– Caution: Using the -O mount option can put your system in a confusing state. This option is not supported with NFSv4 and should not be used. This tutorial, I will discuss the different NFS mount options you have to perform on nfs client. 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. NFS is a client and server architecture based protocol, developed by Sun Microsystems. /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. Verify if the NFS FS is mounted properly About this task By default, the option nfs.mount_rootonly is on . So to mount NFS manually we will execute below command on the client i.e. This is useful for hosts that run multiple NFS servers. (insecure is the export option). A good reading about NFS security can be found here: This will ensure that no user without root privileges can forge NFS communications and access NFS ressources in a way not permitted. Most/normal nfs servers are firewalled; opening port 2049 for nfs … Next mount the NFS file system from server1 on server2 [root@server2 ~]# mount -t nfs 10.43.138.1:/ISS /tmp/logs. On the NFS client host (e.g., 10.1.1.20), update /etc/fstab as … NFS-mounting accross a NAT router. The -O option allows you to hide local data under an NFS mount point without receiving any warning. Securing NFS Mount Options. In order to allow a regular user to mount NFS share, you can do the following. Re: nfs mount needs to be "insecure" to work as user. RHEL4 is using unprivileged ports when requesting an nfs mount some of the time. Local data hidden beneath an NFS mount point will not be backed up during regular system backups. If you want to allow this on an export, you may do so with the “ insecure ” export option. The main purpose of this protocol is sharing file/file systems over the network between two UNIX/Linux machines. The info on the wiki page appears to outdated, check the manpages for nfs and nfs.conf . 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. Adapted from How to mount NFS share as a regular user - by Dan Nanni:. Comment 5 Joe Pruett 2005-08-12 21:13:32 UTC ... e.g. – On HP-UX, the -O option is valid only for NFS-mounted file systems. It is good practice not to allow users to login to a server. ... Linux clients may do this using the “ noresvport ” mount option. server2 (10.43.138.2) We need the mount point, so I will create the mount point [root@server2 ~]# mkdir /tmp/logs. 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