Jakim cudem działa Internet?
Grzegorz Nosek,
Layer 7 co ja chcę? DNS gdzie mam iść? IP jak tam trafić? BGP dlaczego tamtędy?
HTTP
daj mi stronę www.wp.pl
ok, tak wygląda
… i to zdjęcie
ok, proszę bardzowww.wp.pl
SMTP
kto tam?
to ja, chcę wysłać maila
ok, dawaj
„kochana ciociu…”smtp.megiteam.pl
31.186.83.105smtp.megiteam.pl
?
31.186.83.105smtp.megiteam.pl
DNS
DNSroot
.com
.example.com.megiteam.pl .cact.us
smtp.megiteam.pl = 31.186.83.105 www.example.com = 93.184.216.34 cact.us = 98.124.198.1
.pl .us
192.168.1.0/24
192.168.1.0/24
!0.0.0.0/0 -> 192.168.1.1
192.168.1.1
IP
89.76.214.0/24192.168.1.0/24
89.76.214.1
192.168.1.0/24
89.76.214.0/24
0.0.0.0/0 -> 89.76.214.1
IP
tracert -h 100 216.81.59.173
WP
PLIX GTS
UPC NETIA
WP PLIX -> WP
PLIX -> WP GTS -> PLIX -> WP
PLIX -> WP GTS -> PLIX -> WP
BGP
X
Do poczytania: http://research.dyn.com/2008/02/pakistan-hijacks-youtube-1/ http://research.dyn.com/2013/11/mitm-internet-hijacking/ http://research.dyn.com/2014/11/chinese-routing-errors-redirect-russian-traffic/ !!Ikonki (CC-BY-3.0): http://thenounproject.com/term/computer/6034/ http://thenounproject.com/term/server/80288/ http://thenounproject.com/term/router/65161/ http://thenounproject.com/term/thought-bubble/14958/ http://thenounproject.com/term/cloud/6853/ http://thenounproject.com/term/router/16624/