Robustel R5020 - Page 106

Robustel R5020 User Guide
RT_UG_R5020_v.1.0.2 Mar. 17, 2023 106/167
General Settings @ OpenVPN
Item
Description
Default
Listen Port
Enter the listening port of this end.
1194
Interface Type
Select from “TUN”, “TAP” which are two different kinds of device
interface for OpenVPN. The difference between TUN and TAP device is
that a TUN device is a point-to-point virtual device on network while a
TAP device is a virtual device on Ethernet.
TUN
Username
Enter the username used for “Password” or “X509CA Password”
authentication type.
Null
Password
Enter the password used for “Password” or “X509CA Password”
authentication type.
Null
Authentication Type
Select from “None”, “Preshared”, “Password”, “X509CA” and “X509CA
Password”.
Note: “None” and “Preshared” authentication type are only working
with P2P mode.
None
Enable IP Pool
Click the toggle button to enable/disable this option. When enabled, the
client will get the virtual IP from the address pool.
OFF
Local IP
Enter the local virtual IP.
10.8.0.1
Remote IP
Enter the remote virtual IP.
10.8.0.2
Client Subnet
The client virtual IP network address.
10.8.0.0
Client Subnet
Netmask
The client virtual IP network address mask.
255.255.255.0
Encrypt Algorithm
Select from “BF”, “DES”, “DES-EDE3”, “AES128”, “AES192” and
“AES256”.
 BF: Use 128-bit BF encryption algorithm in CBC mode
 DES: Use 64-bit DES encryption algorithm in CBC mode
 DES-EDE3: Use 192-bit 3DES encryption algorithm in CBC mode
 AES128: Use 128-bit AES encryption algorithm in CBC mode
 AES192: Use 192-bit AES encryption algorithm in CBC mode
 AES256: Use 256-bit AES encryption algorithm in CBC mode
BF
Authentication
Algorithm
Choose from "MD5", "SHA1", "SHA256" and "SHA512".
SHA1
Max Clients
Set the maximum number of client connections in server mode.
10
Renegotiation
Interval
Set the renegotiation interval. If connection failed, OpenVPN will
renegotiate when the renegotiation interval reached.
86400
Keepalive Interval
Set keepalive (ping) interval to check if the tunnel is active.
20
Keepalive Timeout
Set the keepalive timeout. Trigger OpenVPN restart after n seconds pass
without reception of a ping or other packet from remote.
120
TUN MTU
Set the MTU of tunnel.
1500
Max Frame Size
Set the slice size of the data to be transferred in the tunnel.
Null
Private Key Password
Enter the private key password under the “X509CA” and “X509CA
Password” authentication type.
Null
Enable Compression
Click the toggle button to enable/disable this option. Enable to
compress the data stream of the header.
ON