How to test TCP port access to a Domain Controller from a Linux server

Hello,

We need to test if a specific TCP port is open to a Domain Controller from a Linux box, however we don't have the ability to logon to the Linux box.  In other words, while on a Domain Controller, we would like to test if a specific TCP port is open to the DC from a Linux box even though we cant logon to the Linux box.

Any suggestions on how to do this?

Thanks for your help! SdeDot