sniffer in redhat 9

Gould, Aaron aaron.gould at ngc.com
Wed Oct 25 20:08:56 UTC 2006


opps.  thanks steve for the gracious reminder  :)
 
sometimes i forget to do the basic reading first
 
Aaron

________________________________

From: redhat-list-bounces at redhat.com on behalf of Serge Dubrouski
Sent: Wed 10/25/2006 7:05 AM
To: General Red Hat Linux discussion list
Subject: Re: sniffer in redhat 9



There is one really good command in Linux/UNIX called man :-)

man tcpdump

.....
Under Linux:
              You  must  be  root or tcpdump must be installed setuid to root
              (unless your distribution has a kernel that supports capability
              bits  such  as  CAP_NET_RAW  and code to allow those capability
              bits to be given to particular accounts and to cause those bits
              to  be  set  on a user\u2019s initial processes when
they log in, in
              which case you  must have CAP_NET_RAW in order to  capture  and
              CAP_NET_ADMIN  to  enumerate network devices with, for example,
              the -D flag).
............

On 10/25/06, Gould, Aaron <aaron.gould at ngc.com> wrote:
> i was doing it as "aaron", after su'ing to root, tcpdump works "tcpdump: listening on eth0".  i added /usr/sbin/ to my "aaron" path, and now when i run tcpdump it says "tcpdump: no suitable device found"  any ideas?
>
> also, is there a nicer graphical sniffer built-into redhat?  if not perhaps someone can suggest the best and newest one to download with the most possible decodes for protocols such as h.323 and sip for VoIP
>
> thanks
> Aaron
>
> ________________________________
>
> From: redhat-list-bounces at redhat.com on behalf of mark
> Sent: Tue 10/24/2006 5:46 PM
> To: General Red Hat Linux discussion list
> Subject: Re: sniffer in redhat 9
>
>
>
> Serge Dubrouski wrote:
> > yum install tcpdump
>
> Or he can install it from the CD.... Though there is one question:
> Aaron, are you doing it as root, or as a user? I ask that, because users
> are frequently set up without /sbin and /usr/sbin in their path.
>
>        mark
> >
> > Of course if you have yum configured.
> >
> > On 10/24/06, Gould, Aaron <aaron.gould at ngc.com> wrote:
> >> i type tcpdump and it says "bash: tcpdump: command not found"  where
> >> would i go to execute it?  also where should i go to check if ethereal
> >> is on my redhat box?
> >>
> >> Aaron
> >>
> >> ________________________________
> >>
> >> From: redhat-list-bounces at redhat.com on behalf of alan
> >> Sent: Tue 10/24/2006 3:08 PM
> >> To: General Red Hat Linux discussion list
> >> Subject: Re: sniffer in redhat 9
> >>
> >>
> >>
> >> On Tue, 24 Oct 2006, Serge Dubrouski wrote:
> >>
> >> > tcpdump
> >>
> >> Ethereal might have been in that version as well.  I would have to look.
> >>
> >> >
> >> > On 10/24/06, Gould, Aaron <aaron.gould at ngc.com> wrote:
> >> >> is there a built-in packet sniffer in redhat 9?
> >> >>
> >> >> Aaron
> >> >>
> >> >> --
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> >> >>
> >> >
> >> >
> >>
> >> --
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