Brother HL 1270N - Manual (Page 25)

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IP Security
Brother print servers provide a means of allowing only host computers with authorized IP
addresses to access the print server. This is very useful for applications where general access
to the printer is not allowed. The console command
SET IP ACCESS ENABLED
ipaddress enters a host computer IP address into the access table of the print server (where
ipaddress is the IP address of the host computer; refer to Appendix A for information on using
the print server console). To remove an IP address, use the command
SET IP ACCESS
DISABLED ipaddress. To re-enable general access, use the command SET IP
ACCESS ALL.
Raw TCP ports
The Brother range of print servers provide a raw TCP port capability that can be used by any
application that can open and send data to a TCP port. The port number is 9100 (238C hex).
The ports pass data through unmodified, so there is no TELNET interpretation provided.
When using the raw TCP ports, make sure that TELNET interpretation is disabled in your
software or else you may get distorted printouts.
If you need a different TCP port number or if you want additional TCP ports, you may define
a TCP port number on any service by using the console command:
SET SERVICE servicename TCP nn
where servicename is the name of the service, and nn is the desired port number (must be
greater than 1023). Refer to Appendix A for information on using the console.