NFS uses port 2049. NFSv3 and NFSv2 use the portmapper service on TCP or UDP port 111. The portmapper service is consulted to get the port numbers for services used with NFSv3 or NFSv2 protocols such as mountd, statd, and nlm.
Does NFS use TCP or UDP?
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.
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 “
Which NFS version does support TCP and UDP protocol?
NFS version 2 uses the User Datagram Protocol (UDP) to provide a stateless network connection between the client and server. NFS version 3 can use UDP or TCP running over an IP.
Is portmap required for NFS client?
NFS relies upon remote procedure calls (RPC) to function. portmap is required to map RPC requests to the correct services. … Because RPC-based services rely on portmap to make all connections with incoming client requests, portmap must be available before any of these services start.
Is NFS a file system?
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 still used?
The most common NFS in use today, NFSv3, is 18 years old — and it’s still widely used the world over. … Sure, there are still millions of Unix boxes using NFS, but now there are also millions of virtualized Windows servers that are running from NFS storage through the hypervisor.
Is port 2049 UDP or TCP?
Port 2049 Details
What is TCP and UDP?
TCP is a connection-oriented protocol. Connection-orientation means that the communicating devices should establish a connection before transmitting data and should close the connection after transmitting the data. UDP is the Datagram oriented protocol. … It is because it provides flow control and acknowledgment of data.
Does NFSv4 use UDP?
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. There are three ways to configure an NFS file system export.
Is NFS or SMB faster?
If you have similar needs as I do (Windows machines) you might be surprised to find out that Samba is 20% faster than NFS.
What is NFS vs SMB?
NFS vs. SMB. Server Messaging protocol (SMB) is the native file sharing protocol implemented in Windows systems. … The Network File System (NFS) protocol is used by Linux systems to share files and folders.
What OSI layer is NFS?
NFS Procedures and Operations: The actual functionality of NFS is implemented in the form of procedures and operations that conceptually function at layer seven of the OSI model.
Why do we need NFS?
A significant advantage of NFS is that it allows for central management, decreasing the need for added software and disk space on individual user systems. NFS is user-friendly, allowing users to access files on remote hosts in the same way they access local files.
What is an NFS export?
Exporting a directory is done on the NFS server. Exporting a directory declares that a directory in the server’s namespace is available to client machines. NFS directory mounts. An NFS client can mount a directory that has been exported by an NFS server.
What is NFS Lock service?
The Network File System (NFS) is a client/server protocol that allows a directory hierarchy located on an NFS server to be mounted on one or more NFS clients. … The nfslock daemon provides the ability to lock regions of NFS files. It is run only on an NFS server; NFS clients do not need to run this service.