SMB / Samba uses which port?

Study for the CPSA Port Numbers Exam. Practice with flashcards and multiple choice questions, each with hints and explanations. Get ready for your test!

Multiple Choice

SMB / Samba uses which port?

Explanation:
SMB/CIFS file sharing over TCP/IP uses port 445. Samba provides Windows‑compatible file sharing on Unix/Linux by using TCP 445 for direct SMB communication, which is the standard today. Historically, SMB could run over NetBIOS with ports 139 and 137-138, but that's less common now. The other ports correspond to different services: 25 is SMTP, 111 is RPC/portmapper, and 22 is SSH.

SMB/CIFS file sharing over TCP/IP uses port 445. Samba provides Windows‑compatible file sharing on Unix/Linux by using TCP 445 for direct SMB communication, which is the standard today. Historically, SMB could run over NetBIOS with ports 139 and 137-138, but that's less common now. The other ports correspond to different services: 25 is SMTP, 111 is RPC/portmapper, and 22 is SSH.

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