Accessing LAN Application from outside

June 23, 2010 at 11:11:14
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Hello all,

I have one application (client-server) which uses ODBC and runs on LAN. With in LAN, I am just installing the client. Now, I want to install the client outside the LAN and connect to the server. And the outside users should be able to use the client application.

So, can you please suggest me the easiest solution and how can I do it.

Anticipating for you help.


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June 23, 2010 at 11:34:30
1. put in a vpn router with client software. Install the client software on the remote users pcs/laptops. They authenicate to the vpn router and then access the local network

2. do #1 and put in a terminal server that remote users connect to via RDP to then access the application [higher level of security

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June 23, 2010 at 13:01:47
Thanks Wanderer,

But the thing is I don't have VPN router. My setup is DHCP Router->ADSL Modem/Router->ISP.

How can I do this on such environment. Is there any solution without investing anything. While, I am searching, I found some clue that this can be done with port forwarding on the router. But couldn't understand, how can it be done.

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June 23, 2010 at 13:19:42
Port forwarding will work but only for one user at a time. If you want multiple users at the same time you have to use once of the options above.

You assign a static ip to the pc
You enable Remote Desktop
You setup user accounts to use Remote Desktop
You configure the router to forward port 3389 to the static ip of the pc.
Remote users access the pc via routerwanip:3389

You can get the routers wan ip by going to

Another method which does not require configuring port forwarding is using products like logmein or hamachi [google them for more info]

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June 23, 2010 at 13:46:37
Thanks Wanderer again.. !!!

You really made it easy for me to understand how port forwarding works. And yeah, it's for single user only.

Actually, I have 2 routers. First one is for DHCP with local ip and the second one is ADSL router (the one having wan ip). The gateway for my first router is my second router. So, I think I need do port forwarding on both the routers, right???

Moreover, the application which I want user to get the access is windows application which uses ODBC. That means, I need to enter mywanip:port on user pc's odbc connection string, am I correct???

Actually, user should be able to use the application as the local windows application as they need to logon to the application most of the time and print the report on their premises only and I also can't assign one dedicated PC for the remote login. So, remote login products will not help me on this.

Please suggest me further!!!

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June 23, 2010 at 16:01:13
It might be a good idea to setup an account at My router has a setting that updates that site should it's WAN IP ever change.

Insomniac at large

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