Quick Answer: What Is SMB Attack?

Is NFS better than SMB?

For me the NFS connection works two times faster than the SMB connection.

Especially if you have to deal with 100 GByte of photos and music files in 1000 directories you will love the speed of NFS.

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

What SMB protocol am I using?

If you wish to check what version of SMB you are running, you can just type in the following in the cmdlet for PowerShell:SMB v1 Windows 10 and Windows 8.1 Get-WindowsOptionalFeature –Online –FeatureName SMB1Protocol.SMB v2 Windows 10 and Windows 8.1 Get-SmbServerConfiguration | Select EnableSMB2Protocol.More items…•

How do I tell if SMB protocol is enabled?

How to Determine Enabled SMB VersionsRight click on the Windows start logo and select Windows PowerShell (Admin). … Run one of the following commands in PowerShell: Get-SmbServerConfiguration | Select EnableSMB1Protocol.

What SMB version does Windows 10 use?

The version of SMB used between two computers will be the highest dialect supported by both. This means if a Windows 8 machine is talking to a Windows 8 or Windows Server 2012 machine, it will use SMB 3.0. If a Windows 10 machine is talking to Windows Server 2008 R2, then the highest common level is SMB 2.1.

Should I disable SMB?

If you’re not using any of these applications—and you probably aren’t—you should disable SMBv1 on your Windows PC to help protect it from any future attacks on the vulnerable SMBv1 protocol. Even Microsoft recommends disabling this protocol unless you need it.

Is SMB port 445 secure?

Here are some other ways you can secure port 139 and 445. Avoid exposing SMB ports: Ports 135-139 and 445 are not safe to publicly expose and have not been for a decade. Patch everything: Keep your systems up-to-date to avoid exploits of known vulnerabilities.

What is SMB 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.

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.

Is SMB v2 secure?

SMB1 is certainly fraught with security issues and should be discouraged. SMB2 is still fine and if disabled may cause some scanners to stop scan to folder and other options (and other devices might stop working as well as most have only just stopped using SMB1).

What port does SMB use?

SMB has always been a network file sharing protocol. As such, SMB requires network ports on a computer or server to enable communication to other systems. SMB uses either IP port 139 or 445.

Why is SMB so vulnerable?

A vulnerability has been discovered in Microsoft Windows SMB Server that could allow for remote code execution. This vulnerability is due to an error in handling maliciously crafted compressed data packets within version 3.1. … An exploited SMB server could then be leveraged to exploit SMB clients.

What is SMB directly over IP?

Windows supports file and printer sharing traffic by using the Server Message Block (SMB) protocol directly hosted on TCP. This differs from earlier operating systems, in which SMB traffic requires the NetBIOS over TCP (NBT) protocol to work on a TCP/IP transport. … Simplifying the transport of SMB traffic.