Vpn gennem router linksys wrt54gl fejl 619

Jeg får en fejl 619 når jeg forsøger at connecte gennem Linksys wrt54gl router.
Jeg har forwarded port 1723 til pptp - disabled windows firewall i services.

Jeg har fulgt denne guide her
http://www.howtonetworking.com/vpnissues/error619.htm

1)  This problem most likely is secure issue such as unsecured password. So, check the settings.
2) It could be the hardware issue. Try to re-setup the device or download the new driver or just reset the devices such as modem and router.
3) Reapply the service pack
4) If the RRAS is in a domain network, add the VPN to the appropriate group. To do this, go to Active Directory Users and Computers>domain name>Users, double-click the RAS and IAS Servers security group. Select the members and add the VPN server to this group. 2) Type netsh ras add registeredserver at a command prompt (registeredserver is vpn server name), and then press ENTER.
5) If the router is connectijg to a modem and setup DHCP to receive IP from the modem, you may try to assign static IP to the WAN port on the router.