How can I make a Knowledge Base visible in the back-end, but not visible from the front-end?

[Tilly Penn]

Appreciate your response.  What's the name of this table please? 

[Anurag Tripathi · Accepted solution]

sp_portal

Look for Service Portal >> Portal from application navigator.

[Anurag Tripathi]

Hi,

By front end do youmean portal?

if so then 

Look for Service Portal >> Portal from application navigator.

In the list layout add Knowledge base column. Look for the appropriate portal & remove knowledge base which is populated or change it as you need.

[RMiller19]

Can't you just use permissions so it is still available in portal view but only to internal users (or users you want to be able to see it?  We have a knowledgebase for our Service Desk team that is not visible to other users.

[Dave Littlejohn]

could use that to limit who sees it available on the portal but not restricting it entirely from showing up on the portal.

For what it's worth, I do prefer your recommendation as that is how we implemented it at our company.