root@deathstar:~/ldap# tshark host fritz.box
Capturing on eth0
0.000000 192.168.66.1 -> 192.168.66.254 TCP 4820 > smtp [SYN] Seq=0 Len=0 MSS=1460 TSV=98814 TSER=0 WS=3
0.003744 192.168.66.254 -> 192.168.66.1 TCP smtp > 4820 [SYN, ACK] Seq=0 Ack=1 Win=5792 Len=0 MSS=1460 TSV=140977103 TSER=98814 WS=3
0.000341 192.168.66.1 -> 192.168.66.254 TCP 4820 > smtp [ACK] Seq=1 Ack=1 Win=5840 Len=0 TSV=98814 TSER=140977103
0.094588 192.168.66.254 -> 192.168.66.1 SMTP Response: 220 deathstar.empire.glx ESMTP Postfix
0.094973 192.168.66.1 -> 192.168.66.254 TCP 4820 > smtp [ACK] Seq=1 Ack=41 Win=5840 Len=0 TSV=98823 TSER=140977126
0.095651 192.168.66.1 -> 192.168.66.254 SMTP Command: EHLO fritzbox
0.095695 192.168.66.254 -> 192.168.66.1 TCP smtp > 4820 [ACK] Seq=41 Ack=16 Win=5792 Len=0 TSV=140977127 TSER=98823
0.098393 192.168.66.254 -> 192.168.66.1 SMTP Response: 250-deathstar.empire.glx
0.102277 192.168.66.1 -> 192.168.66.254 SMTP Command: QUIT
0.103418 192.168.66.254 -> 192.168.66.1 SMTP Response: 221 2.0.0 Bye
0.105240 192.168.66.254 -> 192.168.66.1 TCP smtp > 4820 [FIN, ACK] Seq=253 Ack=22 Win=5792 Len=0 TSV=140977129 TSER=98824
0.138460 192.168.66.1 -> 192.168.66.254 TCP 4820 > smtp [ACK] Seq=22 Ack=254 Win=6912 Len=0 TSV=98828 TSER=140977129
2.099324 192.168.66.1 -> 192.168.66.254 TCP 4820 > smtp [RST, ACK] Seq=22 Ack=254 Win=6912 Len=0 TSV=99024 TSER=1409771