AS225 is the original TCP/IP stack. I think it is an early version of AmiTCP which uses socket.library rather than bsdsocket.library (you can emulate socket.library functionality on current TCP/IP stacks). IIRC AS225 was bundled with the AT Surfer A1200 packs.
I didn't know Novell Client was available either.. pretty interesting, and probably works a hell of a lot better than trying to network to Windows with Samba/smbfs.
Chris