NSA able to compromise Cisco, Juniper, Huawei switches

[randy at psg.com (Randy Bush)]

>> So this isn't an issue of the NSA working with Cisco and Juniper to
>> include back doors, it's an issue of the NSA modifying those releases
>> after the fact though BIOS implants.
> 
> Yes, I see this now, thanks.
> 
> AFAICT, the Cisco boxes listed are ASAs and PIXes, which are
> essentially Linux PCs running a bunch of userland firewall stuff and
> which have BIOSes and so forth; they aren't routers/switches.

you may want to read the more complete, well let's say extensive 

http://leaksource.wordpress.com/2013/12/30/nsas-ant-division-catalog-of-exploits-for-nearly-every-major-software-hardware-firmware/