In the Device Ports - Settings page, configure IP and data (serial) settings for individual ports, and if the port connects to an external modem, configure modem settings as well.
To enter device port settings:
Complete or view the following sections:
Mode |
The status of the port; displays automatically. |
Name |
The name of the port. Valid characters are letters, numbers, dashes (-), periods and underscores ( _ ). |
Banner |
Text to display when a user connects to a device port by means of Telnet, SSH, or TCP. If authentication is enabled for the device port, the banner displays once the user successfully logs in. Blank is the default. |
Break Sequence |
A series of one to ten characters users can enter on the command line interface to send a break signal to the external device. A suggested value is Esc+B (escape key, then uppercase “B” performed quickly but not simultaneously). You would specify this value as \x1bB, which is hexadecimal (\x) character 27 (1B) followed by a B. |
Logging |
Click the Settings link to configure file logging, email logging, local logging, and PC Card logging. |
Zero Port Counters |
Resets all of the numerical values in the Port Counters table at the bottom of the page to zero (0). |
Connected to |
The type of device connected to the device port. Currently, the SLC supports Lantronix's SecureLinx Remote Power Manager (SLP8 and SLP16). If the type of device is not listed, select undefined. If you select SLP8 or SLP16, click Commands. The Device Ports - SLP web page displays. |
Enable Telnet in |
Enables access to this port through Telnet. Disabled by default. |
Enable SSH In |
Enables access to this port through SSH. Disabled by default. |
Enable TCP In |
Enables access to this port through a raw TCP connection. Disabled by default. |
Port |
Automatically assigned Telnet, SSH, and TCP port numbers. You may override this value, if desired. |
Authenticate |
If selected, the SLC requires user authentication before granting access to the port. Authenticate is selected by default for Telnet in and SSH in, but not for TCP in. |
IP Address |
IP address used for this device port so a user can Telnet, SSH, or establish a raw TCP connection to this address and connect directly to the device port. For Telnet and SSH, the default TCP port numbers (22 and 23, respectively) are used to connect to the device port. For raw TCP, the TCP port number defined for TCP In to the device port is used. |
Web SSH/Telnet Columns |
Number of columns in the Web SSH/Telnet applet when this device port is accessed via the applet. |
Web SSH/Telnet Rows |
Number of rows in the Web SSH/Telnet applet when this device port is accessed via the applet. |
Note: Check the serial device’s equipment settings and documentation for the proper settings. The device port and the attached serial device must have the same settings.
Baud |
The speed with which the device port exchanges data with the attached serial device. From the drop-down list, select the baud rate. Most devices use 9600 as the terminal/administration port, so the device port defaults to this value. Check the equipment settings and documentation for the proper baud rate. |
Data Bits |
Number of data bits used to transmit a character. From the drop-down list, select the number of data bits. The default is 8 data bits. |
Stop Bits |
The number of stop bit(s) used to indicate that a byte of data has been transmitted. From the drop-down list, select the number of stop bits. The default is 1. |
Parity |
Parity checking is a rudimentary method of detecting simple, single-bit errors. From the drop-down list, select the parity. None is the default. |
Flow Control |
A method of preventing buffer overflow and loss of data. The available methods include none, xon/xoff (software), and RTS/CTS (hardware). The default is none. |
Enable Logins |
For serial devices connected to the device port, displays a login prompt and authenticates users. Successfully authenticated users are logged into the command line interface. Disabled is the default and is the correct setting if the device port is the endpoint for a connection. |
Check DSR on Connect |
If this setting is enabled, the device port only establishes a connection if DSR (Data Set Ready) transitions to an asserted state. Disabled is the default unless dial-in, dial-out, or dial-back is enabled for the device port. |
Disconnect on DSR |
If a connection to a device port is currently in session, and the DSR signal transitions to a de-asserted state, the connection disconnects immediately. Disabled is the default unless dial-in, dial-out, or dial-back is enabled for the device port. |
Note: Depending on the State and Mode you select, the availability of subsequent fields differs.
