[Snort-users] Linux and switch problem???

Daniel Curry dcurry at ...5551...
Fri Jul 19 09:58:04 EDT 2002


Twig,
  Thank you for your help. Here are teh answers 
to your questions?


twig les wrote:
> 
> What kind of switch? 
 Extreme summit 48
 We will be installing onto a Cisco 2912.
> What did you change in the sewitch config for this project? 
Mirror port

> What else is the Linux box doing?
Just running snort.

> Simply putting an interface into
> promiscious mode can't affect a switch.  If you've
> spanned a Cisco 29xx or 35xx, then you may be in
> trouble, but make sure you aren't being scapegoated.
> That's happened to me before ("Your sniffer is slowing
> the network down!!" <huh?>)
> 
> --- Daniel Curry <dcurry at ...5551...> wrote:
> >
> >      I have configure my eth1 as following.
> > eth1      Link encap:Ethernet  HWaddr
> > 00:50:8B:E3:99:7C
> >           UP BROADCAST RUNNING PROMISC MULTICAST
> > MTU:1500  Metric:1
> >           RX packets:0 errors:0 dropped:0 overruns:0
> > frame:0
> >           TX packets:0 errors:0 dropped:0 overruns:0
> > carrier:0
> >           collisions:0 txqueuelen:100
> >           RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)
> >           Interrupt:11 Base address:0xc000
> >
> >
> > However I am getting reports from our network folks
> > that "this is
> > bringing the switch down?"
> >
> >
> >   My ifcg-eth1 file looks like this.
> > DEVICE=eth1
> > BOOTPROTO=static
> > ONBOOT=yes
> >
> >  Is there anything wrong with my configuration?
> >
> > Please reply directly. I received snort email via
> > "digest" mode.
> >
> > Thank you.
> > --
> > Daniel Curry
> > PGP AD5A 96DC 7556 A020 B8E7  0E4D 5D5E 9BA5 C83E
> 8C92> begin:vcard
> > n:Curry;Daniel
> > tel;fax:650-232-3200
> > tel;work:650-232-4006
> > x-mozilla-html:FALSE
> > url:www.corio.com
> > org:Corio Inc
> > adr:;;959 Skyway Road  Suite 100;San
> > Carlos;California;94070;USA
> > version:2.1
> > email;internet:dcurry at ...5551...
> > title:Sr. Information Security Eng.
> > x-mozilla-cpt:;-5312
> > fn:Daniel Curry
> > end:vcard
> >
> 
> =====
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-- 
Daniel Curry
DIRECT 650-232-4006
FAX 650-232-3200
PGP AD5A 96DC 7556 A020 B8E7  0E4D 5D5E 9BA5 C83E 8C92
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