Jul 01, 2017

Feb 15, 2019 Mar 31, 2017 · For your ease of use here are ports you need to open for two-way samba communication with Windows and Linux desktop systems. ADVERTISEMENTS netbios-ns – 137/tcp # NETBIOS Name Service Samba only implements enough to allow workgroup browsing and master browser elections to operate. To block traffic over the NetBIOS Name Service and the NetBIOS Datagram Service, we need to block UDP ports 137 and 138. Once you have confirmed that the samba ports are not open on the system, open the Samba port using the following FirewallD command: # firewall-cmd --add-service=samba The above command will change the runtime, opening the port temporarily. Mar 29, 2020 · SMB uses either IP port 139 or 445. Port 139: SMB originally ran on top of NetBIOS using port 139. NetBIOS is an older transport layer that allows Windows computers to talk to each other on the same network. Port 445: Later versions of SMB (after Windows 2000) began to use port 445 on top of a TCP stack. Using TCP allows SMB to work over the internet. Aug 18, 2017 · Firewall ports for Samba (linux server and client) Get answers from your peers along with millions of IT pros who visit Spiceworks. I know for Samba we need port 445. However, I see the use of ports 137, 138, and 139 as well. The output displays that the services are listening on localhost (127.0.0.1) and the network interface with the IP address 10.99.0.1. On both interfaces, the ports 139/tcp and 445/tcp are opened. For further information on the output, see the netstat (8) manual page.

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.

CentOS / RHEL 7 : How to open the Firewall port for Samba Once you have confirmed that the samba ports are not open on the system, open the Samba port using the following FirewallD command: # firewall-cmd --add-service=samba The above command will change the runtime, opening the port temporarily. Firewall ports for Samba (linux server and client Aug 21, 2017

Jul 17, 2019

Preventing SMB traffic from lateral connections and Mar 10, 2020