This was under a small panel. Don't know what it is, or what it's used for.
If this is somewhat new construction, these might be anti-pest defense tubes. The exterior box resembles "Tubes in the Wall" pest defense system. Liquid pesticide is shot via CO2 at the exterior junction box and the liquid will travel throughout the house by means of the tubes.
http://www.pestdefense.com/taexx is an example of this sort of system.
It looks like a box for a NID (network interface device) that a telco would install with 6 weather tight connections installed. Sometimes the bottom screw hole will be fitted with an anti-tamper device to prevent you from getting into it.
It was probably used to terminate the last mile leg of telephone/cable on the outside of your house, and then often there is an interconnect to connect it into the household wiring (something they can disconnect easily to verify their connection is OK).
Looks like its a distribution box for cable. as can be seen the six cores have already been used. Are there any wires running inside any of them?
a similar box can be seen on this link