2 x DIR-330's - Help with SIte-to-Site IPSEC VPN

Posted on 2009-07-05
Last Modified: 2013-12-25
Have two sites : (site.a-server & 6 workstations with dir-330)(site.b-2 workstations with dir-330)I am setting up a site to site VPN connection *hopefully with IPEC enabled and functionality with no quams.  Any advice for an IPSEC configuration with security options and reliability.   Also - should I remove the DHCP role off the Small business server2k3? - Let me know if you need more info.
Question by:btsconsultant
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 4
  • 2
LVL 10

Accepted Solution

PlusIT earned 250 total points
ID: 24784749

i would not disable DHCP on the server side site, disable it on the DIR.  You will need to use the DHCP on the other side if you don't have a server there.

Make sure both networks are in different ip ranges.
Make sure firmware's are up to date on both DIRs

Then configure the vpn as follows:
Site to Site vpn
enable IPsec
Put local and remote lan ranges in
Use Pre-shared key and makes it very long and hard to crack!
You can add Xauth also and add a username and password for added sec (test with preshared key only first if you want to do this!)
Give local and remote ID (chosee freely)
Use main mode
Enable nat-t if their are routers in front of the firewall (ie if there's natting between)

Rest can be left alone, do the same for the second but switch lan ranges and local/remote id's :)


Author Comment

ID: 24815631

Follow up question;
info: site a:
IP Address :  
Subnet Mask :  
DHCP Server :   Disabled  
VPN Settings on site A (server site):
IPSEC enabled
Local net/mask : 192.168.0/24
Site to site   : ISP IP
Remote local LAN net/mask :
Preshared key  : testingkey123456
NAT disabled
Keep alive
cipher 1-4 3des and all hashes MD5
info: site b:
IP Address :  
Subnet Mask :  
DHCP Server :   Enabled  
VPN settings on site b (2 workstations):
IPSEC Enabled
Local net/mask : 192.168.0/24
Site to site   : ISP IP
Remote local LAN net/mask :
Preshared key  : testingkey123456
NAT disabled
Keep alive
cipher 1-4 3des and all hashes MD5
I have input all the local net/mask, remote IP.  
But I am somewhat confused as to what i should put
for the Remote local Lan Net/mask.  Is this the
Address of the router at site a?  Or is this the IP
address of the ISP?  -  I put it in basic mode like
you said with the preshared key. Am I missing
Thanks again!

Author Comment

ID: 24816473
I have established a connection between the two sites successfully with the above settings - ((minus putting NAT enabled on site B (workstation side))  - However, I am not getting local access.  Any ideas?
Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!


Author Closing Comment

ID: 31599921
Great help!  I really appreciate it.  Took no time at all!  By the time I was back at my office, the site-to-site was connected!  Just need a  little help with the local part now.
LVL 10

Expert Comment

ID: 24821776
firewalling ?  Have you allowed the two subnets ?

Author Comment

ID: 24823513
I have changed the two subnets but you are correct.  I have to wait til this afternoon to do the work, but I will get back to you.  Thanks again.

Featured Post

Is Your DevOps Pipeline Leaking?

Is your CI/CD pipeline a hodge-podge of randomly connected tools? You’ve likely got a tool to fix one problem & then a different tool to fix another, resulting in a cluster of tools with overlapping functionality. Learn how to optimize your pipeline with Gartner's recommendations

Question has a verified solution.

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

Suggested Solutions

Meet the world's only “Transparent Cloud™” from Superb Internet Corporation. Now, you can experience firsthand a cloud platform that consistently outperforms Amazon Web Services (AWS), IBM’s Softlayer, and Microsoft’s Azure when it comes to CPU and …
Most of the applications these days are on Cloud. Cloud is ubiquitous with many service providers in the market. Since it has many benefits such as cost reduction, software updates, remote access, disaster recovery and much more.
Viewers will learn how to connect to a wireless network using the network security key. They will also learn how to access the IP address and DNS server for connections that must be done manually. After setting up a router, find the network security…
In this tutorial you'll learn about bandwidth monitoring with flows and packet sniffing with our network monitoring solution PRTG Network Monitor ( If you're interested in additional methods for monitoring bandwidt…

752 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