What are SMB ports?
SMB is a network file sharing protocol that requires an open port on a computer or server to communicate with other systems. SMB ports are generally port numbers 139 and 445. Port 139 is used by SMB dialects that communicate over NetBIOS.
Is SMB CIFS TCP or UDP?
CIFS protocols and firewall ports
| Port | Protocol | Purpose |
|---|---|---|
| 53 | TCP, UDP | DNS |
| 88 | TCP, UDP | Kerberos |
| 139 | TCP | DFSN, NetBIOS Session Service, NetLog |
| 445 | TCP, UDP | SMB, CIFS, SMB2, DFSN, LSARPC, NbtSS, NetLogonR, SamR, SrvSvc |
How do I find my SMB port?
To identify ports and network interfaces your Samba domain member is listening on, run: # netstat -tulpn | egrep “smbd|nmbd|winbind” tcp 0 0 127.0.
What is CIFS port?
Common Internet File Service (CIFS) is the successor to the server message block (SMB) protocol. CIFS is the primary protocol used by Windows systems for file sharing. CIFS uses UDP ports 137 and 138, and TCP ports 139 and 445. Your storage system sends and receives data on these ports while providing CIFS service.
What is port 161 UDP?
161. udp. SNMP. Simple network management protocol (SNMP). Used by various devices and applications (including firewalls and routers) to communicate logging and management information with remote monitoring applications.
How do I enable SMB protocol?
Under Control Panel Home, select Turn Windows features on or off to open the Windows Features box. In the Windows Features box, scroll down the list, clear the check box for SMB 1.0/CIFS File Sharing Support and select OK. After Windows applies the change, on the confirmation page, select Restart now.
What SMB protocol does Windows 10 use?
SMB or Server Message Block Protocols are used to connect your computer to an external server. Windows 10 ships with support of these protocols but they are disabled in the OOBE. Currently, Windows 11/10 supports SMBv1, SMBv2, and SMBv3 as well.
What is SMB and CIFS protocol?
Thank you. The Server Message Block (SMB) Protocol is a network file sharing protocol, and as implemented in Microsoft Windows is known as Microsoft SMB Protocol. The set of message packets that defines a particular version of the protocol is called a dialect. The Common Internet File System (CIFS) Protocol is a dialect of SMB.
What ports does CIFS use?
Common Internet File Service (CIFS) is the successor to the server message block (SMB) protocol. CIFS is the primary protocol used by Windows systems for file sharing. CIFS uses UDP ports 137 and 138, and TCP ports 139 and 445.
What ports are used for SMB file sharing?
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.
What is SMB protocol?
Thank you. The Server Message Block (SMB) Protocol is a network file sharing protocol, and as implemented in Microsoft Windows is known as Microsoft SMB Protocol. The set of message packets that defines a particular version of the protocol is called a dialect.