Power steering gear box leaks (pictures)

Hi. I’ve been slowly repairing leaks on my Dart.

I used the paper towel trick and wrapped all hoses to see where my leak is coming from. All was dry but I found a major leak and took some pictures of the location. It seems the leak is from the upper portion of power steering box where the steering shaft connects.

Would someone be able to tell me the automotive technical term for this so I can begin planning my repairs. It is leaking really bad. Pretty much squirting out. From my research it seems like a major repair.

Thank you.