Configuring DNS on IOCOMM

A Domain Name Server (DNS) makes addresses easier to manage by allowing the use of machine names in place of IP addresses. The actual IP addresses are obtained from the DNS server.

You will need to know which host is being used as the DNS (may be more than one). To allow IOCOMM to use DNS:

1. On the IOCOMM Main menu, select Global configuration.
2. Select Domain Name Service.
3. On the Domain Name Service page enter the following fields:

   
   First server

   This is the primary server for DNS.

   
   Second server

   This is a standby server and will be used if the first server fails.

   
   Third server

   This is a second standby server.

   
   Default domain name

   Your domain name (e.g. mycompany.com).

   
   IOCOMM host name

   This is the IOCOMM host name.

    

4. Select Submit. You will be returned to the Global configuration menu.
5. Select Return to the Main menu.

Changing Serial Line Configuration

Changing Physical Parameters

Changing Access Options

Changing Modem Options

Serial port settings need to match the device you are attaching to a port.

Note: No changes to settings will take effect until you activate the reset port(s) option at the bottom of the page.

Changing Physical Parameters

1. On the IOCOMM Main menu, select Serial ports configuration.
2. Select the port number for which you wish to set the physical parameters. You can configure one or more ports with the same settings by selecting additional ports on the Physical parameters page.
3. Select the Physical parameters option.

   Note: The Description field is for information only and is set to Asynchronous serial device by default.

   The fields allow you to specify:

   Terminal type	[wyse 50 ]
   Attached device	[Asynchronous terminal ]
   Baud rate	[9600 ]

   Note: The Terminal type field is for information only and is set to wyse50 as default.

4. For the Attached device and Baud rate options, select the down arrow for option list and then select required setting.
5. At this point, you can write this configuration to additional ports for which you require the same settings by selecting the port boxes.

   There is also an Expert mode for Physical parameters offering additional configuration options.

6. Select the Expert button. You will be presented with the following additional fields:

   Character framing	[8 data, no parity, 1 stop ]
   Inactivity timeout	[No timeout ]

   Character framing defines the format of the asynchronous characters on this link.

   Inactivity timeout allows dialled connections to be automatically shut down after a period of no data traffic.

7. For Character framing, select the down arrow and choose from the list.
8. For Inactivity timeout, select the down arrow and choose the appropriate timeout setting.
   
   Special wiring options cause the access server to ignore the RS-232 signals DCD or DSR.
   
   Special operations option allows the access server to be used with modems that do not raise RTS until a call is connected.

   
   Special wiring

   DCD ignored/not wired

   DSR ignored/not wired 

   
   Special operations required for attached modems

   RTS not raised until DCD present 

   
   Flow control parameters

   Hardware flow control

   Software (XON/XOFF) flow control

   None

   
   If required, data flow control can be performed using RS-232 signals or special XON/XOFF characters.

9. Select Check here to reset port and make changes immediate if you wish the new settings to be effective immediately.
10. Select Submit. Your changes will be saved and you will obtain the main Serial ports configuration page.
11. Change Access Options or Modem options, at this point if you wish. Otherwise, select Return to the Main menu .

Changing Access Options

1. On the IOCOMM Main menu, select Serial ports configuration.
2. Select the port number for which you wish to set the Access options. You can configure just one port, or by selecting additional ports on the Access options page, any number of ports with the same settings.
3. Select the Access options button.
4. If you require the port(s) to be Available for Outgoing services in addition to incoming, check the box.
5. If you require PPP to operate over this link, set your requirements here:

   
   Allow automatic PPP detection

   PPP uses PAP authentication

   PPP uses CHAP authentication
   

6. If you wish the Login banner and/or Message of the day to appear at start-up, check the boxes:
   

   
   
   Display login banner

   Display message of the day
   

7. For authentication, select from the following options:

   
   

8. Select the Expert button for additional configuration options.

   Granted capabilities

9. Items specify the local and remote access capability of the port(s). Check boxes to select.

   
   
   Login (to remote host)

   Allows the user to make ongoing connections to other hosts from the access server using telnet or rlogin.

   Framed access (PPP or SLIP connections)

   Allows the user to run PPP or SLIP connections on this port.

   NAS (Command Line Interface)

   Enables access to the CLI for non-admin (user level) commands.

   Admin

   Enables access to the CLI with a full set of administration commands.

    

   Default command [shell ]

   The Default command field defines what happens when the login sequence completes successfully and shell will be most commonly used.

   The shell (default) command presents the user with a Command Line Interface from which they can run any command for which they have the necessary granted access.

   Example: To make an automatic connection to a specific host, the following could be used:

   rlogin -1 newuser signup.my.domain

10. To change the command, delete the old entry and type in the new command.
11. You can now write this configuration to additional ports for which you require the same settings. Check the additional port boxes.
12. Select the Check here to reset port and make changes immediate box if you wish the new settings to be effective immediately.
13. Select Submit. Your changes will be saved and you will return to the main Serial ports configuration page.
14. To change the Physical parameters or Modem options, you can select them from here and follow the appropriate instructions. Otherwise, select Return to the Main menu .

Changing Modem Options

1. On the IOCOMM Main menu, select Serial ports configuration.
2. Select the port number for which you wish to set Modem options. You can configure just this port, or by selecting additional ports on the Modem options page, any number of ports with the same settings.
3. Select Modem options.

   Modem options (initialisation commands) available on this page are listed below. Entries shown to the right of each field are the IOCOMM factory default settings.

   1st init string	[AT ]
   Response	[OK ]
   2nd init string	[ATV1 ]
   Response	[OK ]
   3rd init string	[ATS0=1 ]
   Response	[OK ]
   Dial string	[ATD ]
   Response	[CONNECT ]
   Modem disconnect	[%D+++%DATH%D ]
   Response	[OK ]

   These default settings will work with many modem types.

4. If you need to edit commands, delete the existing text, insert the new text and then select any additional ports to which you wish to write the new configuration.

   Note: Initialisation strings should not contain any commands that may cause the modem to pause operation. For example, the save configuration command on some modems.

5. Select Check here to reset port and make changes immediate
6. Select Submit. You will return to the main Serial ports configuration page.
7. Select Return to the Main menu.

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Getting Started | Web Access | First Time Configuration Tour | Configuring DNS on IOCOMM | Changing Serial Line Configuration | Resetting a Serial Port | Using a Modem for Dial-in Operation | Outgoing Services | Disabling Incoming Calls by Port | Adding a Terminal | Configuring the Synchronous Port (B) | Printing | Configuring RADIUS | Local Authentication | Dynamic Routing (RIP) | Enabling TCP Security | Global Messages | Configuring Status Logging | Telnet Service (telnetd) | Monitoring Status | Making Changes to IOCOMM