Re: Choosing appropiate src ip address

[kx <kxmail () gmail com>]

3.81 is a little old. In version 3.84, nmap started using dnet and the
whole infrastructure was overhauled.  I highly recommend grabbing
nmap-4.20ALPHA4 from http://www.insecure.org/nmap/dist/?C=M&O=D

Let us know if you still have the problem.

Cheers,
  kx

On 7/9/06, SuD <sud_NOSPAM () latinsud com> wrote:
> Hi, i'm using nmap 3.81 (debian sarge, kernel 2.6.15.6) and i have a
> problem when i have several ip addresses on interface.
>
> For example, if i have this configuration:
>
> eth1      Link encap:Ethernet
>          inet addr:192.168.0.33  Bcast:192.168.0.255  Mask:255.255.255.0
>
> eth1:1    Link encap:Ethernet
>          inet addr:192.168.1.36  Bcast:192.168.1.255  Mask:255.255.255.0
>
> And i try nmap -n -sP 192.168.1.1, i get no reply, nmap cannot ping it.
> When i take a closer look with tcpdump i see that it is sending from
> 192.168.0.33 to 192.168.1.1, which won't work, as it should have choosen
> 192.168.1.36 as src address.
>
> # tcpdump -n
> 17:10:38.059336 IP 192.168.0.33 > 192.168.1.1: ICMP echo request, id
> 32944, seq 21607, length 8
> 17:10:38.059507 IP 192.168.0.33.37145 > 192.168.1.1.80: . ack 2472138014
> win 4096
>
> Shouldn't nmap autochoose interface and/or src address? Is my version
> too old?
> Thanks
>
>
>
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