The name for both the Cisco FireWall appliance/solution and the OperatingSystem that runs on it.
Note, PIX units do not run IOS.
These units natively support lots of security related stuff like MicrosoftCorporation's PPTP and the open IPSec standard. If you want to learn about interoperating a PIX and Linux, see FreeSwanToCiscoPix (FreeSwan is the Linux 2.4 IPSec implementation, it's due to become native in LinuxKernel2.6.
3 pages link to CiscoPix:
