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IT Atlas

Protocol

SMB

Windows file and printer sharing

Port 445TCPEncrypted: Optional

Record

Ports
445
Transport
TCP
Encryption
Optional
Typical use
File shares, Group Policy delivery, application installs

Security considerations

Disable SMBv1, require signing, block at the perimeter

Where this protocol is explained

SMB

Server Message Block is the Windows file and printer sharing protocol, operating over TCP/445 in modern deployments.

Topics that use this protocol

Active Directory

Microsoft's on premises directory service, providing authentication, authorisation, policy and object management for Windows environments.

SMB

Server Message Block is the Windows file and printer sharing protocol, operating over TCP/445 in modern deployments.

Other protocols over TCP

DNS over TLSFTPFTPSGlobal CatalogHTTPIMAP / IMAPSKubernetes APILDAPSMicrosoft SQL ServerMySQL / MariaDB

In the knowledge graph

Open the interactive map centred on this entity to see everything it connects to and travel outwards from there.

Explore SMB in the knowledge graph