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How to disable telnet on a Brocade switch

Last Updated:

Applies to

Brocade Fabric OS


  • The Telnet service is vulnerable, as information exchanged are un-encrypted
  • It allows anyone within local network to sniff the data including login credentials in plain text that passes between the telnet client and the server. 
  • Due to security policies, it would be required for few organization to disable unsecured protocols such as Telnet (TCP 23) in their environment and use secure protocol such as SSH for remote management purposes.
  • Synopsis from vulnerablity scanner will report  The remote Telnet server transmits traffic in cleartext
  • Disabling Telnet will also resolve many security vulnerabilities related to Telnet which may be detected by any security scanner used in the organization.


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