Digi Connect SP User Manual page 43

You can use a socket tunnel to connect two network devices: one on the Digi device's local network and the other on
the remote network. This is especially useful for providing SSL data protection when the local devices do not support
the SSL protocol.
One of the endpoint devices is configured to initiate the socket tunnel. The tunnel is initiated when that device opens
a TCP socket to the Digi device device on the configured port number. The Digi device then opens a separate
connection to the specified destination host. Once the tunnel is established, the Digi device acts as a proxy for the
data between the remote network socket and the local network socket, regardless of which end initiated the tunnel.
Socket Tunnel settings include:
•
Enable: Enables or disables the configured socket tunnel.
•
Timeout: The timeout (specified in seconds) controls how long the tunnel will remain connected when there is no
tunnel traffic. If the timeout value is zero, then no timeout is in effect and the tunnel will stay up until some other
event causes it to close.
•
Initiating Host: The hostname or IP address of the network device which will initiate the tunnel. This field is
optional.
•
Initiating Port: Specify the port number that the Digi device will use to listen for the initial tunnel connection.
•
Initiating Protocol: The protocol used between the device that initiates the tunnel and the Digi device. Currently,
TCP and SSL are the two supported protocols.
•
Destination Host: The hostname or IP address of the destination network device.
•
Destination Port: Specify the port number that the Digi device will use to make a connection to the destination
device.
•
Destination Protocol: This is the protocol used between Digi device and the destination device. Currently, TCP
and SSL are the two supported protocols. This protocol does not need to be the same for both connections.
•
Click the Add button to add a socket tunnel. Click the Apply button to save the settings. Once the socket tunnel is
configured, check the Enable check box to enable the socket tunnel.
Advanced network settings
The Advanced Network Settings define the network interface. These settings rarely need to be changed. Contact your
network administrator for more information about these settings.
IP Settings
Use the IP settings to manage IP address configuration.
•
Host Name: The host name to be placed in the DHCP Option 12 field. This is an optional setting which is only used
when DHCP is enabled.
The host name is validated and must contain only specific characters. These restrictions are as defined in RFCs
952, 1035, 1123 and 2132. The following characters are permitted:
Alphabetic: upper and lower case letters A through Z and a through z

Numeric: digits 0 through 9

Hyphen (dash): -

Period (dot): .

The host name value can be a single name, or a fully qualified domain name, whose parts are separated with a
period character. Each part must follow the following rules:
Must begin with a letter or digit

Must end with a letter or digit

Digi Connect Family and ConnectPort TS Family User Guide 43