sudo tcpdump -i eth0 -w capture.dump
ip.dst==192.168.1.1 and tcp.dstport==1337
ip.addr==192.168.1.1 and tcp.port==1337
tcp.flags.reset==1
sudo tcpdump -i eth0 -w capture.dump "ip == 192.168.1.1 and tcp.port == 1337"