
9 Comments
 
LVL 10

Expert Comment

by:convergint
Comment Utility
You need to change the default gateway on the WAN GroupVPN policy back to 0.0.0.0 as you don't need that when you are running a split tunnel configuration.

I'm assuming that you are able to get the clients to connect fine with the VPN client and that you are licensed for that as well?
0
 
LVL 6

Author Comment

by:CaptainGiblets
Comment Utility
they connect fine just cant do anything, I tried 0.0.0.0 on split and everything and it does the same.
0
 
LVL 10

Expert Comment

by:convergint
Comment Utility
Once they connect, are they able to ping the Sonicwall LAN gateway itself?  And I'm assuming that their local LAN subnets do not conflict with your corporate LAN?

If their local LAN is 192.168.1.x and your Sonicwall LAN is also 192.168.1.x then things will not work.
0
 
LVL 6

Author Comment

by:CaptainGiblets
Comment Utility
Well currently I have a DHCP server on my LAN which gives the address to all the clients etc.

How can I enable it on my sonicwall without it interfering with my clients and only providing addresses to my vpn clients on a different subnet?
0
Top 6 Sources for Identifying Threat Actor TTPs

Understanding your enemy is essential. These six sources will help you identify the most popular threat actor tactics, techniques, and procedures (TTPs).

 
LVL 10

Accepted Solution

by:
convergint earned 500 total points
Comment Utility
In the VPN > DHCP over VPN settings you can configure the DHCP to only use the internal DHCP for the Global VPN Client.

This is the KB article on how to do it but it does not mention the NSA 2600 but I'd assume it would work still.

https://www.sonicwall.com/us/en/support/2213.html?fuzeurl=https://www.fuzeqna.com/sonicwallkb/ext/kbdetail.aspx?kbid=8024&SearchType=advanced&referrer=&status=&rfield=&sortmethod=rel&rpp=25&usertype=Consumer&formaction=search&keyword=many+wan+ip&vsn=&subcats=&start=26&match=and&catid=&submitbutton=Go
0
 
LVL 6

Author Comment

by:CaptainGiblets
Comment Utility
Trying to do this and I am stuck at Acquiring IP

Created a VLAN on X0 with IP of 192.168.18.1, then went and set use DHCP for VPN with a scope of 192.168.18.100 to 18.110 with an interface of X0:V1

In VPN DHCP settings I set the relay 192.168.18.1 and also tried it as 0.0.0.0

The logs show -  02/24/2014 11:04:59.720 Info DHCP Relay DHCP DISCOVER received from remote device 0.0.0.0, 68, X1 255.255.255.255, 67 MAC=00:60:73:C0:D6:0C HostName: MR-K
EAD1  

When hovering over local VPN settings for user it says 0.0.0.0 0.0.0.0

However I have allowed access for users via AD in a group called SW_VPN which I am a part of and I have given the group access to the X0 subnet and the X0:V1 vlan.
0
 
LVL 10

Expert Comment

by:convergint
Comment Utility
I just tested this on our Sonicwall and you need to set the relay with 192.168.18.100, not 192.168.18.1.
0
 
LVL 6

Author Comment

by:CaptainGiblets
Comment Utility
I don't understand why it would be 18.100? as that is only the start of the DHCP scope. Its not actually a device or anything?
0
 
LVL 10

Expert Comment

by:convergint
Comment Utility
In the Sonicwall KB I posted above, it states that the relay address needs to be within the DHCP scope.  I don't understand the technical details of why, but all I know is that it worked perfectly fine with our NSA 2400 following those instructions and also setting up a X0:V1 like yours.
0

Featured Post

Maximize Your Threat Intelligence Reporting

Reporting is one of the most important and least talked about aspects of a world-class threat intelligence program. Here’s how to do it right.

Join & Write a Comment

I recently had the displeasure of buying a new firewall at one of the buildings I play Sys Admin at. I had to get a better firewall than the cheap one that I had there since I was reconnecting the main office to the satellite office via point-to-poi…
Optimal Xbox 360 connectivity requires "OPEN NAT". If you use Juniper Netscreen or SSG firewall products in a home setting, the following steps will allow you get rid of the dreaded warning screen below and achieve the best online gaming environment…
Illustrator's Shape Builder tool will let you combine shapes visually and interactively. This video shows the Mac version, but the tool works the same way in Windows. To follow along with this video, you can draw your own shapes or download the file…
In this tutorial you'll learn about bandwidth monitoring with flows and packet sniffing with our network monitoring solution PRTG Network Monitor (https://www.paessler.com/prtg). If you're interested in additional methods for monitoring bandwidt…

771 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