How to setup VPN on a D-link Router.

Ok to Setup you VPN follow the instructions below. You can configure DI-804HV, DI-808HV, and DI-824VUP+ by web management interface. Type 192.168.0.1 (The LAN IP is 192.168.0.1 by default) in the browser, and then input user name: admin (there is no password by default) to pass authentication of web management interface. Then finish the configurations as showed below on Gateway A and Gateway B. Configurations of Gateway A 􀂾 Model: DI-804HV (DI-808HV, or DI-824VUP+) 􀂾 Firmware version: v1.40 (You can download the latest firmware on D-Link’s website.) 􀂾 WAN IP Address: 14.15.16.17 (Static IP) 􀂾 LAN IP Address: 10.5.6.1 (Subnet Mask: 255.255.255.0) 􀂾 VPN Configurations: 􀂄 Enable VPN function on Gateway A. 􀂄 Tunnel Name: toGatewayB 􀂄 VPN Method: IKE (Main mode) 􀂄 Local Subnet: 10.5.6.0 􀂄 Local Netmask: 255.255.255.0 􀂄 Remote Subnet: 172.23.9.0 􀂄 Remote Netmask: 255.255.255.0 􀂄 Remote Gateway: 22.23.24.25 􀂄 Pre-share Key: hr5xb8416aa9r6 􀂄 IKE Proposal (Please remember to add the correct proposal ID into the list of IKE Proposal Index when you finish inputting the following information.) 􀀹 Proposal Name: toGatewayB 􀀹 DH Group: Group 2 􀀹 Encryption Algorithm: 3DES 􀀹 Authentication Algorithm: SHA1 􀀹 Life Time: 28800 􀀹 Life Time Unit: Second 􀂄 IPSec Proposal (Please remember to add the correct proposal ID into the list of IKE Proposal Index when you finish inputting the following information.) 􀀹 Proposal Name: toGatewayB 􀀹 DH Group: Group 2 􀀹 Encapsulation Protocol: ESP 􀀹 Encryption Algorithm: 3DES 􀀹 Authentication Algorithm: SHA1 􀀹 Life Time: 3600 􀀹 Life Time Unit: Second 4. Verify the VPN connection Before you start to establish VPN connection between Gateway A and Gateway B, please make sure the Internet connection between Gateway A and Gateway B is workable. You can use “Ping Test” tool on Gateway A (or Gateway B), and input the IP address of Gateway B (or Gateway A) to see if there is any response from its peer device. Connect a PC (called PC_A) to the LAN port of Gateway A, and connect another PC (called PC_B) to the LAN port of Gateway B. Start to “Ping” PC_B on PC_A, then Gateway A will start to establish IPSec connection with Gateway B. If you can get “Ping” responses from PC_B on PC_A, then it means the tunnel has been established successfully. You can also check the “VPN Status” page with web management interface to verify the status of VPN connections. Figure 1: VPN status of Gateway A after IPSec connection has been established. Figure 2: VPN status of Gateway B after IPSec connection has been established.
Hope this helps
Here it is in PDF.http://www.vpnc.org/InteropProfiles/D-Link-DI.pdf

- Make sure you have an updated firmware on your router and after wards kindly visit this site for further instructions:
http://support.dlink.com/faq/view.asp?prod_id=1384&question=DI-804HV%20/%20DI-804V%20/%20DI-808HV

Step 1: Log into the web based configuration of the router by typing in the IP address of the router (default: 192.168.0.1) in your web browser. By default the username is admin and there is no password. Step 2: Click the VPN button on the left column, select the checkbox to Enable the VPN, and then in the box next to Max. number of tunnels , enter the maximum numbers of VPN tunnels that you would like to have connected. Step 3: In the space provided, enter the Tunnel Name for ID number 1, select IKE, and then click More. Step 4: In the Local Subnet and Local Netmask fields enter the network identifier for the local DI-804HV´s LAN and the corresponding subnet mask. Step 5: In the Remote Subnet and Remote Netmask fields enter the network identifier for the remote DI-804HV´s LAN and the corresponding subnet mask. Step 6: In the Remote Gateway field enter the WAN IP address of the remote DI-804HV and in the Preshared Key field, enter a key which must be exactly the same as the Preshared Key that is configured on the remote DI-804HV. Step 7: Click Apply and then click on Select IKE Proposal... Step 8: Enter a name for proposal ID number 1 and select Group 1, 2, or 5 from the DH Group dropdown menu. Step 9: Select DES or 3DES as the Encryption Algorithm and either SHA-1 or MD5 as the Authentication Algorithm. Step 10: Enter a Lifetime value and then either select Sec. or KByte as the unit for the lifetime value. Step 11: Select 1 out of the Proposal ID dropdown menu and click Add To, which will add the proposal that was just configured to the IKE Proposal Index. Click Apply and then click Back. Step 12: Click on Select IPSec Proposal... Step 13: Enter a name for proposal ID number 1 and select Group 1, 2, 5, or None from the DH Group dropdown menu. Step 14: Select ESP or AH as the Encapsulation Protocol. Step 15: Select DES or 3DES as the Encryption Algorithm and either SHA-1, MD5, or None as the Authentication Algorithm. Step 16: Enter a Lifetime value and then either select Sec. or KB as the unit for the lifetime value. Step 17: Select 1 out of the Proposal ID dropdown menu and click Add To, which will add the proposal that was just configured to the IPSec Proposal Index. Click Apply and then click Restart. Step 18: Follow these instructions to configure your Other DI-804HV using the exact same settings for the IKE Proposal and the IPSec Proposal. Also make sure that Step 4 is configured to reflect the LAN settings for what is now the Local DI-804HV and that Steps 5 & 6 are configured to reflect the Subnet and WAN IP of what is now the Remote DI-804HV Step 19: To establish the connection, open a command prompt and ping an IP address of a computer on the remote LAN. Once you receive replies the tunnel has been established.

