Jiste a presne proto posloucha web server na TCP portu :roll: .
Pro upresneni: tcpdump udp port 80
Co myslite ze to vrati pokud pristopite na web bezicim na tom stroji ? Ano, spravne, nic.
tcpdump udp port 80 vypada zhruba nasledovne:
15:31:33.900299 IP 10.1.1.127.52334 > 10.1.1.220.www: S 3560020655:3560020655(0) win 8192 <mss 1460,nop,nop,sackOK>
15:31:33.902719 IP 10.1.1.220.www > 10.1.1.127.52334: S 710956165:710956165(0) ack 3560020656 win 5840 <mss 1460,nop,nop,sackOK>
15:31:33.900379 IP 10.1.1.127.52334 > 10.1.1.220.www: . ack 1 win 64240
15:31:33.900477 IP 10.1.1.127.52334 > 10.1.1.220.www: P 1:530(529) ack 1 win 64240
15:31:33.900501 IP 10.1.1.220.www > 10.1.1.127.52334: . ack 530 win 6432
15:31:33.902196 IP 10.1.1.220.www > 10.1.1.127.52334: P 1:223(222) ack 530 win 6432
15:31:34.100184 IP 10.1.1.127.52334 > 10.1.1.220.www: . ack 223 win 64018
To jen tak pro uplnost ...