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Zorluk: OrtaCommon Ports and Protocols

A storage administrator is deploying a network-attached storage array to host shared folders for Windows workstations on a isolated VLAN. To meet security standards, network traffic must avoid legacy NetBIOS encapsulation and operate strictly via direct file sharing over TCP/IP. Which port must be opened on the internal firewall to permit direct Server Message Block (SMB) communications?

  1. TCP port 445Cevap
  2. B
    TCP port 139
  3. C
    UDP port 137
  4. D
    TCP port 21

Cevap

TCP port 445 is the standard port for direct Server Message Block (SMB) file sharing over TCP/IP without NetBIOS.
Direct Server Message Block (SMB) file sharing operates natively over TCP/IP using TCP port 445. Opening TCP port 445 allows hosts to share files and printers directly across IP subnets without relying on legacy NetBIOS session layer protocol wrappers.

Adım Adım Çözüm

1
Identify the target service protocol and requirement
The requirement specifies direct Server Message Block (SMB) traffic over TCP/IP without legacy NetBIOS transport.
Legacy SMB relied on NetBIOS framing over ports 137-139, whereas modern SMB runs directly over IP networks on a single dedicated port.
2
Map the direct SMB service to its standard transport port
Direct SMB over TCP/IP utilizes TCP port 445.
Starting with Windows 2000, Microsoft implemented SMB directly on top of the TCP transport layer via port 445.

Anahtar Kavram

Common Network Ports - Server Message Block (SMB)
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Common Ports and Protocols

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