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nmap - Failed to open device eth0
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GoLaB
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Joined: 14 Jul 2004
Posts: 36

PostPosted: Thu Dec 29, 2005 10:22 am    Post subject: nmap - Failed to open device eth0 Reply with quote

Witam...
Code:

localhost ~ # nmap -sS 192.168.0.1

Starting Nmap 3.95 ( http://www.insecure.org/nmap/ ) at 2005-12-28 22:26 CET
dnet: Failed to open device eth0
QUITTING!


Code:

localhost ~ # ifconfig eth0
eth0      Link encap:Ethernet  HWaddr 00:00:00:00:00:00 
          inet addr:192.168.0.50  Bcast:192.168.0.255  Mask:255.255.255.0
          UP BROADCAST NOTRAILERS RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:14055 errors:0 dropped:0 overruns:0 frame:0
          TX packets:12256 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:10273786 (9.7 Mb)  TX bytes:2116383 (2.0 Mb)
          Interrupt:11 Base address:0xc000


Niewiem dlaczego ale nmap nie moze dostac sie do eth0, dlaczego tak sie dzieje ?

Pozdrawiam

ps. adres Mac specjalnie zmienilem
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nelchael
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Joined: 20 Mar 2004
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PostPosted: Thu Dec 29, 2005 10:52 am    Post subject: Reply with quote

A po co zmieniales MAC? To bez sensu :)

Co do problemu: `lspci | grep Eth`, pokaz fragment konfiguracji jadra odpowiedzialny za ta sieciowke oraz /etc/conf.d/net
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Zwierzak
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PostPosted: Thu Dec 29, 2005 11:05 am    Post subject: Re: nmap - Failed to open device eth0 Reply with quote

GoLaB wrote:
Code:

--- >8 cut ---
          inet addr:192.168.0.50  Bcast:192.168.0.255  Mask:255.255.255.0
--- >8 cut ----

Bo twój adres to 192.168.0.50 a nie 192.168.0.1, który zresztą pewnie nie istnieje w sieci
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GoLaB
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Joined: 14 Jul 2004
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PostPosted: Thu Dec 29, 2005 11:15 am    Post subject: Reply with quote

Code:
 localhost ~ # lspci | grep Eth
0000:02:0f.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10)

Code:
localhost ~ # cat /etc/conf.d/net
# This blank configuration will automatically use DHCP for any net.*
# scripts in /etc/init.d.  To create a more complete configuration,
# please review /etc/conf.d/net.example and save your configuration
# in /etc/conf.d/net (this file :]!).



Code:

localhost ~ # ping 192.168.0.1
PING 192.168.0.1 (192.168.0.1) 56(84) bytes of data.
64 bytes from 192.168.0.1: icmp_seq=1 ttl=128 time=15.5 ms
64 bytes from 192.168.0.1: icmp_seq=2 ttl=128 time=0.395 ms
64 bytes from 192.168.0.1: icmp_seq=3 ttl=128 time=0.411 ms
64 bytes from 192.168.0.1: icmp_seq=4 ttl=128 time=0.392 ms
64 bytes from 192.168.0.1: icmp_seq=5 ttl=128 time=0.391 ms
64 bytes from 192.168.0.1: icmp_seq=6 ttl=128 time=0.428 ms
64 bytes from 192.168.0.1: icmp_seq=7 ttl=128 time=0.421 ms
64 bytes from 192.168.0.1: icmp_seq=8 ttl=128 time=0.402 ms
64 bytes from 192.168.0.1: icmp_seq=9 ttl=128 time=0.412 ms

--- 192.168.0.1 ping statistics ---
9 packets transmitted, 9 received, 0% packet loss, time 8000ms
rtt min/avg/max/mdev = 0.391/2.090/15.560/4.762 ms

jednak istnieje, ale problem wystepuje przy skanowaniu dowolnego komputera w sieci lokalnej
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Kajan
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Joined: 23 Dec 2004
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PostPosted: Thu Dec 29, 2005 11:24 am    Post subject: Reply with quote

Zobacz z dodatkowym parametrem:
Code:

nmap -P0 -sS 192.168.0.1



Pozdro
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GoLaB
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PostPosted: Thu Dec 29, 2005 12:37 pm    Post subject: Reply with quote

Kajan wrote:
Zobacz z dodatkowym parametrem:
Code:

nmap -P0 -sS 192.168.0.1


Pozdro

ciagle to samo
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