Ping a pc dietro router
Nicola
nicbed a email.it
Gio 13 Apr 2006 11:50:13 UTC
Ciao Carlo
Scusami, ma mi sembra di essermi espresso chiaramente.
> 2 cose :
> 1)il ping è composto da due pacchetti:
> quello inviato dall'esterno verso il tuo pc (ECHO_REQUEST)
Appunto è di questo che sto parlando!
come è possibile che il firewall installato su un pc locale e con un
router in mezzo, continui ad avvisarmi che blocca tentativi di Ping
proveniente da IP esterni?
Al router c'è collegato solo questo pc!
> 2)che c'entrano le porte con l'ICMP, le porte c'entrano col livello
trasporto (TCP e UDP), ma i'ICMP funziona a livello rete (IP).
Ho semplicemente specificato come fosse la mia configurazione di nat e
virtual server.
> 3)Se tenti di pingare un 192.168 dall'esterno certo che non ci riesci,
infatti questo lo so, ma evidentemente c'è un modo x farlo oppure:
1. il router non fa il suo lavoro o c'è qualcosa che è configurato male
e permette di vedere questo pc dall'esterno (ma non so come)
2. oppure il personal firewall installato sul pc è un millanatatore..
cioè dice che blocca delle cose che in teoria non dovrebbero esiste?
So che non è la mailing list giusta, però se volete provare, installate
su un pc windows questo firewall www.filseclab.com (è gratuito)
Se da un pc esterno faccio il ping a questo IP, mi risponde il router e
cmq il firewall nn mi da alcun avviso di blocco.
Segno quindi che non si sta parlando del semplice ping numero_ip ma di
qualcosa di diverso.
BOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOo... ammetto la mia ignoranza !
A riprova di quanto dico vi riporto parte del file di log sul blocco ICMP
2 Deny SYSTEM In 192.168.2.2 87.0.209.20 RECV/102
12.04.30 ICMP_UNREACH[ICMP_UNREACH_PORT](bad port)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 87.218.74.132 RECV/97
12.05.25 ICMP_UNREACH[ICMP_UNREACH_PORT](bad port)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 194.242.104.28 RECV/97
12.07.46 ICMP_UNREACH[ICMP_UNREACH_PORT](bad port)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 195.82.160.15 RECV/70
12.08.47 ICMP_UNREACH[ICMP_UNREACH_PORT](bad port)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 221.11.72.2 RECV/70
12.10.28 ICMP_UNREACH[ICMP_UNREACH_PORT](bad port)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 87.3.124.26 RECV/70
12.16.31 ICMP_UNREACH[ICMP_UNREACH_PORT](bad port)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 83.152.232.242 RECV/97
12.19.42 ICMP_UNREACH[ICMP_UNREACH_HOST](bad host)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 82.49.16.238 RECV/70
12.21.41 ICMP_UNREACH[ICMP_UNREACH_PORT](bad port)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 218.18.109.212 RECV/97
12.21.52 ICMP_UNREACH[ICMP_UNREACH_PORT](bad port)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 88.152.207.195 RECV/70
12.22.05 ICMP_UNREACH[ICMP_UNREACH_PORT](bad port)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 60.223.100.73 RECV/70
12.25.39 ICMP_UNREACH[ICMP_UNREACH_PORT](bad port)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 151.6.97.94 RECV/70
12.29.09 ICMP_UNREACH[ICMP_UNREACH_HOST](bad host)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 151.6.97.94 RECV/70
12.29.12 ICMP_UNREACH[ICMP_UNREACH_HOST](bad host)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 151.6.97.94 RECV/70
12.29.18 ICMP_UNREACH[ICMP_UNREACH_HOST](bad host)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 201.9.60.36 RECV/70
12.29.18 ICMP_UNREACH[ICMP_UNREACH_PORT](bad port)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 221.216.247.228 RECV/70
12.29.32 ICMP_UNREACH[ICMP_UNREACH_PORT](bad port)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 83.19.142.2 RECV/97
12.30.32 ICMP_UNREACH[ICMP_UNREACH_PORT](bad port)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 83.45.190.138 RECV/70
12.31.51 ICMP_UNREACH[ICMP_UNREACH_PORT](bad port)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 221.216.247.228 RECV/70
12.33.33 ICMP_UNREACH[ICMP_UNREACH_PORT](bad port)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 60.223.100.73 RECV/70
12.35.40 ICMP_UNREACH[ICMP_UNREACH_PORT](bad port)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 87.8.96.147 RECV/70
12.36.08 ICMP_UNREACH[ICMP_UNREACH_PORT](bad port)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 83.45.190.138 RECV/70
12.36.51 ICMP_UNREACH[ICMP_UNREACH_PORT](bad port)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 87.219.37.240 RECV/97
12.38.42 ICMP_UNREACH[ICMP_UNREACH_HOST](bad host)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 83.59.17.174 RECV/70
12.40.34 ICMP_UNREACH[ICMP_UNREACH_PORT](bad port)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 81.168.223.222 RECV/70
12.44.15 ICMP_UNREACH[ICMP_UNREACH_PORT](bad port)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 84.220.143.114 RECV/70
12.44.51 ICMP_UNREACH[ICMP_UNREACH_PORT](bad port)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 60.223.100.73 RECV/97
12.46.40 ICMP_UNREACH[ICMP_UNREACH_PORT](bad port)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 80.35.64.241 RECV/70
12.48.30 ICMP_UNREACH[ICMP_UNREACH_PORT](bad port)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 222.141.20.226 RECV/97
12.50.16 ICMP_UNREACH[ICMP_UNREACH_PORT](bad port)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 81.168.223.222 RECV/70
