As far as I know - no. so you will have to swallow that pill. Though, no offense, I think you are overstating your case. I certainly don't believe in the myth of the impenetrable Mac, but most vulnerabilities are not in the core, but rather Safari, iTunes etc.. As long as none of these are involved, opening a few HTTP ports for activation is a minor thing and "daily business". You could even restrict this so it really only connects to Adobe servers, so IMO it realyl is not a big deal.
Well, I just found out that I had no choice anyway. When I fired it up, the computer automatically found my wi-fi router by itself! I thought I'd have to go through all the usual fol-de-rol to get a connection, the way I had to do on my PCs.
And the activation is done, so now I no longer need the connection, so I can disable it now. So, I spoke too soon...
Thanks for your reply, Mylenium.
Rick, I think that only applies to versions prior to CS5. I had a chat with an Adobe rep, who told me that you could activate by phone only up to version CS3. With CS5, that option isn't available any more.
Anyway, it was a storm in a teacup, really, because although my computer automatically detected my home network and connected to it, the activation process was done pretty much immediately. I guess I was only on the Net for less than a minute, (it's impossible to know for sure, because it's done silently). But I was able to disconnect afterwards and I very much doubt any harm was caused in that time.
So, all good.
Thanks for your tip, anyway.