wireshark

Goto: "Statistics" -> 'Conversations" -> "List"

Export PDU's (high level data)

Giving user sudo access

<user_name> ALL = NOPASSWD: /usr/sbin/wireshark

Setting network privileges for dumpcap

sudo setcap cap_net_raw,cap_net_admin+eip /usr/sbin/dumpcap

tshark

Tip: Extract WPA handshake from large Pcap file.

tshark -r <inputfile> -R "eapol || wlan_mgt.tag.interpretation eq \
<ESSID> || (wlan.fc.type_subtype==0x08 && wlan_mgt.ssid eq <ESSID>)" \
    -w <outputfile>

Tip: Extract SSL Certs from large PCAP file.

tshark -nr ssl.pcapng -2 -R "ssl.handshake.certificate" -V > out.txt