In playing with Windows 7 Beta and its built-in Client for NFS, I've noticed, for some reason, it using hundreds of TCP connections to the sunrpc and nfsd ports on my 4.4-stable box-and this usually happens shortly after making an NFS connection to the machine. Granted, I know this is Windows-and it is beta-but I found it interesting how a single Windows client is readily able to DoS the portmapper.
Any thoughts on identifying/addressing/working around the issue are appreciated.