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I try to configure a DD-WRT as a PPTP client. The VPN Server is Windows Server 2003.

This is my scenario:

My Network

The Windows 2003 Server has set to give to the VPN Client the 10.0.0.81 fixed IP and to add a network route to the remote home.

VPN User

At the remote home I have changed the PPTP Options at DD-WRT to make the connection.

PPTP Client

The VPN connection is successfully established. VPN Connection

...and Windows successfully add the route to the remote home 192.168.2.X.

Route Print

From the remote home I can successfully access any computer from the VPN server side.

Ping from 192.168.2.135 to 10.0.0.X

The problem is when I try to access the remote home from the Server side.

Ping from 10.0.0.X to 192.168.0.X

From Server side I only can access\ping DD-WRT ( by VPN Client IP - 10.0.0.81).

Ping VPN Client IP 10.0.0.81 from 10.0.0.X

What's wrong?

How I need to do to be a site-to-site VPN?

This is what happen when I try to tracert the remote home from local home.

Tracert 192.168.2.2

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closed as off-topic by Falcon Momot, Ward, cole, mdpc, Rex Dec 3 '13 at 15:17

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • "Questions must be relevant to professional system administration. Server Fault is dedicated to professional system and network administrators. End user and enthusiast questions are off-topic (contact your system administrator or hire a professional to help you out). Please see the Help Center for more information." – Falcon Momot, cole, mdpc, Rex
If this question can be reworded to fit the rules in the help center, please edit the question.

1  
Just a side note; the security of PPTP is a debatable topic. If your remote ends have static IPs set up IPSEC, or use OpenVPN, dymanic and more secure than PPTP. –  jwbensley Sep 10 '12 at 20:07

2 Answers 2

I'm adding this answer as it is now well over a year after this question was posted. Extensive security testing has been performed on Microsoft's PPTP implementation and it was determined that the protocol is relatively insecure.

The DD-WRT group strongly recommends using the OpenVPN capabilities of the system for stronger security and authentication.

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What services are you trying to access on the Home PPTP Client? It looks like to my you are trying to connect through windows explorer over samba or port 445. I think you need to open up your Windows Firewall on the home computer.

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No. I need to access everything (files, VoIP, computers, printers). I don´t use Samba. And, I can access everything at the Home Computer Network. The problem is just when I try access the remote home (behind DD-WRT client) from the local home. –  Tobias Tromm May 2 '11 at 11:25
    
I upload new image from tracert remote home from local home. –  Tobias Tromm May 2 '11 at 11:32
    
Can you try to turn off your Windows firewall on the home computer and try again? –  jdcarg May 10 '11 at 14:27
    
Sorry about the delay, i don´t receive the e-mail with answer update. Windows Firewall is already disabled. If i connect directly from one computer to VPN I can ping both sides. The problem is only with the router. –  Tobias Tromm May 17 '11 at 12:29

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