Home page logo
/

bugtraq logo Bugtraq mailing list archives

Re: Hidden sniffer on unplumb'ed interface on Solaris
From: George Ellenburg <gellenburg () FREEDOM NET>
Date: Fri, 5 Jan 2001 16:47:19 -0500

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

On Friday 05 January 2001 00:40, you streamed these bits across the ether:
After reading the following article
(http://www.enteract.com/~robt/Docs/Howto/Sun/sniffer-trick.txt) by Rob
Thomas, it was brought to my attention that a sniffer can be silently
sitting on an unplumb'ed interface on Solaris. Not only is this dangerous
for large networks, it is often hard to find. Has anyone ever contacted
Sun about this potential problem...I'm fixing to try this on Solaris 8 to
determine if the problem still exists.

Robert

I don't actually consider this to be a problem. This is how some network 
IDSes are able to work (RealSecure for one) and can avoid all risk of IP 
based attacks (since there's no ipaddr on the if).

But, the interfaces are able to found, you just need to look for the MAC 
address and not the IP. ;-) Checking the ARP tables of your switches and 
routers should bring a rogue interface that doesn't have an ipaddr assigned 
to it.

Regards,

George Ellenburg
- -- 
PGP Preferred for communication. Please use the attached public key when 
sending me Email. Unencrypted messages are readable by third-parties. If 
you don't see the need for encrypting your Email, ask yourself why 
correspondence is mailed in envelopes instead of written on postcards. 
Privacy is a right, not a privilege! If we don't exercise our rights to 
privacy, they will soon be gone.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.0.4 (GNU/Linux)
Comment: For info see http://www.gnupg.org

iD8DBQE6VkDwFaIkZF64J+8RAlKgAKCska6RFEVf0ayOovuZRylVIK+vbQCffqRC
+aM03PMxVjKCazIv0RZtWo4=
=tc/O
-----END PGP SIGNATURE-----


  By Date           By Thread  

Current thread:
[ Nmap | Sec Tools | Mailing Lists | Site News | About/Contact | Advertising | Privacy ]