wireshark-How to convert the ip into hostname using tshark

I used the below command to get the list of IP address of various entity,but i am not able to convert (identify) the hostname.

 tshark -r test_call_1.pcap -T fields -e ip.src -e tcp.srcport -e ip.dst -e tcp.dstport  tcp

sample output    21    43118    21    43118    21    43118    45791    45431

Can any one guide me on how to resolve these ip's to hostnames?

Thanks in Advance



To get tshark to print hostnames you need to enable hostname resolution by specifying the '-N n' option and selecting the hostname fields instead of the ip address by using e.g '-e ip.src_host'.

For example:

tshark -r test_call_1.pcap -N n -T fields -e ip.src_host -e tcp.srcport -e ip.dst_host -e tcp.dstport tcp

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