SnapGear 1.7.8 - Manual (Page 80)

Configuring the remote VPN client
After setting up the SnapGear PPTP VPN server, the remote VPN clients can be
configured to securely access the local network. You need to enter the VPN client
username and password that your remote users will use to access the SnapGear PPTP
VPN from the remote site.
The names may or may not be the same as your normal network username and
password, and should be different from the username and password used by your remote
users use to access their local ISP.
The following figure shows the VPN PPTP IP address:
Virtual Private Networking
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Figure 7.5 VPN PPTP IP address
Obtain the current IP address of the SnapGear appliance PPTP server. This address
may change if your office network has an external DHCP server (i.e. your ISP
dynamically assigns your an IP address).