venkatamandavilli-code commented on issue #68382:
URL: https://github.com/apache/airflow/issues/68382#issuecomment-4732328662

   Thanks for reporting this.
   
   I agree that connection port validation should be enforced closer to the 
point where the connection is created or updated rather than being discovered 
later during task execution.
   
   From a user perspective, a connection with an invalid port appears to be 
successfully configured, but the resulting failures only occur when a hook or 
provider attempts to use it. This can make troubleshooting more difficult 
because the root cause is separated from the place where the incorrect value 
was originally entered.
   
   Since valid network ports have a well-defined range (0–65535), enforcing 
validation consistently across the model, API, CLI, and UI would help prevent 
invalid configurations from being persisted and reduce runtime errors.
   
   This also seems like a good candidate for a centralized validation approach 
so that all connection creation paths behave consistently and future entry 
points automatically inherit the same validation rules.
   


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