8: Line and Tunnel Settings
EDS1100/2100 Device Server User Guide
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Enter the remote host address as an IP address or DNS name. The EDS1100/2100 device will
make a connection only if it can resolve the address. For DNS names, the EDS1100/2100 will re-
evaluate the address after being established for 4 hours. If re-evaluation results in a different
address, it will close the connection.
Connect Mode supports the following protocols:
TCP
AES encryption over TCP and UDP
When setting AES encryption, both the encrypt key and the decrypt key must be specified.
The encrypt key is used for data sent out. The decrypt key is used for receiving data. Both of
the keys may be set to the same value.
SSH
To configure SSH, the SSH client username must be configured. In Connect Mode, the
EDS1100/2100 unit is the SSH client. Ensure the EDS1100/2100 SSH client username is
configured on the remote SSH server before using it with the EDS1100/2100.
SSL
UDP
Is only available in Connect Mode because it is a connectionless protocol. For Connect Mode
using UDP, the EDS1100/2100 unit accepts packets from any device on the network. It will
send packets to the last device that sent it packets.
Telnet
Note:
The Local Port in Connect Mode is independent of the port configured in Accept
Mode.
There are six different connect modes:
Disable
No connection is attempted.
Always
A connection is always attempted.
Any Character
A connection is attempted if it detects any
character from the serial port.
Start Character
A connection is attempted if it detects a specific and configurable character from the serial
port.
Modem Control Asserted
A connection is attempted when the modem control pin is asserted in the serial line.
Note:
Configure the Modem Control Asserted setting (for DSR or DTR) to start a
Connect Mode connection when the signal is asserted. The unit will try to make a
connection indefinitely. If the connection closes, it will not make another connection
unless the signal is asserted again.
Modem Emulation
A connection is attempted by an ATD command.
Note:
While in the “Any Character” or “Start
Character” connection modes, the
EDS1100/2100 waits and retries the
connection if the connection cannot be
made. Once it makes a connection and then
disconnects, it will not reconnect until it sees
another character or the start character
again (depending on the configured setting).
