Robustel R1520 User Guide
RT056_UG_R1520_v.1.0.3 Dec. 25, 2021 99/159
General Settings @ OpenVPN
Enter a description for this OpenVPN tunnel.
Select from “Auto”, “P2P”, “Client” or “Server”.
Select from “UDP”, “TCP-Client” or “TCP-Server”.
Enter the end-to-end IP address or the domain of the remote OpenVPN
server.
Enter the end-to-end listener port or the listener port of the OpenVPN
server.
Enter the IP address or domain name.
Enter the listener port at this end.
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.
Enter the username used for “Password” or “X509CA Password”
authentication type.
Enter the password used for “Password” or “X509CA Password”
authentication type.
Select from “None”, “Preshared”, “Password”, “X509CA” and “X509CA
Password”.
Note: “None” and “Preshared” authentication type are only working
with P2P mode.
Click the toggle button to enable / disable this option. When enabled,
the client will obtain a virtual IP from the address pool.
Enter the local virtual IP.
Enter the remote virtual IP.
Client virtual IP network address.
Client virtual IP network address mask.
Select from “BF”, “DES”, “DES-EDE3”, “AES-128”, “AES-192” and
“AES-256”.
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
Select from "MD5", "SHA1", "SHA256"or "SHA512".
Set the retention timeout. If the connection continues to timeout during
this time, the OpenVPN tunnel will be re-established.
Set the renegotiation interval. If connection failed, OpenVPN will
renegotiate when the renegotiation interval reached.
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