Time and again, whenever I look at the Firewalld rules, I find myself wondering here and there what the services actually do, what effect they have, what kind of Internet traffic they allow through, and so on. I’ve searched various Firewalld pages, but I just can’t find a description of the abbreviations—which aren’t always self-explanatory—explaining what they mean and what they do. I did find a list on Red Hat, but it didn’t include any explanations of the individual services.
list of services supported by firewalld
Afterwards the setting of my home-zone
<zone>
<short>Home</short>
<description>
For use in home areas. You mostly trust the other computers on networks to not harm your computer. Only selected incoming connections are accepted.
</description>
<service name="ssh"/>
<service name="mdns"/>
<service name="samba-client"/>
<service name="dhcpv6-client"/>
<service name="slp"/>
<forward/>
</zone>
Where the Service “Samba-client” is relatively self-explanatory, services like “slp” aren’t.
Well, I can get some tech. infos by the firewall-cmd command.
petermb@EndeavourOSNeo-Machine ~]$ sudo firewall-cmd --info-service=slp
[sudo] Passwort für petermb:
slp
ports: 427/tcp 427/udp
protocols:
source-ports:
modules:
destination:
includes:
helpers:
Is there any documentation of all the services, or do I have to look up each one individually?
Bink: I fixed your 2nd code block.