Re: Siti irraggiungibili (lunga)
In un giorno di pioggia, verso il Wed, 26 Jun 2002 17:54:53 +0200,
walter valenti <walter@waltervalenti.it> uscì senza ombrella e
assaporando le gocce cadere sulla sua faccia disse:
> Puoi vedere con tcpdump cosa passa ???
certo!
Allora, se tento di collegarmi a www.punto-informatico.it il risultato è
il seguente:
----------------------------
tcpdump: listening on ppp0
20:23:29.683650 151.25.36.31.1038 > 195.210.91.100.domain: 15386+ A?
www.punto-informatico.it. (42) (DF) 20:23:29.831574
195.210.91.100.domain > 151.25.36.31.1038: 15386 1/2/2 A 62.152.117.47
(138) (DF) 20:23:29.832428 151.25.36.31.1245 > 62.152.117.47.www: SWE
1006627697:1006627697(0) win 5840 <mss 1460,sackOK,timestamp 431580
0,nop,wscale 0> (DF) 20:23:32.831609 151.25.36.31.1245 >
62.152.117.47.www: SWE 1006627697:1006627697(0) win 5840 <mss
1460,sackOK,timestamp 431880 0,nop,wscale 0> (DF) 20:23:38.831615
151.25.36.31.1245 > 62.152.117.47.www: SWE 1006627697:1006627697(0) win
5840 <mss 1460,sackOK,timestamp 432480 0,nop,wscale 0> (DF)
20:23:40.131576 151.5.184.54 > 224.0.0.1: igmp query v3 [tos 0xc0] [ttl
1] 20:23:40.261579 151.5.184.54 > 224.0.0.13: pim v2 Hello (Hold-time
1m45s) (OLD-DR-Priority: 1) (State Refresh Capable ?0x1000000?) [tos
0xc0] [ttl 1] 20:23:50.831611 151.25.36.31.1245 > 62.152.117.47.www:
SWE 1006627697:1006627697(0) win 5840 <mss 1460,sackOK,timestamp 433680
0,nop,wscale 0> (DF)-------------------------------
e poi richiesta scaduta, mentre se tento di collegarmi a www.nvidia.it:
-------------------------------
tcpdump: listening on ppp0
20:25:58.530522 151.25.36.31.1038 > 195.210.91.100.domain: 15387+ A?
www.nvidia.it. (31) (DF) 20:25:58.671575 195.210.91.100.domain >
151.25.36.31.1038: 15387 1/2/2 A 209.213.198.80 (142) (DF)
20:25:58.672405 151.25.36.31.1246 > 209.213.198.80.www: SWE
1167153853:1167153853(0) win 5840 <mss 1460,sackOK,timestamp 446464
0,nop,wscale 0> (DF) 20:26:01.671611 151.25.36.31.1246 >
209.213.198.80.www: SWE 1167153853:1167153853(0) win 5840 <mss
1460,sackOK,timestamp 446764 0,nop,wscale 0> (DF) 20:26:07.671611
151.25.36.31.1246 > 209.213.198.80.www: SWE 1167153853:1167153853(0) win
5840 <mss 1460,sackOK,timestamp 447364 0,nop,wscale 0> (DF)
20:26:11.061576 151.5.184.54 > 224.0.0.13: pim v2 Hello (Hold-time
1m45s) (OLD-DR-Priority: 1) (State Refresh Capable ?0x1000000?) [tos
0xc0] [ttl 1] 20:26:19.671612 151.25.36.31.1246 > 209.213.198.80.www:
SWE 1167153853:1167153853(0) win 5840 <mss 1460,sackOK,timestamp 448564
0,nop,wscale 0> (DF) 20:26:41.151578 151.5.184.54 > 224.0.0.13: pim v2
Hello (Hold-time 1m45s) (OLD-DR-Priority: 1) (State Refresh Capable
?0x1000000?) [tos 0xc0] [ttl 1] 20:26:41.161574 151.5.184.54 >
224.0.0.1: igmp query v3 [tos 0xc0] [ttl 1]-----------------
Grazie e ciao
InSa
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