State |
Indicates whether an external modem is attached to the device port. If enabling, set the modem to dial-out, dial-in, dial-back, dial-on-demand, or dial in & dial-on-demand. Disabled by default. |
Mode |
The format in which the data flows back and forth: Text: In this mode, the SLC assumes that the modem will be used for remotely logging into the command line. Text mode can only be used for dialing in or dialing back. Text is the default. PPP: This mode establishes an IP-based link over the modem. PPP connections can be used in dial-out mode (e.g., the SLC connects to an external network), dial-in mode (e.g., the external computer connects to the network that the SLC is part of), or dial-on-demand. |
Initialization Script |
Commands sent to configure the modem may have up to 100 characters. Consult your modem’s documentation for recommended initialization options. If you do not specify an initialization script, the SLC uses a default initialization string of AT S7=45 SO=0 L1 V1 X4 &D2 &c1 E1 Q0. Note: We recommend that the modem initialization script always be pre-pended with AT and include E1 V1 x4 Q0 so that the SLC may properly control the modem. |
Caller ID Logging |
Select to enable the SLC to log caller IDs on incoming calls. Disabled by default. Note: For the Caller ID AT command, refer to the modem user guide. |
Modem Command |
Modem AT command used to initiate caller ID logging by the modem. Note: For the AT command, refer to the modem user guide. |
Timeout Logins |
If you selected Text mode, you can enable logins to time out after the connection is inactive for a specified number of minutes. The default is No. This setting is only applicable for text mode connections. PPP mode connections stay connected until either side drops the connection. Disabled by default. |
Dial Back Number |
Users with dial-back access can dial into the SLC and enter their login and password. Once the SLC authenticates them, the modem hangs up and dials them back. Select the phone number the modem dials back |
Negotiate IP Address |
If the SLC and/or the serial device have dynamic IP addresses (e.g., IP addresses assigned by a DHCP server), select Yes. Yes is the default.
If the SLC or the modem have fixed IP addresses, select No, and enter the local IP (IP address of the port) and remote IP (IP address of the modem). |
Authentication |
Enables PAP or CHAP authentication for modem logins. PAP is the default. With PAP, users are authenticated by means of the Local Users and any of the remote authentication methods that are enabled. With CHAP, the CHAP Handshake fields authenticate the user. |
CHAP Handshake |
The host/secret (for UNIX systems) or user/password (for Windows systems) used for CHAP authentication. May have up to 128 characters. |
Same authentication for Dial-in & Dial-on-Demand (DOD) |
Select this option to let incoming connections (dial-in) use the same authentication settings as outgoing connections (dial-on-demand). If this option is not selected, then the dial-on-demand connections take their authentication settings from the DOD parameter settings. If DOD Authentication is PAP, then the DOD CHAP Handshake field is not used. |
DOD Authentication |
Enables PAP or CHAP authentication for dial-in & dial-on-demand. PAP is the default. With PAP, users are authenticated by means of the Local Users and any of the remote authentication methods that are enabled. With CHAP, the DOD CHAP Handshake fields authenticate the user. |
DOD CHAP Handshake |
For DOD Authentication, enter the host/username for UNIX systems) or secret/user password (for Windows systems) used for CHAP authentication. May have up to 128 characters. |
Enable NAT |
Select to enable Network Address Translation (NAT) for dial-in and dial-out PPP connections on a per modem (device port or PC Card) basis. Users dialing into the SLC access the network connected to Eth1 and/or Eth2. Note: IP forwarding must be enabled on the Network - Settings page for NAT to work. |
Dial-out Number |
Phone number for dialing out to a remote system or serial device. May have up to 20 characters. Any format is acceptable. |
Dial-out Login |
User ID for dialing out to a remote system. May have up to 32 characters. |
Dial-out Password and Retype |
Password for dialing out to a remote system. May have up to 64 characters. |
Idle Timeout |
Timeout for PPP dial-in and dial-on-demand connections. Select Yes (default) for the SLC to terminate the connection if no traffic is received during the configured idle time. Enter a value of from 1 to 9999 seconds. The default is 30 seconds. |
Restart Delay |
The number of seconds after the timeout and before the SLC attempts another connection. The default is 30 seconds. |
To save settings for just this port, click Apply.
To save selected settings to ports other than the one you are configuring:
a) From the Apply Settings drop-down box, select none, a group of settings, or All.
b) In to Device Ports, type the device port numbers, separated by commas; indicate a range of port numbers with a hyphen (e.g., 2, 5, 7-10).
Note: It may take a few minutes for the system to apply the settings to multiple ports.
Port Counters describe the status of signals and interfaces. The SLC updates and increments them as signals change and data is sent in and out of the system. These counters can be used to help troubleshoot connections or diagnose problems because they give the user an overview of the state of various parameters. By setting them to zero and then re-checking them at a later time, the user can view changes in status.
The bottom part of the page displays the flow control lines and port statistics for the device port. The system automatically updates these values. To reset them to zeros, select the Zero port counters checkbox.
Note: Status and statistics shown on the web interface represent a snapshot in time. To see the most recent data, reload the web page.
See also