Robustel GoRugged R3000 Lite User Guide
RT_UG_R3000 Lite_v.1.4.1 15.11.2016 72 / 135
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Select from “tun” and “tap” which are two different kinds of device interface for
OpenVPN.
The difference between 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.
Select from four different kinds of authentication ways: “Pre-shared”,
“Username/Password”, “X.509 cert” and “X.509 cert+user”.
Define the local IP address of OpenVPN tunnel.
Define the remote IP address of OpenVPN tunnel.
Tick to enable NAT Traversal for OpenVPN. This item must be enabled when
router under NAT environment.
Set ping interval to check if the tunnel is active.
Restart to establish the OpenVPN tunnel if ping always timeout during this time.
Select “LZO” to use the LZO compression library to compress the data stream.
Select from “NONE”, “BF-CBC”, “DES-CBC”, “DES-EDE3-CBC”, “AES-128-CBC”,
“AES-192-CBC” and “AES-256-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.
Maximum Transmission Unit. It is the identifier of the maximum size of packet,
which is possible to transfer in a given environment.
Set the Max Frame Size for transmission.
Select the log output level which from low to high: “ERR”, “WARNING”, “NOTICE”
and “DEBUG”. The higher level will output more log information.
You can enter some other PPP initialization strings in this field. Each string can be
separated by a space.
Subnet&Subnet
Mask@Local
Route
Set the subnet and subnet Mask of local route.
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