In my organization we have a pix515e. We want to buy a failover pix, but now they recommend us to put away our pix and buy an ASA.
Can you tell me what are the differences between ASA and PIX.
Is the configuration a bit the same on both platforms? With my knowledge of pix, can I configure an ASA too?
There are several changes in the ASA CLI that you should be aware (but not afraid) of. The interface configuration is more IOS like now. Also, vpn's are configured a little differently using the concept of groups. I know PIX 7.x will accept old style vpn commands and automagically convert them, but I don't know if the ASA has this logic. Also, the 7.x no longer supports conduits in either PIX or ASA.
The fixup commands have been deprecated in the 7.x OS, in favor of inspection maps (again, more IOS like syntax).
These examples scratch the surface of the differences, but are most likely the ones you will first encounter.
In short though, if you know PIX 6.x (or 7.x), the ASA should be easy to pickup.