L2TP and PPTP for the Motorola MG7550Router Sceenshot
Motorola Cable Modem : VPN -> L2TP PPTP Back Back to Basic Page Status Basic Router Advanced Router Wireless Protection & Parental Control VPN Software Connection Diagnostics Security Event Log Setup DHCP DHCPv6 LAN IPv6 DDNS Backup/Restore Options IP Filtering MAC Filtering Port Filtering Forwarding Port Triggers RIP DMZ Basic Radio WPS RADIUS WEP Guest Access Advanced WMM Scan/Bridge Firewall Basic Firewall EventLog Parental Control IPsec L2TP/PPTP Event Log L2TP/PPTP L2TP/PPTP Setup L2TP Server Disabled Enabled L2TP Server: Enable or Disable the L2TP Server. The L2TP/PPTP page allows you to configure server and security settings. The L2TP (Layer 2 Tunneling Protocol) and PPTP (Point-to-Point Tunneling Protocol) both allow PPP frames to be tunneled through the network. PPTP is a Microsoft proprietary protocol, which is very similar to L2TP. PPTP Server Disabled Enabled PPTP Server: Enable or Disable the PPTP Server. The L2TP/PPTP page allows you to configure server and security settings. The L2TP (Layer 2 Tunneling Protocol) and PPTP (Point-to-Point Tunneling Protocol) both allow PPP frames to be tunneled through the network. PPTP is a Microsoft proprietary protocol, which is very similar to L2TP. --> PPP Address Range PPP Address Range: Configure the dedicated IP address pool for L2TP/PPTP. The LAN IP subnet at one end of the VPN tunnel must be different from the LAN.
IP subnet at the other end of the VPN tunnel. For example, if one side's LAN subnet is 192.168.0.x, then the other side should be 192.168.1.x (where the subnet mask in this example is 255.255.255.0). Start . . . End . . . PPP Security MPPE Encryption Disabled Enabled MPPE Encryption: Select Enable to enable MPPE (Microsoft Point-to-Point Encryption). MPPE is used to enhance the confidentiality of PPP-encapsulated packets. It uses the RSA RC4 encryption algorithm. Users Username Username: Enter the Username for the L2TP or PPTP tunnel. Password Password: Enter the Password for the L2TP or PPTP tunnel. Confirm Password Confirm Password: Re-enter to confirm the Password. User List User List: Show the existing user list. User list is empty. L2TP Server Pre-Shared Phrase Pre-Shared Phrase: Enter a key (Pre-Shared key) for authentication. This key is used by IPsec to validate the computer as a trusted machine.