Hello Svetoslav,
ASA VPNs support two primary methods of establishing VPNs: IPSec and SSL WebVPN. Typically, the IPSec tunnels are used to establish static point-to-point VPNs (bridging two networks, for example) and the WebVPN is intended for client remote access.
To setup VPN on DD-WRT following are the steps.
- Connect to your router. For that you have to put in your browser the ipaddress.
Also you have to set your network connection to obtain IP address automatically if you connect to your router via Ethernet. - Configure your DD-WRT router to share your regular internet connection.
Go to “Setup” -> “Basic Setup” .
On “Connection type” select PPTP (or L2TP).
For “Use DHCP” select “Yes”.
In the “Gateway (PPTP Server)” field enter the IP address of the server you want to connect to.
In the “Username” field enter your username you have received from CactusVPN.
In the “Password” field enter your VPN password.
For “PPTP Encryption” select “Enable”.
For “STP” select “Disable”.
4. Below at “Optional Settings” change “MTU” to “Manual” and enter 1460 as value you can change as per requirements.
Enter an IP address for the DD-WRT access point.
5. Enable DHCP Server and make sure all 3 boxes are NOT checked: “Use DNSMasq for DNCP”, “Use
DNSMasq for DNS” and “DHCP-Authoritative”.
Click on “Apply settings”.
6. Go to “Security” tab -> “Firewall” set “Disable” for “SPI Firewall” .
7. Now go to “VPN Passthrough” tab and select “Enable” for “PPTP Passthrough” then click on “Apply
settings” .
8. Go to “Administration” tab, on the bottom of the page you will find “Reboot router” button – click it. After router
reboots it should connect to VPN automatically.
9. To check the connection status go to “Status” -> “WAN” . If next to “Login status” is written
“Connected” then connectin is set up succesefully. If not click to connect wait for abut 30 seconds and check if your
IP has been changed.
