samba_ports_usage
Table of Contents
Samba ports usage
Introduction
If you require to secure your Samba installation with a firewall, you would need information, what ports and protocols are used. This page will give you an overview.
Identify on which ports and interfaces Samba is listening
You can use “netstat” to identify which ports Samba and related daemons are listening on and on which IPs:
# netstat -tulpn | egrep "samba|smbd|nmbd|winbind"
The following is a snippet of an example output:
tcp 0 0 127.0.0.1:139 0.0.0.0:* LISTEN 43270/smbd tcp 0 0 10.0.0.1:139 0.0.0.0:* LISTEN 43270/smbd tcp 0 0 10.0.0.1:88 0.0.0.0:* LISTEN 43273/samba tcp 0 0 127.0.0.1:88 0.0.0.0:* LISTEN 43273/samba tcp 0 0 127.0.0.1:445 0.0.0.0:* LISTEN 43270/smbd tcp 0 0 10.12.112.84:445 0.0.0.0:* LISTEN 43270/smbd .....
The above example shows, that the services are listening on localhost (127.0.0.1) and the interface with IP 10.12.112.84 - each on the listed ports (139, 88, 445,…).
Port usage when Samba runs as DC
* Samba, like Windows, supports dynamic RPC services. The range starts at 1024. If something occupies this port for some reason, it will be a different port (literally walked up from 1024).
samba_ports_usage.txt · Last modified: 2020/04/10 17:38 (external edit)
Except where otherwise noted, content on this wiki is licensed under the following license: GNU Free Documentation License 1.3
