Network File System (NFS) is used by UNIX clients for file access. NFS uses port 2049. The portmapper service is consulted to get the port numbers for services used with NFSv3 or NFSv2 protocols such as mountd, statd, and nlm. … NFSv4 does not require the portmapper service.
What is NFS used for in Linux?
Network File Sharing (NFS) is a protocol that allows you to share directories and files with other Linux clients over a network. … An NFS file share is mounted on a client machine, making it available just like folders the user created locally.
How do I allow TCP and UDP port 2049 for NFS?
To configure a firewall to allow NFS, perform the following steps:
- Allow TCP and UDP port 2049 for NFS.
- Allow TCP and UDP port 111 ( rpcbind / sunrpc ).
- Allow the TCP and UDP port specified with MOUNTD_PORT=” port “
- Allow the TCP and UDP port specified with STATD_PORT=” port “
Does NFS use UDP or TCP?
All versions of NFS can use Transmission Control Protocol (TCP) running over an IP network, with NFSv4 requiring it. NFSv2 and NFSv3 can use the User Datagram Protocol (UDP) running over an IP network to provide a stateless network connection between the client and server.
What ports does NFSv4 use?
NFSv4 runs on TCP port 2049. The NFS server must accept incoming connections on this port. Unlike previous versions of NFS, this is the only port that is required.
Is NFS or SMB faster?
Depending on your needs, the best thing to do would be to set up a Samba share and NFS share and run various real-world read/write/CPU tests across the network. If you have similar needs as I do (Windows machines) you might be surprised to find out that Samba is 20% faster than NFS.
Is NFS still used?
NFS’s usefulness as a distributed file system has carried it from the mainframe era right through to the virtualization era, with only a few changes made in that time. The most common NFS in use today, NFSv3, is 18 years old — and it’s still widely used the world over.
What ports do I need to open for NFS?
Port 111 (TCP and UDP) and 2049 (TCP and UDP) for the NFS server. There are also ports for Cluster and client status (Port 1110 TCP for the former, and 1110 UDP for the latter) as well as a port for the NFS lock manager (Port 4045 TCP and UDP).
Does port 445 need to be open?
Note that blocking TCP 445 will prevent file and printer sharing – if this is required for business, you may need to leave the port open on some internal firewalls. If file sharing is needed externally (for example, for home users), use a VPN to provide access to it.
Is NFS over TCP?
The default transport protocol for NFSv4 is TCP; however, the Red Hat Enterprise Linux 5 kernel includes support for NFS over UDP. To use NFS over UDP, include the -o udp option to mount when mounting the NFS-exported file system on the client system.
Why NFS is used?
NFS, or Network File System, was designed in 1984 by Sun Microsystems. This distributed file system protocol allows a user on a client computer to access files over a network in the same way they would access a local storage file. Because it is an open standard, anyone can implement the protocol.
Is NFS a file system?
What is Network File System (NFS) Network File System (NFS), was a protocol invented in the 80’s to facilitate remote file sharing between servers. There are multiple versions of NFS. NFS v3 is the most common.