Question: What Is SMB Port Used For?

Is NFS better than SMB?

NFS (version 3) will give higher performance and is quite easy to set up.

The main problem is the complete lack of decent security.

NFS (version 4) gives security but is almost impossible to set up.

Samba will probably be a bit slower but is easy to use, and will work with windows clients as well…

What is SMB attack?

SMB attacks are the best known remote code execution attacks for Windows systems, and because it is a remote code attack, the hackers can be anywhere. They just need to gain a foothold in a system from the vulnerabilities, exploit that, run commands on the system, place malware, and the attack is underway.

Does NFS use SMB?

The acronym NFS means “Network File System.” The NFS protocol was developed by Sun Microsystems and serves essentially the same purpose as SMB (i.e., to access files systems over a network as if they were local), but is entirely incompatible with CIFS/SMB.

Which is faster CIFS or NFS?

In terms of security, CIFS provides better network security than NFS….Comparison Table of CIFS vs NFS.Behavioral AttributesCIFSNFSSpeedThe communication speed of CIFS is moderate than NFS.NFS offers a high communication speed.12 more rows

What is the default SMB port?

SMB uses either IP port 139 or 445. Port 139: SMB originally ran on top of NetBIOS using port 139. NetBIOS is an older transport layer that allows Windows computers to talk to each other on the same network. Port 445: Later versions of SMB (after Windows 2000) began to use port 445 on top of a TCP stack.

Why is smb1 bad?

SMB1 is just old and is not as secure as the latest versions of the SMB protocol. You should be putting a plan in place to remove older devices that still rely on SMB1 (like old photocopiers). This may be easier said than done in some environments. The Wannacry virus was particularly nasty and well advertised.

What is SMB protocol used for?

The Server Message Block (SMB) protocol is a network file sharing protocol that allows applications on a computer to read and write to files and to request services from server programs in a computer network. The SMB protocol can be used on top of its TCP/IP protocol or other network protocols.

Does SMB use TCP or UDP?

The SMB protocol relies on lower-level protocols for transport. The Microsoft SMB protocol was often used with NetBIOS over TCP/IP (NBT) over UDP, using port numbers 137 and 138, and TCP port numbers 137 and 139.

How do I test my SMB port?

If we want to check the ports 137,138,139 and 445 whether they are open we can use netstat command. This list open ports with TCP and UDP protocols. As we can see from the example the TCP 445 is open and listening mode which means this system will accept connections to the 445 port.

Is SMB still used?

Windows SMB is a protocol used by PCs for file and printer sharing, as well as for access to remote services. A patch was released by Microsoft for SMB vulnerabilities in March 2017, but many organizations and home users have still not applied it.

What is the use of port 445?

TCP port 445 is used for direct TCP/IP MS Networking access without the need for a NetBIOS layer. This service is only implemented in the more recent verions Windows starting with Windows 2000 and Windows XP. The SMB (Server Message Block) protocol is used among other things for file sharing in Windows NT/2K/XP.

Is SMB secure?

An information worker’s sensitive data is moved by using the SMB protocol. SMB Encryption offers an end-to-end privacy and integrity assurance between the file server and the client, regardless of the networks traversed, such as wide area network (WAN) connections that are maintained by non-Microsoft providers.

What does SMB mean?

Server Message BlockStands for “Server Message Block.” SMB is a network protocol used by Windows-based computers that allows systems within the same network to share files.

Is SMB port 445 secure?

blocking all versions of SMB at the network boundary by blocking TCP port 445 with related protocols on UDP ports 137-138 and TCP port 139, for all boundary devices. …

Why is port 139 open?

I did some research and found out it is a Netbios-ssn port used for sharing files. … If you are on Windows-based network that is running NetBios, it is perfectly normal to have port 139 open in order to facilitate that protocol. If you are not on a network using NetBios, there is no reason to have that port open.