The server is A NetBSD 1.5 with a recent ( 1 month) 1.5.1 Alpha kernel
w/ the recents bug/security fixes (ftpd, libc...).

The Linux client that "damages" the server's rpc capability, is a
Linux Slackware 7.0 w/ 2.2.13 Kernel (nfs loaded as module)...

I'm not surprised to see buggy Linux code, but i'm surprised to notice
that it
hangs a NetBSD rpc capabilities... (there might be a DOS attack risk).


Chris Pinnock wrote:
> 
> On Wed, May 09, 2001 at 09:11:56PM +0000, Samuel Lellouche wrote:
> > But On the other hand i have a Linux Slackware that can't mount the
> > exported volumes,
> > and can't "showmount" the server.
>   [...]
> > The strangest thing is that as soon as this machine tries a showmount or
> > a mount,
> > None of my other boxes (NetBSD, linux) can mount/umount or showmount the
> > server, until I kill -HUP the mountd and the rpcbind...
> 
> It is possible that you are running a Linux kernel with buggy NFS code.
> Several NFS patches that some Linux vendors were including with their
> pre-2.2.18 distributions didn't go into Linus-approved Linux kernel until
> 2.2.18. Slackware tend to stick with Linus-approved kernel. It is possible
> that the client is causing the problem. However, the server ought to be
> able to cope with this.
> 
> Can you send the version details of the O.S.'s involved to the list?
> 
> cheers,
> --
> Chris

-- 
Samuel Lellouche - Omatis
Expert Systèmes, réseaux et securité
E-mail: sam@omatis.com
Tel: 01 53 14 59 14 / 01 53 14 59 31