Re: Packet capturing, iptables and eth0 vs. dummy0

From: DervishD (lkml_at_dervishd.net)
Date: 11/18/04

  • Next message: Chris Ross: "Re: [PATCH] Remove OOM killer from try_to_free_pages / all_unreclaimable braindamage" 
    Date:	Thu, 18 Nov 2004 00:14:01 +0100
To: Martin Josefsson <gandalf@wlug.westbo.se>

        Hi Martin :)

     * Martin Josefsson <gandalf@wlug.westbo.se> dixit:
    > > Is is normal? Is normal that tcpdump shows packets before they
    > > enter the filter when the interface is a real one (eth0) but no when
    > > you access through a dummy interface or localhost, or am I missing
    > > anything?
    > Try sniffing on the 'lo' interface instead of 'dummy0' since all packets
    > generated by the local machine destined for the local machine goes via
    > the ´lo' interface. ipaddresses looks like they belong to interfaces but
    > that's not the case with linux, they belong to the machine.

        That seemed to be the problem, thanks :)))

        Raúl Núñez de Arenas Coronado 

    -- 
Linux Registered User 88736
http://www.dervishd.net & http://www.pleyades.net/
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/
  • Next message: Chris Ross: "Re: [PATCH] Remove OOM killer from try_to_free_pages / all_unreclaimable braindamage"

    Relevant Pages

    • RE: dell broadcom nic & fbsd 7.1 AMD64
      ... I ran that on a local machine and it hung up the interface, ... We have several Dell 1950/2950 with fbsd 7.0 and 7.1 that have had no problems with Broadcom. ...
      (freebsd-questions)
    • Re: [Full-disclosure] Promiscious Device Detection
      ... Chkrootkit, though, will check the local machine ... for a promisc interface, as well as other signs of possible badness. ... you can use things like antisniff to spoof ARP packets and see what answers to ARP but not IP -- but that'll do you no good for a physically isolated tap -- like what happens when you use a passive fiber splitter and two cards utilizing the receive side only. ... a really well firewalled machine will appear no different than one running a promisc. ...
      (Full-Disclosure)
    • RE: dell broadcom nic & fbsd 7.1 AMD64
      ... I ran that on a local machine and it hung up the interface, requiring a warm reboot. ...
      (freebsd-questions)
    • How to obtain the IP address of the interface...
      ... How to obtain the IP address of the interface that is connected to the ... I´m using the code below to get IP address of the local machine: ... string HostName = Dns.GetHostName; ... address that I´m using to connect to the Internet, but how to do this using ...
      (microsoft.public.dotnet.languages.csharp)
    • Re: arm-lh7a40x IDE support in 2.6.6
      ... I need to be able to poll the interface ... is selectproc a pre-select procedure or ... pre-select but you can change it to be substitute if you need ... send the line "unsubscribe linux-kernel" in ...
      (Linux-Kernel)