Libnet
performance of libnet-based tools Feb 26 2005 07:07AM
Steven Alexander Jr. (alexander steven sbcglobal net) (4 replies)
I've been experimenting with a few different
libnet-based tools such as Packit and ISIC. If I try
to generate a high-volume of traffic using these
tools, with various options and protocols, the error
rate is extremely high. ISIC says:

Failed to send packet: No buffer space available

The synflood tool that comes as a libnet sample works
for several seconds and begins reporting:

libnet_write: libnet_write_raw_ipv4(): -1 bytes
written (Host is down)

I'm not sure where the problem lies and I would love
to hear any suggestions. I'm using a 3.0Ghz P4 with
1.5G RAM and a $20 Linksys FA311 card on FreeBSD 5.3
and a 1.3GHZ AMD laptop with 512MB RAM and a built-in
Realtek RTL8139C+ card on FreeBSD 4.9.

Do I need to tune the OS? Do I need a better network
card?

I'd like to be able to perform various stress testing
exercises on my test network.

Thanks.

-Steven

[ reply ]
Re: performance of libnet-based tools Mar 01 2005 09:29PM
Aaron Turner (aturner pobox com)
Re: performance of libnet-based tools Mar 01 2005 08:55PM
Mark Atkinson (darkmark filament org)
Re: performance of libnet-based tools Mar 01 2005 07:40PM
Matt Bing (matt mutedwarf com)
Re: performance of libnet-based tools Mar 01 2005 07:23PM
Frédéric Raynal (frederic raynal security-labs org)


 

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