Dunque la configurazione di default del router dovrebbe avere tutte le porte in uscita aperte e in entrata chiuse infatti:
se invece faccio la scansione dell'ip esterno con il quale vengo riconosciuto :
oppure :
Come mai...è normale? Io vorrei chiudere tutto in entrata e uscita e permettere solo il traffico in risposta....come devo fare??
Codice:
[ubermensch@tux-devil ~]$ sudo nmap -PN localhost
Starting Nmap 4.76 ( http://nmap.org ) at 2009-04-06 21:14 CEST
All 1000 scanned ports on localhost.localdomain (127.0.0.1) are closed
Nmap done: 1 IP address (1 host up) scanned in 0.80 seconds
Codice:
[ubermensch@tux-devil ~]$ sudo nmap -PN 79.**.3*.62
Password:
Starting Nmap 4.76 ( http://nmap.org ) at 2009-04-06 21:22 CEST
Interesting ports on host**-**-dynamic.19-79-r.retail.telecomitalia.it (79.**.**.62):
Not shown: 997 closed ports
PORT STATE SERVICE
23/tcp open telnet
53/tcp open domain
5000/tcp open upnp
Nmap done: 1 IP address (1 host up) scanned in 2.42 seconds
[ubermensch@tux-devil ~]$
Codice:
[ubermensch@tux-devil ~]$ sudo nmap -PN 192.168.0.1
Password:
Starting Nmap 4.76 ( http://nmap.org ) at 2009-04-06 21:58 CEST
Interesting ports on 192.168.0.1:
Not shown: 996 closed ports
PORT STATE SERVICE
23/tcp open telnet
53/tcp open domain
80/tcp open http
5000/tcp open upnp
MAC Address: 00:22:3F:6B:C7:64 (Netgear)
Nmap done: 1 IP address (1 host up) scanned in 1.45 seconds
[ubermensch@tux-devil ~]$