Doesn't Cisco still use open source firmware ? How hard would it be for a programmer to have a look at the code ?
Something smells fishy about this one.
I don't think Cisco uses open-source firmware much anymore. This is why certain routers are still very popular amongst enthusiasts (like the WRT54GL) because they are one of the few models that still run on Linux. Most of the others run on the closed-source VxWorks OS.