Jun 10, 2020 · What are ports 139 and 445? Port 139: Used by SMB dialects that communicate over NetBIOS, a transport layer protocol designed to use in Windows Port 445: Used by newer versions of SMB (after Windows 2000) on top of a TCP stack, allowing SMB to communicate over the

We needn't 139 & 445 port if the machine don' share files or printers to other machines. You can close these ports in firewall. The last remote exploits that targeted NetBIOS/139 were in the Windows NT/2000 day to the best of my recollection. Port 139 is typically used for file/printer sharing, including directory replication with Active Directory, trusts, remote access of event logs, etc. Nov 30, 2017 · TCP Port 139 and UDP 138 network ports are used by the SYSVOL replication service to replicate contents of SYSVOL folder. UDP Port 389 for LDAP network port is used to handle normal authentication queries from client computers. TCP and UDP Port 464 is used for Kerberos Password Change. ポート139は技術的には「NBT over IP」として知られていますが、ポート445は「IP over SMB」です。 SMB を意味する 'サーバーメッセージブロック'現代語のサーバーメッセージブロックは、 共通インターネットファイルシステム。このシステムは、ファイル Feb 04, 2015 · Opening up SMB ports (TCP 139/TCP 445 among others) to the Internet is such a terrifically bad idea I don't know where to start. Why do you even think you need to do this? I cannot even begin to describe what a thoroughly horrible idea this is. I could not in good conscience assist you in this enterprise.

May 27, 2020 · Port 139 communications depend on Internet Control Message Protocol (ICMP) echo messages. If IP version 6 (IPv6) is not installed, port 445 communications will also depend on ICMP for name resolution.

Sep 26, 2019 · Firewall: Block ports 135-139 plus 445 in and out. These are used by hackers to steal your info and take control of your pc and after doing so will use NetBIOS to then use your computer to take over another, etc, etc.. Port 137-139 is for Windows Printer and File Sharing but also creates a security risk if unblocked. Forum discussion: Hello, I need to get my computer to be able to communicate through ports 139 and 445 for some file sharing software that I use with my friends. I have WOW internet service with Jun 05, 2006 · Ports 137-139 are NetBios ports which are used for file and printer sharing across a LAN. So if you are behind a router, trust your network, and need to share files or printers, then they should be open. However, these ports are exploited by several malwares, and also if open can allow a cracker access to your pc and files Apr 29, 2020 · Agent/Server communication port - It is a random 5-digit port number set during installation. To determine this port number, check the "Client_LocalServer_Port" parameter in the \PCCSRV\ofcscan.ini file. NetBIOS ports - This uses TCP/UDP port 137, TCP port 139, and TCP port 445. These ports are used when installing clients/agents via Remote

Disable any dmz or port forwarding you may have configured. Disable UPNP . Enable SPI firewalls. If you use Cloud Connect some ports are opened for your remote configuration feature but I don't know which ones they are.

Feb 04, 2015 · Opening up SMB ports (TCP 139/TCP 445 among others) to the Internet is such a terrifically bad idea I don't know where to start. Why do you even think you need to do this? I cannot even begin to describe what a thoroughly horrible idea this is. I could not in good conscience assist you in this enterprise. Check dynamic port range. RPC. TCP. 135. Filestream. 139 & 445. SSIS. TCP. 135. DCOM. WMI. TCP. 135. Used by SSCM, it runs over DCOM (aka Network OLE) when accessing remote data. Port(s) Source article(s) Client Firewall: The Sophos Client Firewall does not need any ports to be opened.--Sophos Update Manager (SUM) SUM uses TCP port 80 for connections to an HTTP warehouse, and the NetBIOS ports for connections to a warehouse using UNC. With the release of v1.7.0 SUM uses TCP port 443 for connections to a HTTPS warehouse. Disable any dmz or port forwarding you may have configured. Disable UPNP . Enable SPI firewalls. If you use Cloud Connect some ports are opened for your remote configuration feature but I don't know which ones they are. So Microsoft grabbed a trio of three successive Internet ports 137, 138, and 139, to use for the transport of their existing NetBIOS protocol over IP-based LAN and WAN networks. The horrors of insecurity resulting from Microsoft's exposure of their NetBIOS protocol to the Internet are legendary.