User’s Manual of VCG-1500WG-LTE
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Figure 5-4-1-1 GRE Configuration
（
Note: first to ensure that both ends of the established GRE can obtain the public IP address by dialing.
）
Object
Description
Name
It is limited to use characters 0-9, a-z and A-Z. Repeating the same name is not possible.
Remote IP
Remote public network IP
Remote Subnet
Format is 192.168.1.0/24.
Interface IP address
The appointed virtual interface IP address.
Local WAN IP
IP address is used to create tunnel, if it is blank, it means to use WAN IP address.
MTU
The maximum data packets which can go through tunnel.
5.4.2 PPTP
GRE is VPN
（
Virtual Private Network
）
third tunnel protocol, that is to adopt Tunnel technology among protocols.
Figure 5-4-2-1 PPTP Configuration
