Hi,
I'm writing a client and server program for cluster computation. I noticed that nmap
sees a specific port as open on Fedora Server and as filtered on Fedora
Workstation when the server is running and sees this port as closed on Fedora Server and
as filtered on Fedora Workstation when the server is not running.
While looking into the firewalld configuration I found that Fedora Workstation and Fedora
Server have one major difference their configuration files:
<port protocol="udp" port="1025-65535"/>
<port protocol="tcp" port="1025-65535"/>
After removing these specific lines from /etc/firewalld/zones/FedoraWorkstation.xml, using
firewall-cmd, the ports are still accessible by the client and server
program.
Can someone please tell me how to close these ports on Fedora Workstation? And why does
nmap report the ports as filtered on Fedora Workstation and as
open/close on Fedora Server?
Best regards,
Mischa.