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NetBridge Installation
NetBridge has eight serial ports plus two Ethernet ports. The first Ethernet port is connected to the C100’s
n
etwork. The second port is for connection to the Internet; this can be via DHCP server (for a dynamically
assigned IP address), or a static IP address defined by the operator. The IP number (in ‘dot’ notation) will be
shown on the front panel while the unit is powered.
I
n facilities with a firewall to the Internet, this address is likely to be for internal use within the installation and
not visible to the outside world. For external diagnostic access, the firewall will have to be set to pass (and
redirect) the appropriate incoming traffic to the NetBridge unit, which will have to be agreed with and
configured by the facility’s IT staff.
NetBridge operation is more fully described in a separate document which is supplied with the hardware.
Connection
The eight serial ports are all located on the single 62-pin connector (a breakout adaptor is provided). Serial ports
1 to 7 can be connected to the ‘Console’ port on the Centuri’s CPU card (on port TTY-E), allowing one NetBridge
to have terminal diagnostic access to up to seven C100 processors.
Serial port 8 may be connected to a data terminal (or software terminal emulator) for permanent local diagnostic
access without requiring login. (see Appendix C for cable details)
Access
For security purposes, the NetBridge file transfer functions can only be accessed by one registered user who
must be logged into the Central File Server (CFS). This uses the secure HTTPS protocol, which must be passed
through any firewall (and redirected as required), although this is unlikely to cause any security concerns as it
has 128bit Secure Socket Layer encryption. For file transfer between the console and the CFS, the user must be
logged in at the console itself. For file transfer between the CFS and another computer (eg. authorised freelance
engineer or SSL support staff), the user may login from an Internet connection, with the same username and
password security requirements.
Diagnostic access also uses ‘Secure Socket Layer’ encrypted login, and is available to multiple users
simultaneously over the TCP/IP network link. They can log-in as terminal users and each run the terminal client
application on the NetBridge to give them switched access to the seven serial ports.
File Transfer
If a console operator wishes to export a session template to the CFS so that others may create offline setups from
it, secure login from the C100 allows that file to be uploaded to the facility’s private account on the CFS, so that
registered users can download the template and upload their own setups. Any existing setups in that account
can be downloaded from the CFS to the console’s hard disk.
Remote Diagnostics
In order to access a C100’s diagnostics through its NetBridge, first you need to know the IP address of that unit
(on the front panel, or defined by a firewall/router), which can be determined by contacting the facility’s IT staff
or consulting the security arrangements agreed with them. Once a secure connection has been made, running the
terminal server application on the NetBridge will allow you to connect from the Internet to any of the seven
‘console diagnostic’ ports on that NetBridge.
Installation Wiring
Section 5
Page 41