As far as I'm able to tell from the installation and configuration manual, no, for most software versions.
Version 6.6 has a lot more network connectivity than 6.2 - 6.5, but I don't have a full list of what you can get away with. I know you can telnet into it, and it has a few web-based tools, and you can administer over the LAN with LC-Win, but I don't have more data than that. If you don't have 6.6 then it's highly probable the answer is no, and with 6.6 it's the low side of "maybe".
I know that wasn't very helpful, but I looked through all the docs I had and didn't find any mention of it.