Gre - NetComm NTC-400 Series User Manual

Item
MPPE Optional field –
Encryption disabled by
default.
NAT before Optional field –
Tunnelling
disabled by
default.
LCP Echo Type Auto = default
setting.
Value Ranges:
1 - 99999 for
Interval Time
1 - 999 for Failure
Times
Tunnel Disabled by
default.
Edit Button
Undo Button
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6.1.5

GRE

Generic Routing Encapsulation (GRE) is a tunnelling protocol developed by Cisco Systems that encapsulates a wide variety of
network layer protocols inside virtual point‐to‐point links over an Internet Protocol internetwork.
Deploy an NTC-400 Series Router router at a remote site and establish a virtual private network with the control centre using
GRE tunnelling. All client hosts behind the router can make data communication with server hosts behind control centre
router.
GRE Tunnelling is similar to IPSec Tunnelling where the client requests the tunnel establishment with the server. Both the
client and the server must have a Static IP or an FQDN. Any peer router can work as either a client or a server, even using the
same set of configuration rules.
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Notes
Specify whether PPTP server supports MPPE Protocol.
Check  Enable to enable MPPE.
Note – when MPPE Encryption is enabled, the Authentication
Protocol PAP /CHAP options will not be available.
Check  Enable to enable NAT function for this PPTP tunnel.
Specify the LCP Echo Type for this PPTP tunnel: Auto, User‐defined, or
Disable
Auto – the system sets the Interval and Max. Failure Time.
User‐defined – enter the Interval and Max. Failure Time.
The default value for Interval is 30 seconds, and Maximum Failure Times
is 6 times
Disable – disable the LCP Echo.
Check  Enable to enable this PPTP tunnel.
Click Save to create the client account.
Click Undo button to cancel the settings.
Click Back button to return to the previous page.
Table 165 – PPTP Client Configuration
Description
User Guide