[Snort-users] Snort 2.9, RHEL 5 and afpacket DAQ

beenph beenph at ...11827...
Mon Oct 18 15:22:52 EDT 2010


My be would be that your kernel does not have built-in support for
mmapped socket_io (which is built-in since 2.6.34ishh) if i remember..

What is your kernel version?

-elz


On Mon, Oct 18, 2010 at 2:28 PM, Ralf Spenneberg <ralf at ...8096...> wrote:
> Hi,
>
> I am playing around with Snort 2.9.0 on RHEL 5. Using the DAQ libraries
> with libpcap works fine. But the afpacket daq module always bails on
> loading:
>
> # snort --daq afpacket
> Running in packet dump mode
>
>        --== Initializing Snort ==--
> Initializing Output Plugins!
> afpacket DAQ configured to passive.
> Acquiring network traffic from "eth0".
>
>        --== Initialization Complete ==--
>
>   ,,_     -*> Snort! <*-
>  o"  )~   Version 2.9.0 (Build 68)
>   ''''    By Martin Roesch & The Snort Team:
> http://www.snort.org/snort/snort-team
>           Copyright (C) 1998-2010 Sourcefire, Inc., et al.
>           Using libpcap version 1.1.1
>           Using PCRE version: 6.6 06-Feb-2006
>
> Commencing packet processing (pid=3329)
> Decoding Ethernet
> ERROR: Can't start DAQ (-1) - create_rx_ring: Couldn't create kernel RX
> ring on packet socket: Cannot allocate memory!
> Fatal Error, Quitting..
>
>
> It works fine on Fedora 13. I have searched the mailing lists but have
> not found any clue. Does the kernel on RHEL 5 (2.6.18) not provide the
> necessary interface?
>
> It would be fine if stated in the README or FAQ but I have not found
> anything.
>
> Any hints, clues, advices?
>
> Kind regards,
>
> Ralf
>
>
>
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