PPTP Server Configuration

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Revision as of 22:10, 18 February 2006

This is a configuration guide to get a "PPTP Server" working on WRT54G/GS DD-WRT V2.3

A Little Brief : A PPTP Server let's us get connected securely from our home to the Office LAN, so you can use the services provided in your office at the confort of your home.

I'm using version DD-WRT 2.3 "VOIP" on WRT54GS router

  1. The first step in the configuration is to have flashed our WRT54G/GS with the "RIGHT" fimware, once you be sure about firmware , you have to go to the WEB Administration Page (http://ip_of_router), log on and go to the "ADMINISTRATION" tab, once you get there, do a click on "SERVICES" tab.
  2. Go down and you will see "PPTP Server" by default is "Disabled" you must "ENABLE" and go to the botton of the page and click on "Save Settings"
  3. The next you will see, the message "Settings Are Succesfull" click on "Continue".
  4. Again in the tab "Services", go down , and you will see a few options under PPTP Server...

you have to complete the options in order to get PPTP server working,

Complete the options as follows:

PPTP Server = Enabled (this runs the service)

Server IP = here you have to write your WAN IP Address. Usually provided by your ISP. Example: Server IP = 200.49.96.X

Client IP(s)= here you have to write the "clients" ip addresses range, this is used to give the clients, who are trying to connect, a valid ip address on the LAN segment of the network

 Example: 192.168.1.100-120 (21 clients allowed)

CHAP-Secrets = Here you have to write the "Usernames" and "Passwords" that you want to assign to clients. Pay close attention to the use of spaces and asterisks between usernames and passwords, authentication will not work without them.

General Syntax:

Username * Password *
username_to_use,blank space,asterisk,blank space,password_to_use,blank space,asterisk 

Example:

fernando * bissio *
marcelo * semino *
eduardo * crea *

Do NOT forget of spaces between asterisk and usernames/passwords, if not, it will not work.

Once you have completed the data input go down an click on "Save Settings" to save changes, now on the page "Settings Are Succesfull" click on "Continue" and again on "SERVICES" tab, where you doublecheck the values of your PPTP server.

5) Finally, go down, and click on "REBOOT ROUTER", this step is very important, no mather what you have configured, if you dont reboot router, settings will not work.

Now you only have to get a Windows BOX in the internet, create a new VPN connection and try to connect to the linksys as the "PPTP Server", be carefully , test must be done FROM the internet to hit the WAN port of the router, if you try to connect from the inside of your LAN, it will not work.

If you have any questions do not hesitate in contact me m_semino@hotmail.com

Important Advice: I have NOT any relation with DD-WRT, I love their work, but in this moment i'm an user, just like you...


If using the VPN connection software built into Windows XP, you might find that your internet connection will die once the vpn connection is established. This is a result of the default settings for Windows XP VPN connections. To fix this, do the following:

 Click Start
 Go to the Control Panel
 Go to Network Connections
 Right click your VPN connection and select properties
 Go to the networking tab and double-click TCP/IP
 Click the Advanced button on the window that opens
 Uncheck the box titled "Use the default gateway of the remote network

Hit ok on all related windows so that your changes are saved.