http://www.qnx.com/news/pr/may18_98-cisco.html
Chris Kirschke Lead Engineer Astreya Partners, Inc [EMAIL PROTECTED] 408-790-5900 xt 531 -----Original Message----- From: Clifford Thurber [mailto:[EMAIL PROTECTED]] Sent: Thursday, April 18, 2002 9:36 AM To: Brian Ford; Noonan Wesley; 'Mikael Olsson' Cc: [EMAIL PROTECTED] Subject: Re: Digital Legends (was: RE: Microsoft ISA server (Was: Re: Replacingmy old PIX Classic)) I don't have the link in front of me but I saw a news blurb that Cisco licensced QNX in 1998? At 12:27 PM 4/18/2002 -0400, Brian Ford wrote: >Wes, > >I don't know where you heard this legend about IOS running on some other >OS.... It is not true. > >IOS is an operating system implemented directly on a hardware >platform. There is no underlying operating system. Look at your IOS >router for a "Boot Loader"; that's a small IOS kernel (and not a third >party OS). > >PIX OS ran many, many, many years ago on top of a real time OS (Finesse) >that was developed specifically for the hardware platform that the PIX >used at that time. Today, the PIX OS runs directly on hardware (when you >look at the actual PIX source code you sometimes see references to the old >real time OS). > >You may be thinking of one of a number attempts (by third parties) to >create a program that runs on Unix that can execute an IOS or PIX >image. The latest attempt at something like that was the "IOU" (IOS On >Unix) project. I don't know how far that ever got. > >This claim that either IOS or PIX is a version of Unix or running on Unix >is becoming a kind of annual event. Maybe someone will claim that all >Linux implementations actually runs on one copy of run-time Windows NT >v4.0 next? > >Liberty for All, > >Brian > >At 08:15 AM 4/18/2002 -0700, [EMAIL PROTECTED] wrote: >>Message: 6 >>From: "Noonan, Wesley" <[EMAIL PROTECTED]> >>To: "'Clifford Thurber'" <[EMAIL PROTECTED]>, >> "'Mikael Olsson'" <[EMAIL PROTECTED]> >>Cc: "'[EMAIL PROTECTED]'" <[EMAIL PROTECTED]> >>Subject: RE: Microsoft ISA server (Was: Re: Replacing my old PIX Classic) >>Date: Wed, 17 Apr 2002 09:12:38 -0500 >> >>A sizable chuck of Cisco (don't know for sure on the PIX, but I know on >>their routers) runs an OS behind the scenes that is called Xenix, XNS, ZNS, >>or something along those lines (I really don't recall the actual name). IOS >>runs on top of that (is my understanding, kind of like how Banyan ran on top >>of Unix). My point was simply, if one is going to cast the "a firewall is >>only as strong as the underlying OS" stone, they need to be prepared to cast >>that stone at virtually every firewall out there. It is hardly a ISA >>specific issue (heck, FW1 runs on MS doesn't it?). >> >>Wes Noonan >>[EMAIL PROTECTED] >>281-208-8993 > _______________________________________________ Firewalls mailing list [EMAIL PROTECTED] http://lists.gnac.net/mailman/listinfo/firewalls _______________________________________________ Firewalls mailing list [EMAIL PROTECTED] http://lists.gnac.net/mailman/listinfo/firewalls
