RHEL4 is using unprivileged ports when requesting an nfs mount some of the time. NFS-mounting accross a NAT router. Re: nfs mount needs to be "insecure" to work as user. This is useful for hosts that run multiple NFS servers. This tutorial, I will discuss the different NFS mount options you have to perform on nfs client. /mnt/DroboFS/Shares 192.168.1.150(rw,insecure) and then, on the NFS server, run: $ sudo exportfs -a Now when you mount the directory as a non-root user on the NFS client it will mount with the appropriate owner and group. The main purpose of this protocol is sharing file/file systems over the network between two UNIX/Linux machines. This option is not supported with NFSv4 and should not be used. Most/normal nfs servers are firewalled; opening port 2049 for nfs … Vivek — there is a problem accessing a “normal” nfs server from osx if the mount option “-o resvport” is used on the osx client. Securing NFS Mount Options. If no version is specified, NFS uses the highest supported version by the kernel and mount command. Comment 5 Joe Pruett 2005-08-12 21:13:32 UTC ... e.g. – Caution: Using the -O mount option can put your system in a confusing state. Verify if the NFS FS is mounted properly NFS is a client and server architecture based protocol, developed by Sun Microsystems. In order to allow a regular user to mount NFS share, you can do the following. server2 (10.43.138.2) We need the mount point, so I will create the mount point [root@server2 ~]# mkdir /tmp/logs. On the NFS client host (e.g., 10.1.1.20), update /etc/fstab as … The info on the wiki page appears to outdated, check the manpages for nfs and nfs.conf . The -O option allows you to hide local data under an NFS mount point without receiving any warning. (insecure is the export option). Checking wiki and manpages indicate that you can assign port numbers on the server. intr — Allows NFS requests to be interrupted if the server goes down or cannot be reached.. nfsvers=2 or nfsvers=3 — Specifies which version of the NFS protocol to use. To reject all NFS requests from nonreserved ports, you can enable the nfs.nfs_rootonly option. You need to allow the client to access the server on the NFS port from (source port on the client) any port <=1024 to use NFS secure mount. A good reading about NFS security can be found here: Local data hidden beneath an NFS mount point will not be backed up during regular system backups. – On HP-UX, the -O option is valid only for NFS-mounted file systems. ... Linux clients may do this using the “ noresvport ” mount option. About this task By default, the option nfs.mount_rootonly is on . If you want to allow this on an export, you may do so with the “ insecure ” export option. 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