Conceptos de Interconexión de Redes (página 4)

# traceroute www.google.com traceroute: Warning: www.google.com has multiple addresses; using 66.102.9.99 traceroute to www.google.akadns.net (66.102.9.99), 30 hops max, 38 byte packets 1 ge-4-6.uonet2-gw.uoregon.edu (128.223.60.3) 0.310 ms 0.236 ms 0.193 ms 2 0.ge-0-0-0.uonet8-gw.uoregon.edu (128.223.2.8) 0.324 ms 0.331 ms 0.294 ms 3 eugn-car1-gw.nero.net (207.98.66.11) 0.363 ms 0.296 ms 0.416 ms 4 eugn-core2-gw.nero.net (207.98.64.169) 0.672 ms 1.029 ms 0.601 ms 5 ptck-core2-gw.nero.net (207.98.64.2) 2.911 ms 2.994 ms 2.930 ms 6 ptck-core1-gw.nero.net (207.98.64.137) 3.255 ms 2.874 ms 2.923 ms 7 so-6-1.hsa2.Seattle1.Level3.net (63.211.200.245) 6.521 ms 6.153 ms 6.322 ms 8 ge-6-1-1.mp2.Seattle1.Level3.net (209.247.9.85) 6.619 ms 6.565 ms 6.335 ms 9 so-0-0-0.bbr2.NewYork1.Level3.net (64.159.0.238) 86.194 ms 86.239 ms 86.580 ms 10 so-2-0-0.mp2.London1.Level3.net (212.187.128.154) 147.899 ms 147.968 ms 149.461 ms 11 so-3-0-0.mp2.Amsterdam1.Level3.net (212.187.128.13) 155.019 ms 155.738 ms 155.406 ms 12 ge-11-2.ipcolo2.Amsterdam1.Level3.net (213.244.165.116) 157.499 ms 155.627 ms 155.857 ms 13 212.72.44.66 (212.72.44.66) 156.319 ms 156.168 ms 156.142 ms

Traceroute: Funcionamiento # traceroute 128.223.142.13 traceroute to 128.223.142.13 (128.223.142.13), 30 hops max, 38 byte packets 1 ge-4-6.uonet2-gw.uoregon.edu (128.223.60.3) 0.282 ms 0.206 ms 0.186 ms 2 darkwing (128.223.142.13) 0.266 ms 0.197 ms 0.209 ms

(simultáneamente)

# tcpdump -lnv host 128.223.142.13 or icmp tcpdump: listening on eth0 128.223.60.27.33962 > 128.223.142.13.33435: udp 10 [ttl 1] (id 12001, len 38) 128.223.60.3 > 128.223.60.27: icmp: time exceeded in-transit [tos 0xc0] (ttl 255, id 64235, len 56) 128.223.60.27.33962 > 128.223.142.13.33436: udp 10 [ttl 1] (id 12002, len 38) 128.223.60.3 > 128.223.60.27: icmp: time exceeded in-transit [tos 0xc0] (ttl 255, id 64236, len 56) 128.223.60.27.33962 > 128.223.142.13.33437: udp 10 [ttl 1] (id 12003, len 38) 128.223.60.3 > 128.223.60.27: icmp: time exceeded in-transit [tos 0xc0] (ttl 255, id 64237, len 56) 128.223.60.27.33962 > 128.223.142.13.33438: udp 10 (ttl 2, id 12004, len 38) 128.223.142.13 > 128.223.60.27: icmp: 128.223.142.13 udp port 33438 unreachable (DF) (ttl 254, id 14809, len 66) 128.223.60.27.33962 > 128.223.142.13.33439: udp 10 (ttl 2, id 12005, len 38) 128.223.142.13 > 128.223.60.27: icmp: 128.223.142.13 udp port 33439 unreachable (DF) (ttl 254, id 14810, len 66) 128.223.60.27.33962 > 128.223.142.13.33440: udp 10 (ttl 2, id 12006, len 38) 128.223.142.13 > 128.223.60.27: icmp: 128.223.142.13 udp port 33440 unreachable (DF) (ttl 254, id 14811, len 66)

Telnet a puertos conocidos # telnet www.uoregon.edu 80 Trying 128.223.142.13… Connected to www.uoregon.edu. Escape character is '^]'. GET /

University of Oregon Home Page

# telnet darkwing.uoregon.edu 25 Trying 128.223.142.13… Connected to darkwing.uoregon.edu. Escape character is '^]'. 220 darkwing.uoregon.edu ESMTP Sendmail 8.12.11/8.12.11; Mon, 23 Feb 2004 15:52:28 -0800 (PST) vrfy cvicente 250 2.1.5 Carlos Vicente quit 221 2.0.0 darkwing.uoregon.edu closing connection Connection closed by foreign host.