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Yes. 5.1.5 is the latest code you can run on a 2 MB flash card. Flash=AT29C040A indicates a 2 MB flash card. You may want to upgrade incrementally, depending on what version of 4 code you have. (such as 4.2>4.4>5.1). I'm curious why you want to go ...
Virus(es) on an inside or dmz host can peg the cpu of the pix. You can try putting an acl on the inside (and/or dmz) interface, and deny some of the commonly attacked ports.http://www.cisco.com/warp/public/707/advisory.htmlhttp://www.cisco.com/warp/p...