Rumor has it that Harry Potter will soon be loaning his invisibility cloak to bots. No, that is a feeble attempt at humor, so I’ll stop. Actually, experts expect that it won’t be long before botnets are using encryption technologies to hide themselves from network scanners.
Encryption won’t completely hide activity – it’ll just mask it. Your time capturing packets in Ethereal (if you can get it installed) will just produce more mumbo jumbo for you to sort through and figure out. In other words, you may see some traffic crossing a port, but you won’t know what it is right off hand. Thanks, Harry.