Comtech EF Data CMR-5940 Manual - Manual (Page 39)

CMR-5940 Digicast Media Router PID Filter RS-422 Revision A
Device Management via User Interfaces MN/PIDFILDC4.IOM
4.3.1 Main Menu
Figure 4-14. Main Menu
4.3.2 Administration Menu
Figure 4-15. Administration Menu
4.3.2.1 Port Number Configuration
In addition to the features illustrated, one additional feature is available, for security
reasons, via the serial interface only. Modifying the port numbers prevents attacks on “well
known” ports by devices known as port scanners. This feature is configuration of the TCP
Port number for Telnet and HTTP protocols. Option
allows the operator to modify the
standard port numbers for Telnet (23) and HTTP (80) to prevent unauthorized access to the
device. Care should be taken not to use a reserved standard port number.
4-15