Question

1. What would be a filter that would only show traffic to/from the hosts 172.30.211.1, 172.30.211.2, 172.30.211.3, and 172.30.211.5 but not traffic to/from the host 172.30.211.4?
2. What is the difference between the filter !ip.addr==216.115.74.0/24 and the filter ip.addr!=216.115.74.0/24

Answer 1

((((ip.dst == 172.30.211.1) || (ip.src == 172.30.211.2)) || (ip.dst == 172.30.211.3)) && (ip.dst == 172.30.211.5)) && !(ip.dst == 172.30.211.4)

Answer 2
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this will not show the IP packets which do contain !ip.addr==216.115.74.0/24 of whole subnet address starting from 216.115.74.0 to 216.155.74.255

ip.addr!=216.115.74.0/24 this will not show packet which not contain address from this subnet.

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