Do Pipelines have outbound port restrictions?

[leafspider]

I'm using Spring Integration to exchange files with an FTP server. Uploads and downloads work locally, in test and install, however when pushing to Bitbucket the Pipeline upload test fails with a "500 Illegal PORT command" error. 

Is there a (firewall?) restriction which prevents code running in the Pipeline sending files to an external FTP server?

[StannousBaratheon]

Hi @leafspider

Pipelines doesn't restrict specific ports. Some ports are reserved when in use by services running to support your build such as port 2375 for the docker daemon but the default FTP port of 21 is not one of them. Are you running your FTP server on the default port?