MBP and Mini don't see each other on net

[Beachguy]

Hardware: MBP 15.4 April, 2010 model and Mac Mini base model July 2011.

For a while I was able, through Bonjour, to share files easily and map a "drive" to the other machine, either way.

About a month ago I noticed the Mini stopped showing up for the MBP, and the MBP was not seen by the Mini. I don't recall changing anything at the time, but I easily could have and simply do not recall it.

Any suggestions on places to look to troubleshoot?

Thanks...

 

[simsaladimbamba]

System Preferences > Sharing > File Sharing is a good place to start.
With "net" do you mean NETwork or interNET?

 

[Beachguy]

Network- at home.

 

[simsaladimbamba]

Network- at home.

Then File Sharing is the way to look for.