What ports are used for Windows file and printer sharing?

What ports are used for Windows file sharing?

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 port is file sharing?

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.

What port does Windows file Explorer use?

For this they use TCP port 445. ”

What is port 445 used for in Windows?

Port 445 is a traditional Microsoft networking port with tie-ins to the original NetBIOS service found in earlier versions of Windows OSes. Today, port 445 is used by Microsoft Directory Services for Active Directory (AD) and for the Server Message Block (SMB) protocol over TCP/IP.

What is port 135 commonly used for?

Port 135 is used for RPC client-server communication; ports 139 and 445 are used for authentication and file sharing. UDP ports 137 and 138 are used for local NetBIOS browser, naming, and lookup functions.

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Is port 445 TCP or UDP?

Port 445 Details

Port(s) Protocol Service
445 tcp
445 udp
445 tcp trojan
445 tcp,udp microsoft-ds

What are ports 110 and 443 used for?

TCP port 110 is used for POP3 but POP3 is only used for incoming email, not outgoing email. TCP port 443 is used for HTTPS, not email.

What is port 139 commonly used for?

Port 139 is utilized by NetBIOS Session service. Enabling NetBIOS services provide access to shared resources like files and printers not only to your network computers but also to anyone across the internet. Therefore it is advisable to block port 139 in the Firewall.

What is TCP 161?

Port 161 is the default port on network devices to which SNMP queries are sent during the discovery and monitoring processes.

What is the ICMP port?

ICMP has no concept of ports, as TCP and UDP do, but instead uses types and codes. Commonly used ICMP types are echo request and echo reply (used for ping) and time to live exceeded in transit (used for traceroute).

What is network port 137 used for?

Port 137 is utilized by NetBIOS Name service. Enabling NetBIOS services provide access to shared resources like files and printers not only to your network computers but also to anyone across the internet.

What are common ports?

Some of the most commonly used ports, along with their associated networking protocol, are:

  • Ports 20 and 21: File Transfer Protocol (FTP). …
  • Port 22: Secure Shell (SSH). …
  • Port 25: Simple Mail Transfer Protocol (SMTP). …
  • Port 53: Domain Name System (DNS). …
  • Port 80: Hypertext Transfer Protocol (HTTP).
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