Hi,
well You could use rsync, rcp, netcat, wget/wput (with something other than ftp, http for example), uucp and I guess quite a lot of others to choose from. It all depends on what protocols are supported on both Your computers.
If You have specific reasons for not allowing some protocols, I guess You can easily determine if any of the others are a viable option for You.
Best regards,
Lakris
PS A last resort could of course be a USB drive or similar external device?