Security Basics mailing list archives

Re: how to find a static IP


From: Jared Curtis <jared () w00ttech com>
Date: Tue, 14 Jul 2009 11:10:34 -0700

You can use nmap.
nmap 10.0.0.0/8
nmap 172.16.0.0/12
nmap 192.168.0.0/16

This is going to take a long time.

What I've done before is plug my interface directly into the interface
in question, while running a sniffer such as wireshark or tcpdump.
What generally happens is when the interface changes state the server
will start to send out arp requests.

If you're using a manged switch you can check the arp table of the
switch for the address.  Using a Cisco switch you can do something
like this;

sh mac address-table  -- to find the mac address if you don't know it
sh arp | inc mac.of.interface

On Tue, Jul 14, 2009 at 8:45 AM, redhavoc<redhavoc () yahoo co uk> wrote:

Hello people,

I have inherited a new SUN server, and while running the sys-unconfig command I have sort of messed it up. I know it 
has an ethernet management port configured with a static IP, but I do not know this IP.

My idea was to connect this server and a computer on to a switch, boot a linux and port scan every internet address. 
Since its a private lan I would not be bothering anyone else. Since there is no dhcp and I want no routing I started 
the ethernet using
ifconfig eth0 1.1.1.1 netmask 0.0.0.0 up
The device started, but when I use nmap to scan IPs it does not know how to route packets.

So the question is ... how do I scan every possible address in a private network. Also, is there a better way to find 
this static IP ?

Regards
Nick





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------------------------------------------------------------------------
Securing Apache Web Server with thawte Digital Certificate
In this guide we examine the importance of Apache-SSL and who needs an SSL certificate.  We look at how SSL works, how 
it benefits your company and how your customers can tell if a site is secure. You will find out how to test, purchase, 
install and use a thawte Digital Certificate on your Apache web server. Throughout, best practices for set-up are 
highlighted to help you ensure efficient ongoing management of your encryption keys and digital certificates.

http://www.dinclinx.com/Redirect.aspx?36;4175;25;1371;0;5;946;e13b6be442f727d1
------------------------------------------------------------------------


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