Hi,

already done. It was not a question about how to use nfs. the shared folder is already mounted on other hosts.
Anyway the error message for the above command is:

mount: wrong fs type, bad option, bad superblock on 10.150.0.6:/firewall,
missing codepage or helper program, or other error
(for several filesystems (e.g. nfs, cifs) you might
need a /sbin/mount.<type> helper program)

In some cases useful info is found in syslog - try
dmesg | tail or so.

And mount.nfs is not there (and in any package)

Thanks,
a.