Well the same people who gave your the VPN software should have provided you with some settings and requirements. But anyway..
1. Make sure you set a DHCP reservation.
- [Setup > Network Settings]
- Look under "Number of Dynamic DHCP Cliens" and choose his. You can usually tell by host name. If not, turn every other device off except his.
- Click Reserve and his info should come up under "Add DHCP Reservation" and click Save
- Click on save settings up top.
2. Turn down Firewall.
- [Advanced > Firewall Setting] Make sure UDP and TCP Endpoint Filtering is set to Endpoint Independent.
- Make sure IPSec is checked under ALG configuration.
3. Make sure his laptop is connecting wired. Sometimes the client software only installs on the local area connection IPStack.
4. Turn off securespot. [Advanced > Securespot]
Try it that way, with the computer out of the DMZ. If it doesn't work, there are specific ports you need to open, and must contact your work's IT[/list]