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  1. netbios - What is the sequence of Windows RPC ports 135, 137, 139 …

    Port 135 Port 137 Port 139 Higher ports that are published by Port 135's "catalog" Then I heard that Port 145 came into the mix to "make things better" with NBT/TCP but I'm not sure how this fits in with the …

  2. TCP/IP ports necessary for CIFS/SMB operation - Server Fault

    Jan 3, 2012 · 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 …

  3. networking - Is port 139 still vulnerable? - Server Fault

    Since the NetBIOS vulnerability is quite well-known a long time ago and heavily popularized, patches have been already released. So, is opening this 139 port OK now?

  4. windows - Forcing SMB Over 445 Instead of 80 - Server Fault

    Jan 10, 2015 · Direct-hosted SMB traffic without a network basic input/output system (NetBIOS): port 445 (TCP and UPD). In order to change this behavior, you basically need to disable NETBIOS over …

  5. How can I disable SAMBA broadcasting features? - Server Fault

    Jun 29, 2010 · This is blocking: UDP port 137 for NetBios Name Service UDP port 138 for NetBios Datagram services TCP port 139 for NetBios Session services TCP port 445 for NetBios Microsoft …

  6. netbios-ssn Port 139 open on Linux machine - Server Fault

    NetBIOS available on Linux Service: netbios-ssn Port 139 open on Linux machine I've been googling to no avail. I've been trying to close port 139 and 445 with both iptables and fuser -k, but it still reports …

  7. Why do I see a lot of incoming netbios activity on my Windows Firewall ...

    Oct 31, 2017 · I have been seeing a lot of firewall drops on port 137 and 138 (netbios) after I enabled default behavior on my Windows FW (Block incoming, Allow outgoing) What is the reason for all …

  8. Windows file explorer using port 80 (webdav) instead of 445 (samba …

    Aug 13, 2014 · You should check your "TCP/IP NetBIOS Helper" service. When this service crashed and Web Client exist, it will try to access UNC Path on WebDAV ( tcp port 80 ). Restart "TCP/IP …

  9. windows - Active Directory Ports to be Allowed - Server Fault

    Dec 5, 2017 · Global catalog LDAP: port 3268 TCP Global catalog LDAP over SSL: port 3269 TCP Kerberos: port 88 TCP, UDP DNS: port 53 TCP, UDP WINS resolution: port 1512 TCP, UDP WINS …

  10. Why would blocking NetBios packets impact SMB3? - Server Fault

    Mar 11, 2021 · Question Why should NetBios filtering impact SMB3 / the ability to connect to port 445? Context Some users (including myself) were having issues accessing file shares hosted in Azure …