* The firewall rules are set to deny any traffic from any source to specific destination IP addresses on any port.
* The destination IP addresses are in different ranges, but one of them is in the multicast range of
224.0.0.0 to 239.255.255.25512.
* The multicast range is used to send data to multiple recipients at once, such as streaming video or audio34.
* The multicast server on the network is likely using an IP address in the multicast range to broadcast its data to the clients.
* Therefore, the firewall rule that is most likely causing the issue is the one that denies any traffic to the IP address 232.1.4.9, which is in the multicast range.
* The other rules are not likely to affect the multicast server, unless it is using one of those IP addresses as well.
References:
* CompTIA Network+ N10-008 Study Guide, Chapter 2: Network Protocols and Services, page 51.
* Professor Messer's CompTIA N10-008 Network+ Course Notes, Section 2.1: Common TCP and UDP Ports, page 15.
* CompTIA Network+ N10-008 Study Guide, Chapter 2: Network Protocols and Services, pages 53-54.
* Professor Messer's CompTIA N10-008 Network+ Training Course, Video 2.1: Common TCP and UDP Ports, 6.