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IP port customization? (telnet)

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The Question is:

I am using the TCPIP> facility (OpenVMS 7.1/Alpha) and trying to set the port
 for telnet to something other than 23 (for security purposes). The command
 ENABLE SERVICE TELNET /PORT=nn only works for port 23, so there must be a
 config file somewhere to ent
er a list of permissible ports. Any suggestions?

The Answer is :

  For security, the OpenVMS Wizard finds it preferable to set up OpenVMS
  host security, break-in evasion, passwords, and auditing and alarms
  correctly, rather than attempting to maintain security through obscurity.
  Appropriate IP firewall(s) -- for monitoring and controlling both inbound
  and outbound IP traffic -- are also of obvious interest here.
  Various TCP/IP tools and utilities are built to assume the use of the
  particular (assigned) IP ports.  Some of topics 1316, 2628, 3903 and
  3778 might also be of interest here.

answer written or last revised on ( 9-JUN-2000 )

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