12.52.15 ICMP_UNREACH[ICMP_UNREACH_PORT](bad port)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 84.173.180.139 RECV/94
12.59.03 ICMP_UNREACH[ICMP_UNREACH_HOST](bad host)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 81.37.190.52 RECV/97
13.03.42 ICMP_UNREACH[ICMP_UNREACH_PORT](bad port)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 87.3.232.163 RECV/70
13.07.33 ICMP_UNREACH[ICMP_UNREACH_PORT](bad port)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 87.123.40.115 RECV/97
13.07.41 ICMP_UNREACH[ICMP_UNREACH_PORT](bad port)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 151.6.125.94 RECV/70
13.08.43 ICMP_UNREACH[ICMP_UNREACH_HOST](bad host)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 151.6.125.94 RECV/70
13.08.50 ICMP_UNREACH[ICMP_UNREACH_HOST](bad host)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 218.170.24.143 RECV/97
13.10.37 ICMP_UNREACH[ICMP_UNREACH_PORT](bad port)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 222.211.146.101 RECV/70
13.10.37 ICMP_UNREACH[ICMP_UNREACH_PORT](bad port)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 87.10.108.83 RECV/102
13.12.38 ICMP_UNREACH[ICMP_UNREACH_PORT](bad port)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 200.164.159.232 RECV/70
13.12.54 ICMP_UNREACH[ICMP_UNREACH_PORT](bad port)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 151.42.76.8 RECV/70
13.13.02 ICMP_UNREACH[ICMP_UNREACH_PORT](bad port)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 213.155.219.89 RECV/102
13.14.09 ICMP_UNREACH[ICMP_UNREACH_PORT](bad port)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 194.242.104.28 RECV/97
13.15.53 ICMP_UNREACH[ICMP_UNREACH_PORT](bad port)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 87.123.40.115 RECV/97
13.16.42 ICMP_UNREACH[ICMP_UNREACH_PORT](bad port)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 201.22.219.223 RECV/70
13.17.43 ICMP_UNREACH[ICMP_UNREACH_PORT](bad port)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 87.218.74.132 RECV/97
13.18.32 ICMP_UNREACH[ICMP_UNREACH_PORT](bad port)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 80.94.108.44 RECV/97
13.19.22 ICMP_UNREACH[ICMP_UNREACH_PORT](bad port)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 89.53.153.17 RECV/70
13.24.44 ICMP_UNREACH[OTHER](Unknow Sub Code)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 83.152.232.242 RECV/97
13.24.47 ICMP_UNREACH[ICMP_UNREACH_HOST](bad host)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 206.105.64.216 RECV/70
13.24.59 ICMP_UNREACH[ICMP_UNREACH_HOST](bad host)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 58.50.13.132 RECV/70
13.26.34 ICMP_UNREACH[ICMP_UNREACH_PORT](bad port)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 220.175.150.196 RECV/97
13.28.55 ICMP_UNREACH[ICMP_UNREACH_PORT](bad port)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 80.94.108.44 RECV/97
13.32.25 ICMP_UNREACH[ICMP_UNREACH_PORT](bad port)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 219.150.245.3 RECV/70
13.33.34 ICMP_UNREACH[ICMP_UNREACH_PORT](bad port)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 85.59.49.111 RECV/97
13.35.13 ICMP_UNREACH[ICMP_UNREACH_PORT](bad port)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 83.19.142.2 RECV/97
13.35.41 ICMP_UNREACH[ICMP_UNREACH_PORT](bad port)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 220.175.150.196 RECV/97
13.35.55 ICMP_UNREACH[ICMP_UNREACH_PORT](bad port)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 84.7.216.22 RECV/70
13.36.17 ICMP_UNREACH[ICMP_UNREACH_PORT](bad port)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 58.50.13.132 RECV/70
13.36.34 ICMP_UNREACH[ICMP_UNREACH_PORT](bad port)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 151.6.121.86 RECV/70
13.38.49 ICMP_UNREACH[ICMP_UNREACH_HOST](bad host)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 82.57.70.129 RECV/70
13.38.54 ICMP_UNREACH[ICMP_UNREACH_PORT](bad port)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 83.184.191.62 RECV/105
13.38.58 ICMP_UNREACH[ICMP_UNREACH_HOST](bad host)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 201.26.47.93 RECV/70
13.39.01 ICMP_UNREACH[ICMP_UNREACH_PORT](bad port)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 81.173.155.32 RECV/70
13.39.02 ICMP_UNREACH[ICMP_UNREACH_PORT](bad port)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 82.60.39.116 RECV/102
13.39.06 ICMP_UNREACH[ICMP_UNREACH_PORT](bad port)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 219.121.145.148 RECV/105
13.40.05 ICMP_UNREACH[ICMP_UNREACH_HOST](bad host)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 220.80.222.109 RECV/70
13.40.09 ICMP_UNREACH[ICMP_UNREACH_PORT](bad port)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 218.242.1.64 RECV/105
13.40.15 ICMP_UNREACH[ICMP_UNREACH_PORT](bad port)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 172.206.91.55 RECV/70
13.40.26 ICMP_UNREACH[ICMP_UNREACH_PORT](bad port)|RT:9|No.2 ICMP
RulesSYSTEM
2 Deny SYSTEM In 192.168.2.2 84.56.242.119 RECV/105
13.40.33 ICMP_UNREACH[ICMP_UNREACH_PORT](bad port)|RT:9|No.2 ICMP
RulesSYSTEM
---
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Virus Database (VPS): 0615-2, 12/04/2006
Controllato il: 13/04/2006 13.50.14
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