I have a device that has some neat console features, but it requires a
serial connection.  I'd like to set up something so I can admin it from
boxen in various locations.  What I would do if I had the option is set up
a linux box with minicom and access it through SSH.  I want to find a
hardware component that would replace the need for the linux box.  I guess
what I'm thinking of would be similar to a print server or a DSL router, a
small box with an ethernet port and a serial port that just sits quietly
and requires no administration.  Ids there such a thing?

-Brian