Robustel R3000 Lite User Guide - Manual (Page 64)

Robustel GoRugged R3000 Lite User Guide
RT_UG_R3000 Lite_v.1.0.0 23.12.2013 63 / 113
Confidential
Interface
Select from “tun” and “tap” which are two different kinds of device
interface for OpenVPN.
The difference between a tun and tap device is this: a tun device is a
virtual IP point-to-point device and a tap device is a virtual Ethernet
device.
tun
Authentication
Select from four different kinds of authentication ways: “Pre-shared”,
“Username/Password”, “X.509 cert” and “X.509 cert+user”.
None
Local IP Define the local IP address of OpenVPN tunnel. 10.8.0.1
Remote IP Define the remote IP address of OpenVPN tunnel. 10.8.0.2
Enable NAT
Tick to enable NAT Traversal for OpenVPN. This item must be
enabled when router under NAT environment.
Disable
Ping Interval Set ping interval to check if the tunnel is active. 20
Ping -Restart
Restart to establish the OpenVPN tunnel if ping always timeout
during this time.
120
Compression
Select from “None”and”LZO”, Select “LZO” to use the LZO
compression library to compress the data stream.
LZO
Encryption
Select from “BF-CBC”, “DES-CBC”, “DES-EDE3-CBC”, “AES128-CBC”,
“AES192-CBC” and “AES256-CBC”.
BF-CBC: Uses the BF algorithm in CBC mode and 128-bit key.
DES-CBC: Uses the DES algorithm in CBC mode and 64-bit key.
DES-EDE3-CBC: Uses the 3DES algorithm in CBC mode and 192-bit
key.
AES128-CBC: Uses the AES algorithm in CBC mode and 128-bit key.
AES192-CBC: Uses the AES algorithm in CBC mode and 192-bit key.
AES256-CBC: Uses the AES algorithm in CBC mode and 256-bit key.
BF-CBC
MTU
Maximum Transmission Unit. It is the identifier of the maximum size
of packet, which is possible to transfer in a given environment.
1500
Max Frame Size Set the Max Frame Size for transmission. 1500
Verbose Level
Select the log output level which from low to high: “ERR”,
“WARNING”, “NOTICE” and “DEBUG”. The higher level will output
more log information.
ERR
Expert Options
You can enter some other PPP initialization strings in this field. Each
string can be separated by a space.
Null
Client Manage
Click “Add” to add a OpenVPN client info which include “Common
Name”, “Password”, “Client IP”, “Local Static Route” and “Remote
Static Route”. This field only can be configured when you select
“Username/Password” in “Authentication”.
Null