Re: Problem with ethercard and promiscuous mode

[Jim Patterson <jim_patterson () comcast net>]

Sorry it took so long to get back.
The cards are listed as
3Com Corporation 3c905C-TX/TX-M [Tornado] (rev 78)
3Com Corporation 3c905C-TX/TX-M [Tornado] (rev 74)

I'm not sure which one is the culprit, but I am going to guess that rev 
74 is .  If someone knows how I could translate the information between 
lspci output and ifconfig.  I'd appreciate the info.

Josh Berry wrote:

> What kind of network cards are you using?  I have had this same problem
> with some 3Com cards.
>
>  
>
> > On my snort system I have two ethernet cards and was attempting to
> > monitor both outside of the firewall and inside of the firewall. When I
> > monitor with eth0 I don't have a problem, but eth1 appears to refuse to
> > go into promiscuous mode.  I have run "ifconfig eth1 promisc up" and it
> > doesn't seem to have any affect except on ifconfig which returns that it
> > is in PROMISC.  I test it by running tcpdump and seeing if I can see
> > traffic on a hub, but with the card in eth1 it doesn't appear to work.
> > if I switch and use the card designated eth0 , connected with the same
> > cable, then I can see the traffic.  I believe that the testing has ruled
> > out the hub or the cable being the problem.  Both cards are the same,
> > just one of them appears not to be able to go into promiscuous mode.
> > Anyboy ran into a problem like this?  Any possible solutions?  Is it
> > really possible that I have a bad card and it won't go into promiscuous
> > mode?
> >
> >
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> >    
>
>
> Thanks,
> Josh Berry, CISSP
> CTO, VP of Product Development
> LinkNet-Solutions
> 469-831-8543
> josh.berry () linknet-solutions com
>
>
>
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>  



-------------------------------------------------------
This SF.Net email is sponsored by: IBM Linux Tutorials
Free Linux tutorial presented by Daniel Robbins, President and CEO of
GenToo technologies. Learn everything from fundamentals to system
administration.http://ads.osdn.com/?ad_id=1470&alloc_id=3638&op=click
_______________________________________________
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Go to this URL to change user options or unsubscribe:
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Snort-users list archive:
http://www.geocrawler.com/redir-sf.php3?list=snort-users