The most recent version, the one used in operating systems such as Windows 10 or Windows Server 2016, is SMB 3.1.1. It is important to have this protocol updated correctly, since we have sometimes seen vulnerabilities that can be exploited. An example was the famous EternalBlue exploit which was used to distribute the WannaCry ransomware that caused so much damage a few years ago.
Following the thread of what we mentioned, Microsoft decided to remove support for the first version SMB 1.0. This could allow, for example, to carry out DDoS attacks on a computer.
What is the CIFS protocol?
After explaining what the SMB protocol is, let’s talk about CIFS. Basically we can say that it is a name change. IBM created SMB, but Microsoft quickly started using it. 15 years later, in 1998, Microsoft renamed the first version of Server Message Block to CIFS.
But of course, it was not only a name change. Logically added different features. For example they added support for symbolic links or hard links, larger file size.
CIFS stands for Common Internet File System. They are the acronyms of Common Internet File System. It is part of the SMB protocol and will allow multiple platforms to be remotely connected, such as Windows, Linux or macOS.
A good point about CIFS is that works universally. In other words, Windows for example usually uses the NTFS file system. For its part, macOS can use HFS. What it does is allow those files to be read and recognized. This will allow file and printer sharing between Windows and UNIX computers.
Therefore, we can say that CIFS is a particular implementation of SMB by Microsoft. However, today when a person talks about one or the other, we can basically say that they are talking about the same thing. Although there are differences in the implementation.
Today CIFS is very rarely used. Modern systems will use SMB 2 or SMB 3. Mainly the latter, since it is in the most recent versions since Windows 8. We can say that they are CIFS updates, which would correspond to the first version of SMB.
How Samba works
So, at this point we will ask ourselves what is samba. We have seen what SMB and CIFS consist of, but one more term remains to be seen. Samba is also an implementation of the SMB protocol, but in this case it is free.
This implementation was for UNIX-like systems. We can use it in Linux, macOS or Unix and in this way they act as clients in Windows networks. In this case, its initial release was in 1992, although it has had different versions over time.
We can say that, as in the case of CIFS, Samba implements the SMB protocol. This is what will allow Windows clients to access Linux directories, printers, and files on a Samba server.
Therefore, Samba is an open source implementation of SMB. It is one more way to interconnect Microsoft networks with Linux or macOS. We will be able to access files or share printers.
Conclusion of the differences between SMB, CIFS and Samba
So what are the differences between SMB, CIFS, and Samba? We can say that SMB it was the original protocol that emerged in the 1980s. It was created by IBM to be able to exchange files and access printers. Over time it has had different versions. It was mainly used in Windows and DOS.
SMB is an enhancement to CIFS. It spread from the beginning of the 90’s with the use of Windows 95. From that moment on, CIFS stopped being as widely used.
For his part CIFS it is how the original version of SMB was later known once Microsoft started using it on their systems. It had certain implementations to allow connecting multiple platforms, such as Windows or Linux. However CIFS is practically not used now. On the other hand, we can find the latest versions of SMB, such as SMB 2 or SMB 3.
Finally, Samba is the implementation of the above in open source. A free implementation to be able to use it on different systems such as Linux, macOS or Unix. In this case it was released in the early 1990s.
Ultimately, these are the main points to keep in mind when we come across the terms SMB, CIFS and Samba. As we can see, they are protocols and implementations that allow exchanging files or accessing printers. They have appeared at different times, although all three are ancient. The first version of SMB appeared in 1983, created by IBM, while Samba emerged in the 1990s. This means that, as we have seen, we must take security precautions and not have obsolete protocols enabled that can serve to hack hackers. exploit vulnerabilities and steal information or take control of your computer.