Direct And Indirect Proxy Connections - DPS Telecom NetGuardian 216T User Manual

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Permanent TCP (during a proxy connection, the connection will never time out).
UDP
Makes reach-through available at UDP ports (up to 4 UDP ports available).
CRFT
Causes the data port to have the same functionality as the front panel craft port.
CAP
Allows the user to capture debug information. The debug information is stored in the receive queue of the
NetGuardian (See Section 3.8, "Monitoring Data Port Activity" for more information). This is used primarily as
a troubleshooting feature.
ECU
ECU not used on NetGuardian 216T.
MDM
Modem option not used on NetGuardian 216T.
2.4.7.2

Direct and Indirect Proxy Connections

The NetGuardian supports two proxy connections, direct and indirect. In a direct proxy connection, the user
enters an IP address and port number to Telnet directly to a TCP serial port. In an indirect connection, the user
navigates the TTY menu to select a proxy port. Since the TTY interface is password protected, indirect
connections are preferred. Some users prefer to disable direct proxy for all connections in order to enforce the
password security provided by the TTY interface.
One way to disable proxy connections is to set the proxy port to an uncommon value. This restricts the access of
other users, but it is more convenient and secure to set the data port to off in the Type field. When set to off the
port is no longer associated with a TCP socket, which effectively disables the port from direct access.
Use the following steps to select proxy connections:
1. From the Edit menu > Ports screen, scroll down to the Data Ports section.
2. Enter a description and click on the TCP link (see Figure 2.4.7).
3. Under the Type column click on the drop-down menu and select the appropriate proxy connection (see
Figure 2.4.7.2).
4. Click the Submit Data button to save your configuration settings.
Fig. 2.4.7.2. Set proxy connections in Edit menu > Ports screen > Data Ports