SV: Security test of firewall dose not show UDP port 500 is open

["Martin Thor-Kristiansen" <mtk () mrc dk>]

This lead me back to the following question:
Why dose Nessus 2.x find the open port and Nessus 3.0 don't?

Best regards
 
Martin Thor-Kristiansen
Cisco CCSP, Microsoft MCSE
Chefkonsulent
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-----Oprindelig meddelelse-----
Fra: Daniel Lucq [mailto:daniel () scanit be] 
Sendt: 28. marts 2006 11:11
Til: pen-test () securityfocus com
Cc: Martin Thor-Kristiansen
Emne: Re: Security test of firewall dose not show UDP port 500 is open

Well, could be that the IKE service (if it is enabled) only responds to 
IKE handshake requests containing a supported IKE transform (or vendor 
ID, authentication type, etc.).

I would suggest using ike-scan to poke a bit at the target with 
different transforms etc.


Regards,
Daniel

mtk () mrc dk wrote:
> Hi all,
>
> We have been using Nessus for security scanning the Cisco Pix firewalls we install for our custemers. I have one 
> "old" repport showing ISAKMP UDM port 500 is open. The firewall isn't updated but now the port has disapeard fro the 
> new rapport?
> We have asked Cisco if the securiyt scanner is supposed to find UDP port 500 (I don't think so) and a CCIE from Cisco 
> have told us "no the port is hidden."
>
> I wonder how the port can be in the old repport?
>
> If any one has any input please let me know.
>
> Best regards,
>
> MTK
>
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