Kernel kompiles can be done on a different host, provided the same
architecture and distribution.
Just copy the config file and follow compile-kernel.sh

OpenDPI needs to be built on-box and needs 
configured and prepared kernel sources, though, so:

# tar xvf linux-source-2.6.32.tar.gz
# cd linux-source-2.6.32
# cp /boot/config-2.6.32-brigaden-net6501 .config
# make oldconfig && make prepare

before you build the OpenDPI wrapper