May 15, 2019 · If the client is an older version of Windows, like Windows 2000, and has NBT enabled, it will always try to connect to the server at both port 139 and 445 simultaneously. If there is a response from port 445, it sends a TCP RST (reset) to port 139, and continues its SMB session to port 445 only.
Jan 10, 2019 How to detect and defend against a TCP port 445 exploit Along with ports 135, 137 and 139, port 445 is a traditional Microsoft networking port with tie-ins to the original NetBIOS service found in earlier versions of Windows OSes. SMBポートとは何ですか？ポート445とポート139は何のために … ポート445とポート139は何のために使われていますか？ NetBIOS を意味する ネットワーク基本入出力システム 。 LAN（Local Area Network）上のアプリケーション、PC、およびデスクトップがネットワークハードウェアと通信し、ネットワークを介してデータを送信 The dangers of open port 139 - SearchSecurity I recently discovered I have an open port: 139. I did some research and found out it is a Netbios-ssn port used for sharing files. I have scanned for relevant Trojans and found none.
Jul 30, 2013
SOLVED: SMB not working (ports 139 and 445 not listening Jul 28, 2017 [SOLVED] Ricoh Aficio MP C3002 scan not working - Printers Dec 22, 2016
SOLVED: SMB not working (ports 139 and 445 not listening
networking - Why can't I connect on port 445? - Server Fault In addition to the perfmon issue, I cannot browse shares (e.g. \uncpath\c$), connect to the remote registry, or connect to port 445 over telnet. I'm on the same subnet as the server, and the Windows Firewall is turned off on both the server and my computer. windows - TCP/IP ports necessary for CIFS/SMB operation Ports 137-139 are for NetBios/Name resolution. Without it you will have to access machines by IP address opposed to NetBIOS name. Example \\192.168.1.100\share_name opposed to \\my_file_server\share_name. So port 445 is sufficient if you can work with IP addresses only. Isolate UDP ports 137 / 138 and TCP ports 139 / 445 Jun 14, 2017