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This primitive helps us to apply filters on TCP and UDP port numbers. If our network number is different, then we can manually select the netmask or the CIDR prefix for the network. But if we want the source network or the destination network, then we must specify src|dst before the primitive. This primitive helps us to apply filters on network numbers. This primitive helps us to apply filters on packets that used the host as a gateway. But if we require the source address or destination address, then we must specify src|dst between the keywords ether and host.

This primitive helps us to apply filters on Ethernet host addresses. But if we need the source address or destination address, then we must specify src|dst before the primitive. This primitive helps us to apply filters on a host IP address or name. Wireshark’s capture filter for telnet for capturing all traffic except traffic from 10.0.0.5 tcp port 23 and not src host 10.0.0.5 Important Primitives:- host Wireshark’s capture filter for telnet for capturing traffic of a particular host : tcp port 23 and host 10.0.10.12Ģ.