User's Manual

YML40V
www.netcomm-commercial.com.au
NTC-40WV –HSPA+ M2M WiFi Router with Voice
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HSPA+ M2M WiFi Router with Voice NETCOMM WIRELESS M2M SERIES – NTC-40WV
GRE
The Generic Route Encapsulation (GRE) protocol is used in addition to Point-to-Point Tunnelling Protocol (PPTP) to create VPNs (virtual private networks) between clients and servers or between
clients only. Once a PPTP control session establishes the VPN tunnel GRE is used to securely encapsulate the data or payload.
ITEM
DEFINITION
Profile Type
Select the type of VPN connection to use.
Enable VPN
Enable or Disable the VPN connection.
Profile Name
A name used to identify the VPN connection.
VPN Server Address
The IP Address on which the VPN server is running.
TTL
The Time To Live field, an 8-bit field used to remove an undeliverable data packet from a network to avoid unnecessary network traffic across the internet. The default value of 255 is
the upper limit on the time that an IP datagram can exist. The value is reduced by at least one for each hop the data packet takes to the next router on the route to the datagram’s
destination. If the TTL field reaches zero before the datagram arrives at its destination the data packet is discarded and an error message is sent back to the sender.
Verbose Logging
Enable extended logging information for the VPN connection.
Reconnect Delay
The delay before attempting to reconnect to the VPN service.
Reconnect Retries
The number of times to attempt to reconnect to the VPN service.
Table 19: VPN - GRE Settings