Penetration Testing mailing list archives
Re: Promiscuous Mode
From: Muhammad Farooq-i-Azam <lists () chase org pk>
Date: Thu, 20 Mar 2008 19:03:26 +0000
On Wed, Mar 19, 2008 at 02:51:20PM +0100, Simon Templar wrote: # Hello everybody, # # I have a question concerning "Promiscuous Mode", I know what it is, # but I would like to know exactly what is happening behind the scenes # when I change my NIC to this mode In normal mode of operation, an NIC compares the destination MAC address of an incoming packet to its own and passes it onto the operating system only if it matches its own. Otherwise, the packet is dropped. However, when put into promiscuous mode of operation, the NIC stops this comparison and just grabs ALL the incoming packets and passes them to the kernel. # # For example: what is the technicality in writing the command: # ifconfig eth0 promisc? The interface is switched into promiscuous mode and it starts receiving all the packets. However, you need an application like ipgrab, tcpdump, wireshark, etc. to grab, disect and display the packet contents for you. # # Your help is so much appreciated. # Best regards. # # Best wishes -- Muhammad Farooq-i-Azam lists () chase org pk http://www.chase.org.pk/ {(((((( /_ _ ) ( . . ) ( / ) ----------------------------------oOOo------------oOOo---------------- Every word is like an unnecessary stain on silence and nothingness. -- Beckett ---------------------------------------------------------------------- ------------------------------------------------------------------------ This list is sponsored by: Cenzic Need to secure your web apps NOW? Cenzic finds more, "real" vulnerabilities fast. Click to try it, buy it or download a solution FREE today! http://www.cenzic.com/downloads ------------------------------------------------------------------------
Current thread:
- Re: Promiscuous Mode, (continued)
- Re: Promiscuous Mode don bailey (Mar 20)
- Re: Promiscuous Mode Amar Kulo (Mar 20)
- Re: Promiscuous Mode Morgan Reed (Mar 20)
- Re: Promiscuous Mode Robin Sheat (Mar 23)
- Re: Promiscuous Mode Muhammad Farooq-i-Azam (Mar 25)
- Re: Promiscuous Mode Robin Sheat (Mar 25)
- Re: Promiscuous Mode Muhammad Farooq-i-Azam (Mar 25)
- Re: Promiscuous Mode Robin Sheat (Mar 23)
- RE: Promiscuous Mode Richard C Lewis (Mar 20)