Quick Answer: What Is SMB Exploit?

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…

How do you do an SMB transfer?

Transfer Files Using Microsoft File SharingClick Start, and then click My Network Places.Double click the server you set up in the previous procedure.When prompted, enter your user name for this server, and then in the Password box, enter your password for this server. Click OK. A window displaying the server folder you connected to opens.

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.

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 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…•

What is SMB communication?

In computer networking, Server Message Block (SMB), one version of which was also known as Common Internet File System (CIFS /sɪfs/), is a communication protocol for providing shared access to files, printers, and serial ports between nodes on a network.

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. …

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.

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.

How does EternalBlue exploit work?

The EternalBlue exploit works by taking advantage of SMBv1 vulnerabilities present in older versions of Microsoft operating systems. … EternalBlue exploits SMBv1 vulnerabilities to insert malicious data packets and spread malware over the network.

Is SMB and Samba the same?

Samba is a free software re-implementation of the SMB networking protocol, and was originally developed by Andrew Tridgell. … The name Samba comes from SMB (Server Message Block), the name of the standard protocol used by the Microsoft Windows network file system.

How did WannaCry exploit SMB?

When executed, the WannaCry malware first checks the “kill switch” domain name; if it is not found, then the ransomware encrypts the computer’s data, then attempts to exploit the SMB vulnerability to spread out to random computers on the Internet, and “laterally” to computers on the same network.

Why is SMB so vulnerable?

This vulnerability is due to an error in handling maliciously crafted compressed data packets within version 3.1. 1 of Server Message Blocks. … Microsoft Server Message Block (SMB) is a network file sharing protocol that allows users or applications to request files and services over the network.

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.

What happens if SMB is disabled?

Disabling SMBv1 without thoroughly testing for SMBv1 traffic in your environment can have unintended consequences, up to and including a complete suspension of all network services, denied access to all resources, and remote authentication failures (like LDAP).

What does SMB mean in text?

Suck My BallsSo now you know – SMB means “Suck My Balls” – don’t thank us. YW! What does SMB mean? SMB is an acronym, abbreviation or slang word that is explained above where the SMB definition is given.

What is port 445 commonly used for?

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.

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.