Posted on 2010-09-21
Last Modified: 2012-05-10
Hello Guys,

I'm looking for a way to persistantly connects two offices together.

Site A

ADSL connection
1 Fixed IP
I have control over this network
Router Vigor 2820

Site B

Broadband connection provided by the office/building (trying to find out the upload and download speed)
I don’t have control over this network
Router Vigor 2820

My plan is:

Can I setup a VPN LAN-to-LAN PPTP from Site B to dial Site A?
On site B the router will be connected to the internet via WAN2 port?
If so... Do I require any specific port(s) open on their firewall?

Please advise.


Question by:Rod_2010

Expert Comment

ID: 33726379
What I would recommend is a site to site VPN tunnel. This will allow traffic on both internal networks, but nothing from the outside. So long as your two endpoints can connect to each other, you should be good to go. Note, you might have to alter your static routing table if the IPs on Net B are on a different subnet.

Good Luck.
LVL 11

Accepted Solution

diprajbasu earned 500 total points
ID: 33732918
the better way is site to site IPSEC VPN.
PPTP vpn will work but it may got disconnect can go for site to site ip sec based have to create to diffrent network for two separe office and your connectivity will be on all time... if the isp is alive.
you need at-least one static ip for the above solution ...if you have have static ip on both the sites.. then you can go for IPSEC VPN active-active mode or if you have only one static ip then you can go for IPSEC VPN active-passive mode then the dynamic ip site will dial...the other site.
then the dynamice ip site..will be in active mode...

please revert back

Expert Comment

ID: 33759085
How many machines on each end?  Using Hamachi from Logmein is a very simple and convenient way of doing this.

Author Closing Comment

ID: 33905504
sorry for delay... but everything is working fine. IPsec is done!

Featured Post

Windows Server 2016: All you need to know

Learn about Hyper-V features that increase functionality and usability of Microsoft Windows Server 2016. Also, throughout this eBook, you’ll find some basic PowerShell examples that will help you leverage the scripts in your environments!

Question has a verified solution.

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

Suggested Solutions

If you use NetMotion Mobility on your PC and plan to upgrade to Windows 10, it may not work unless you take these steps.
Let’s list some of the technologies that enable smooth teleworking. 
After creating this article (, 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…
Windows 10 is mostly good. However the one thing that annoys me is how many clicks you have to do to dial a VPN connection. You have to go to settings from the start menu, (2 clicks), Network and Internet (1 click), Click VPN (another click) then fi…

777 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