Re: Scanning Class A network

From: R. DuFresne (dufresne_at_sysinfo.com)
Date: 10/24/05

  • Next message: Steve Micallef: "Re: Scanning Class A network" 
    Date: Mon, 24 Oct 2005 16:19:57 -0400 (EDT)
To: tarunthenut@gmail.com

    -----BEGIN PGP SIGNED MESSAGE-----
    Hash: SHA1

    On Mon, 24 Oct 2005 tarunthenut@gmail.com wrote:

    > Hello All,
    > Recently I was given a task to carry out a port scan of an entire valid
    > Class A range (Dont ask me what the huge pool of valid IP's was for :) ).
    > The scan needed to be carried out externally, and not from within the
    > network to identify hosts and ports exposed to the Internet.
    > The problem compounded cause of the following limitations :
    > 1. ICMP was not allowed in the network
    > 2. The IP range was to be scanned every month for the entire port range fro=
    > m
    > 1-65535 for TCP & UDP
    > After searching for a suitable scanner which could scan such a large range
    > in reasonable time, I could think of only nmap, nessus, superscan and ISS.
    > But because of the limitations stated above,all the tools took a huge
    > amount of time (ran into month).
    > I have struggled with options within the tools, tried configurable
    > parameters (host time out, parallelism, RTT etc) and divided into smaller
    > class C networks and scanned.but still the scan seems to take ages even if
    > it is
    > Any advise would be welcome :)

    Once you have identified the systems in question, you might want to break
    the scan down into smaller series of scans from say a few boxen dedicated
    to this task, such that you are feeding the scanner<s> smaller address
    space so they can then slice and cice through in a quicker manner then a
    sinlge large scan. Also, you might wish to evaluate hping2, you do not
    mention it in the list of off the top of yer head tools that might work
    for this task.

    Thanks,

    Ron DuFresne
    - --
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
             admin & senior security consultant: sysinfo.com
                             http://sysinfo.com
    Key fingerprint = 9401 4B13 B918 164C 647A E838 B2DF AFCC 94B0 6629

    ...We waste time looking for the perfect lover
    instead of creating the perfect love.

                     -Tom Robbins <Still Life With Woodpecker>
    -----BEGIN PGP SIGNATURE-----
    Version: GnuPG v1.2.4 (GNU/Linux)

    iD8DBQFDXUHwst+vzJSwZikRAl2pAJoC7fT6tKfIY0rmRE/QQma3t3UwjQCcDVji
    1Oozt6bOK/qVA+71CBcbJ1w=
    =t4HN
    -----END PGP SIGNATURE-----

    ------------------------------------------------------------------------------
    Audit your website security with Acunetix Web Vulnerability Scanner:

    Hackers are concentrating their efforts on attacking applications on your
    website. Up to 75% of cyber attacks are launched on shopping carts, forms,
    login pages, dynamic content etc. Firewalls, SSL and locked-down servers are
    futile against web application hacking. Check your website for vulnerabilities
    to SQL injection, Cross site scripting and other web attacks before hackers do!
    Download Trial at:

    http://www.securityfocus.com/sponsor/pen-test_050831
    -------------------------------------------------------------------------------

  • Next message: Steve Micallef: "Re: Scanning Class A network"

    Relevant Pages

    • RE: Nessus 3.0 released
      ... > does not imply a scanner which is N times faster. ... Audit your website security with Acunetix Web Vulnerability Scanner: ... Hackers are concentrating their efforts on attacking applications on ... Up to 75% of cyber attacks are launched on shopping carts, ...
      (Pen-Test)
    • RE: [lists] What ever happened to the Netbios share scanner utilities?
      ... Audit your website security with Acunetix Web Vulnerability Scanner: ... Hackers are concentrating their efforts on attacking applications on your ... Up to 75% of cyber attacks are launched on shopping carts, forms, ...
      (Pen-Test)
    • Re: Scanning Class A network
      ... > Recently I was given a task to carry out a port scan of an entire valid ... > Audit your website security with Acunetix Web Vulnerability Scanner: ... Cross site scripting and other web attacks before hackers do! ...
      (Pen-Test)
    • Re: Pen test, tcp/1404 found - advice needed
      ... Mr seKurity Wizard next time try searching for the port number on the ... > Audit your website security with Acunetix Web Vulnerability Scanner: ... Cross site scripting and other web attacks before hackers do! ...
      (Pen-Test)
    • RE: Vuln Scanner
      ... There have been some free scanner projects that have come ... > other vulnerability scanner to compare the output. ... > Audit your website security with Acunetix Web Vulnerability Scanner: ... Up to 75% of cyber attacks are launched on shopping ...
      (Pen-Test)