看板FB_security
標 題Re[2]: nmap not scanning networks?
發信站NCTU CSIE FreeBSD Server (Thu Jun 17 11:18:53 2004)
轉信站ptt!FreeBSD.csie.NCTU!not-for-mail
OE> Chuck Swiger wrote:
>> Alex Povolotsky wrote:
>>> Attempt to scan a network with any method except plain ping results in
>>> an error:
>>> truss nmap -sT -p 21 '172.19.17.*'
>>
>> I can confirm the problem, anyway, although I'm not sure it's germane
>> to freebsd-security. :-)
>>
>>> [...]
>>> sendto(0x4,0x8094200,0,0x0,{ AF_INET 172.19.17.0:0 },0x10) ERR#49
>>> 'Can't assign requested address'
>>> [...]
>>> What's strange that man on send(2) doesn't state that EADDRNOTAVAIL
>>> can ever be returned from sendto().
OE> Have you checked the firewall rules and routing tables on your machines?
OE> Do you have the same problems with non-private IP ranges?
I had the same problem because my host IP address was inclusive in the
IP range. Make sure your host IP is not inclusive and see the result.
OE> -Oliver
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