[Linux-Biella] Problema web (aggiornamento)

[Simone Stomboli]

Il giorno gio, 05/06/2008 alle 14.05 +0200, Simone Stomboli ha scritto:
> Da un paio di giorni non mi riesce di collegarmi ad alcuni siti.

Ho fatto qualche test.
Ho utilizzato come campioni corriere.it per i siti che non funzionano e
google.com per quelli che funzionano. Nel senso che firefox visualizza
la home di google.com ma non di corriere.it-

1. ping

simone a HAL9000:~$ ping google.com
PING google.com (64.233.167.99) 56(84) bytes of data.

--- google.com ping statistics ---
12 packets transmitted, 0 received, 100% packet loss, time 11009ms

simone a HAL9000:~$ ping corriere.it
PING corriere.it (194.20.158.241) 56(84) bytes of data.

--- corriere.it ping statistics ---
12 packets transmitted, 0 received, 100% packet loss, time 10999ms

2. traceroute

simone a HAL9000:~$ traceroute google.com
traceroute to google.com (64.233.167.99), 30 hops max, 40 byte packets
 1  * * *
 [da 2 a 29 tutti uguali]
30  * * *
simone a HAL9000:~$ traceroute corriere.it
traceroute to corriere.it (194.20.158.101), 30 hops max, 40 byte packets
 1  * * *
 [da 2 a 29 tutti uguali]
30  * * *

3. wireshark sulle porte 80 e 53

Source                Destination         
Protocol Info

192.168.1.3           resolver1.bbbell.it  
DNS      Standard query A www.google.com

resolver1.bbbell.it   192.168.1.3
DNS      Standard query response CNAME www.l.google.com A 66.249.93.104
A 66.249.93.147 A 66.249.93.99

192.168.1.3           www.l.google.com
TCP      42768 > www [SYN] Seq=0 Len=0 MSS=1460
 
www.l.google.com      192.168.1.3
TCP      www > 42768 [SYN, ACK] Seq=0 Ack=1 Win=5720 Len=0 MSS=1430
     
  
[ecc. ecc.]

192.168.1.3           resolver1.bbbell.it   
DNS      Standard query A www.corriere.it

resolver1.bbbell.it   192.168.1.3
DNS      Standard query response A 194.20.158.101 A 194.20.158.241

192.168.1.3           www.corriere.it
TCP      51790 > www [SYN] Seq=0 Len=0 MSS=1460

192.168.1.3           www.corriere.it
TCP      51790 > www [SYN] Seq=0 Len=0 MSS=1460

192.168.1.3           www.corriere.it
TCP      51790 > www [SYN] Seq=0 Len=0 MSS=1460

192.168.1.3           www.corriere.it
TCP      51790 > www [SYN] Seq=0 Len=0 MSS=1460

[ecc. ecc.]

Boh?
Salùt
S.

P.S. Incidentalmente, cosa significa, in wireshark, Checksum: 0xc828
[incorrect, should be 0x1d21 (maybe caused by "UDP checksum offload"?)]