Using firewalld and the forwarding options (IP or port forward) might work not as expected if the default setup is left on the system. Consider…
Tag: firewalld
List all rules and IPs when using firewalld under CentOS
CentOS 7, CentOS 8, CentOS Stream 8, CentOS Stream 9 use firewalld service for the firewall of the machine. Firewalld service is easily controlled by…
firewalld and podman (or docker) – no internet in the container and could not resolve host
If you happen to use CentOS 8 you have already discovered that Red Hat (i.e. CentOS) switch to podman, which is a fork of docker….
Receive multicast packets on CentOS 7 (and other linux distros)
There are so many web pages and blogs post for multicast traffic under linux and how to enable it, but in most of them something…