Samba: Difference between revisions
(Created page with "== SMB (Samba) == SMB - "Server Message Block" - is a file sharing protocol that was invented by IBM and has been around since the mid-eighties. SMB is a protocol meaning an agreed upon way of communicating between systems. The SMB protocol was designed to allow computers to read and write files to a remote host over a local area network (LAN). == CIFS == CIFS - “Common Internet File System.”- is a ''particular implementation'' of the Server Message Block prot...") |
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SMB - "Server Message Block" - is a file sharing protocol that was invented by IBM and has been around since the mid-eighties. | SMB - "Server Message Block" - is a file sharing protocol that was invented by IBM and has been around since the mid-eighties. | ||
SMB is a protocol meaning an agreed upon way of communicating between systems. | SMB is a protocol meaning an agreed upon way of communicating between systems over a local area network (LAN).<ref>https://en.wikipedia.org/wiki/Server_Message_Block</ref> | ||
Most modern storage systems no longer use CIFS, they use SMB 2 or SMB 3 and [[NFS|NFS “Network File System”]] | |||
== SMB vs CIFS == | |||
== CIFS == | CIFS - “Common Internet File System.”- is a ''particular implementation'' of the Server Message Block protocol by Microsoft. someone said '''CIFS is a dialect of SMB. cause''' SMB version 1 is often associated with CIFS. This is because CIFS is a popular 1996 Microsoft SMB dialect that implemented SMB on many networks. | ||
CIFS - “Common Internet File System.”- is a ''particular implementation'' of the Server Message Block protocol by Microsoft. someone said '''CIFS is a dialect of SMB.''' | |||
Because CIFS is a form of SMB, a client speaking CIFS can talk to a server speaking SMB and vice versa. While they are the same top level protocol, there are still differences in implementation and performance tuning | Because CIFS is a form of SMB, a client speaking CIFS can talk to a server speaking SMB and vice versa. While they are the same top level protocol, there are still differences in implementation and performance tuning | ||
== | == SMB Protocol == | ||
SMB works at Layer 7 and the packets are in three types session control packets, file access packets and general message packets. The application layer, and uses TCP/IP on port 445 (note: prior to Windows 2000 the SMB port number was 139). | |||
== SMB Version == | |||
{| class="wikitable" | |||
|+ | |||
!Version | |||
!Description | |||
!Limitation | |||
|- | |||
|SMB1 | |||
|SMBv1 is the original implementation of SMB. It was created at IBM in the 1980s. | |||
| | |||
* SMB1 used 16-bit packet and small. by today’s standards data buffers is limited in performance. | |||
* SMBv1 does not have any encryption, which makes it so unsecured. Therefore it shouldn’t be used today. | |||
* The protocol is highly susceptible to MITM (man-in-the-middle) attacks | |||
* SMBv1 is the protocol exploited by ransomware like WannaCry and NotPetya. | |||
* SMB1 is inefficient and creates a lot of network “chatter” when compared to newer SMB versions | |||
|- | |||
|SMB2 | |||
|SMB 2.0 was released by Microsoft in 2006 with Windows Vista | |||
SMB 2.1 was released by Microsoft in 2008 with Windows Server 2008 R2 and Windows 7 | |||
| | |||
|- | |||
|SMB3 | |||
|SMB 3.0 adds more performance and security enhancements to the protocol such as SMB multichannel and end-to-end encryption. | |||
SMB 3.1.1 — the latest version of SMB — was released along with Windows Server 2016 and Windows 10 to include security enhancements such as: enforcing secure connections with newer (SMB2 and later) clients and stronger encryption (AES-256 from Windows 11 and Windows Server 2022). | |||
| | |||
|} | |||
[https://visualitynq.com/resources/articles/smb-most-important-features/ This page] provides detailed SMB features. | |||
== References == | == References == | ||
<references /> | <references /> | ||
Latest revision as of 13:48, 16 October 2023
SMB (Samba)
SMB - "Server Message Block" - is a file sharing protocol that was invented by IBM and has been around since the mid-eighties.
SMB is a protocol meaning an agreed upon way of communicating between systems over a local area network (LAN).[1]
Most modern storage systems no longer use CIFS, they use SMB 2 or SMB 3 and NFS “Network File System”
SMB vs CIFS
CIFS - “Common Internet File System.”- is a particular implementation of the Server Message Block protocol by Microsoft. someone said CIFS is a dialect of SMB. cause SMB version 1 is often associated with CIFS. This is because CIFS is a popular 1996 Microsoft SMB dialect that implemented SMB on many networks.
Because CIFS is a form of SMB, a client speaking CIFS can talk to a server speaking SMB and vice versa. While they are the same top level protocol, there are still differences in implementation and performance tuning
SMB Protocol
SMB works at Layer 7 and the packets are in three types session control packets, file access packets and general message packets. The application layer, and uses TCP/IP on port 445 (note: prior to Windows 2000 the SMB port number was 139).
SMB Version
| Version | Description | Limitation |
|---|---|---|
| SMB1 | SMBv1 is the original implementation of SMB. It was created at IBM in the 1980s. |
|
| SMB2 | SMB 2.0 was released by Microsoft in 2006 with Windows Vista
SMB 2.1 was released by Microsoft in 2008 with Windows Server 2008 R2 and Windows 7 |
|
| SMB3 | SMB 3.0 adds more performance and security enhancements to the protocol such as SMB multichannel and end-to-end encryption.
SMB 3.1.1 — the latest version of SMB — was released along with Windows Server 2016 and Windows 10 to include security enhancements such as: enforcing secure connections with newer (SMB2 and later) clients and stronger encryption (AES-256 from Windows 11 and Windows Server 2022). |
This page provides detailed SMB features.