Firewalling Samba

On port 445 SMB runs directly over TCP. The only difference is that the client skips the NetBIOS session (saves one round trip) then negotiates, authenticates, mounts etc. Check the properties of your network card. Somewhere in the Advanced IP Settings is a checkbox "Enable NetBIOS over TCP". Activate it and your computer uses port 139. Local Firewall Policies Overriding Domain Group Policies Jan 02, 2013 CompTIA Series - Internet Ports - Interface Technical Training TCP/UDP: 139: SMB (Server Message Block)Also Netbios Session Service: SMB over NetbiosTCP/UDP: 143: IMAP: TCP/UDP: 161: SNMP: UDP (TCP) 389: LDAP: TCP: 443: HTTPS (SSL/TLS/FTPS) TCP: 445: SMB: SMB over TCP (No need for Netbios layer) 500: IPSEC: IKE /ISAKMP: UDP/TCP: 636: Secured LDAP (LDAPS) TCP: 989: FTPS FTP over TLS/SSL DATA: TCP/UDP: 990 How to Disable NetBIOS Over TCP/IP and LLMNR Using GPO Dec 04, 2017

Oct 08, 2002 Securing Windows SMB and NetBios/NetBT Services – … It uses the following TCP and UDP ports: - UDP port 137 (name services) - UDP port 138 (datagram services) - TCP port 139 (session services) NetBIOS over TCP/IP (NBT) is installed and enabled by default for backwards compatibility with old systems (or SMB implementations); however Microsoft SMB Protocol can be used without Microsoft NetBIOS. 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 …

It uses the following TCP and UDP ports: - UDP port 137 (name services) - UDP port 138 (datagram services) - TCP port 139 (session services) NetBIOS over TCP/IP (NBT) is installed and enabled by default for backwards compatibility with old systems (or SMB implementations); however Microsoft SMB Protocol can be used without Microsoft NetBIOS.

Jan 02, 2013 CompTIA Series - Internet Ports - Interface Technical Training TCP/UDP: 139: SMB (Server Message Block)Also Netbios Session Service: SMB over NetbiosTCP/UDP: 143: IMAP: TCP/UDP: 161: SNMP: UDP (TCP) 389: LDAP: TCP: 443: HTTPS (SSL/TLS/FTPS) TCP: 445: SMB: SMB over TCP (No need for Netbios layer) 500: IPSEC: IKE /ISAKMP: UDP/TCP: 636: Secured LDAP (LDAPS) TCP: 989: FTPS FTP over TLS/SSL DATA: TCP/UDP: 990 How to Disable NetBIOS Over TCP/IP and LLMNR Using GPO