Step 1: Log into the web based configuration of the router by typing in the IP address of the router (default: 192.168.0.1) in your web browser. By default the username is admin and there is no password. Step 2: Click the VPN button on the left column, select the checkbox to Enable the VPN, and then in the box next to Max. number of tunnels, enter the maximum numbers of VPN tunnels that you would like to have connected. Step 3: In the space provided, enter the Tunnel Name for ID number 1, select IKE, and then click More. Step 4: In the Local Subnet and Local Netmask fields enter the network identifier for DI-804HV´s LAN and the corresponding subnet mask. Step 5: In the Remote Subnet and Remote Netmask fields enter the network identifier for the DI-804V´s LAN and the corresponding subnet mask. Step 6: In the Remote Gateway field enter the WAN IP address of the remote DI-804V and in the Preshared Key field, enter a key which must be exactly the same as the Preshared Key that is configured on the DI-804V. Step 7: Click Apply and then click on Select IKE Proposal... Step 8: Enter a name for proposal ID number 1 and select Group 2 from the DH Group drop-down menu. Step 9: Select 3DES as the Encryption Algorithm and SHA-1 as the Authentication Algorithm. Step 10: Enter a Lifetime value of 28800 and then select Sec. as the unit for the lifetime value. Step 11: Select 1 out of the Proposal ID drop-down menu and click Add To, which will add the proposal that was just configured to the IKE Proposal Index. Click Apply and then click Back. Step 12: Click on Select IPSec Proposal... Step 13: Enter a name for proposal ID number 1 and select None from the DH Group drop-down menu. Step 14: Select ESP as the Encapsulation Protocol. Step 15: Select 3DES as the Encryption Algorithm and MD5 as the Authentication Algorithm. Step 16: Enter a Lifetime value of 3600 and then select Sec. as the unit for the lifetime value. Step 17: Select 1 out of the Proposal ID dropdown menu and click Add To, which will add the proposal that was just configured to the IPSec Proposal Index. Click Apply and then click Restart. Configuring the DI-804V: Step 1: Access the router?s web configuration by entering the router?s IP address in your web browser. The default IP address is 192.168.0.1. Login using your password. The default username is admin and the password is blank. Help Accessing Web Management Step 2: Click on Basic Setup and then select Device IP Settings on the left. Step 3: Change the LAN IP address so that it is on a different subnet than the LAN of the DI-804HV (ie 192.168.1.1). Step 4: Click Next until you reach the Save & Restart screen. Click Save & Restart and then click Basic Setup once the unit has rebooted. Step 3: Click on VPN Settings. Step 4: Name your VPN connection and click ADD. Step 5: In Remote IP Network and Remote IP Netmask fields enter the network identifier and corresponding subnet mask of the DI-804HV´s LAN. Step 6: In the Remote Gateway IP field enter the WAN IP address of the DI-804HV and make sure that the Network Interface is set to WAN Ethernet. Step 7: Verify that Secure Association is set to IKE and that Perfect Forward Secure is Disabled. Step 8: Verify the Encryption Protocol is set to 3DES and enter in your Preshared Key. The Preshared Key needs to be identical to the one configured on the DI-804HV Step 9: Leave the Key Life and IKE Life Time values at their default levels and click SAVE. Step 10: Click Next and then click on Save & Restart Establishing a connection: Step 1: Open a command prompt (Start > Run and type CMD) and from a computer on the internal LAN of the DI-804HV, ping the IP address of a computer that is on the internal LAN of the DI-804V, or vice versa. Step 2: Once you begin to receive replies, the VPN connection has been established. Step 3: To view the Status of the VPN on the DI-804V, click on Device Status. Step 4: From the Device Status screen click on VPN Status. Step 5: When the VPN has been established, the Status will be Active.

Step 1 Power the unit off by unplugging its power adapter. Step 2 Insert a paper clip in to the reset pinhole. Press and hold the reset button with light pressure. Step 3 Power the device back on by plugging it in. Continue to hold the reset button. Step 4 Watch the lights on the front of the router. The M1 & M2 should come on solid. When the M1 & M2 begin to blink slowly, release the reset button. The unit will reboot itself and should be at factory defaults. If the M1 light is not blinking about once per second, unplug the power on the router and plug it back in. If the M1 & M2 continue to blink rapidly, you held the reset button for too long. Power the device off and repeat the reset procedure. The default IP address is 192.168.0.1. The default username for our routers is admin. The password is blank. If your router asks only for a password, use admin (lower-case).