445

TCP

SMB

Server Message Block

⚠️ Security: DependsStatus: Active📁 Category: File Transfer

📋 Basic Information

Port Number
445
Protocol
TCP
Service
SMB
Popularity
🔥 High
Description
Server Message Block over TCP/IP for Windows file and printer sharing
Tags
windowsfile-sharingsmbcifs

🔒 Security Information

💡

Security Notes

Major ransomware attack target, block external access

🔗 Related Ports

139

NETBIOS-SSN

NetBIOS Session Service

TCP

NetBIOS Session Service for Windows file and printer sharing

🔓 Security: Insecure📁 Category: File Transfer⚠️ deprecated

📚 References