看板FB_security
标 题Re: nmap not scanning networks?
发信站NCTU CSIE FreeBSD Server (Wed Jun 16 18:17:52 2004)
转信站ptt!FreeBSD.csie.NCTU!not-for-mail
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().
Have you checked the firewall rules and routing tables on your machines?
Do you have the same problems with non-private IP ranges?
-Oliver
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