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SSO Delegated Authentication: Web Service Ports

Hi,  I've been looking through the following documentation and note the following stated 


For security reasons, Salesforce restricts the outbound ports you may specify to one of the following:

  • 80: This port only accepts HTTP connections.
  • 443: This port only accepts HTTPS connections.
  • 1024–66535 (inclusive): These ports accept HTTP or HTTPS connections.


Do you know if this is still the case & if the documentation is therefore up-to-date and correct?  The webservice I am trying to connect to is on port 444 therefore I believe login errors I may be receiving are due to the above specifications.


Thanks for helping. 


Yes i believe the documentation is correct, you won't be able to connect to an endpoint on port 444


Thanks SimoF. Do you know if it is possible to telnet from an SFDC environment or to somehow check otherwise if it can connect to a network ok?