Member Avatar for arunmagar

Hi,
I am working on project Signature Based IDS.
For that reason I need to install libpcap on my machine.
I have problem in installing.I have libpcap source directory.
as I give command
# ./configure
I found following error
configure: error: Your operating system's lex is insufficient to compile
libpcap. flex is a lex replacement that has many advantages, including
being able to compile libpcap. For more information, see
http://www.gnu.org/software/flex/flex.html .

please help in installing libpcap.Step by step.
Thanks in advance.

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Member Avatar for sknake

Is there any reason you're trying to build it from source rather than installing it from the package repository?

sk:~# apt-cache search libpcap | grep ^libp
libpcap-dev - Development library for libpcap (transitional package)
libpcap-ruby1.8 - Ruby interface for the libpcap packet capture library
libpcap0.7 - System interface for user-level packet capture
libpcap0.7-dev - Development library and header files for libpcap 0.7
libpcap0.8 - System interface for user-level packet capture
libpcap0.8-dev - Development library and header files for libpcap 0.8
libpcap0.9 - Dummy package, can be safely removed
libpcap0 - System interface for user-level packet capture.
sk:~# apt-get install libpcap-dev

You could just install it with libaptituted unless you *want* to build it from source. You could also use aptitude to build from source:

apt-get --only-source build-dep libpcap-dev 
apt-get --only-source -b source libpcap-dev 
ls *.deb
dpkg -i libpcap*dev*deb
Member Avatar for arunmagar

I don't have internet connection that is why I am installing from source instead of repository.As I get internet connection I will try as you said.
I think what ever you have given those are commands which I have to run.
I am new to linux.
Thank you sknake.

Member Avatar for sknake

You're welcome. Let me know if you have any problems in getting libpcap installed and we'll go from there

Member Avatar for sandeep.xlent

when i install libpcap these errors are cmng PLS HELP ME
Reading package lists... Error!
E: Encountered a section with no Package: header
E: Problem with MergeList /var/lib/apt/lists/in.archive.ubuntu.com_ubuntu_dists_natty_main_binary-i386_Packages
E: The package lists or status file could not be parsed or opened.

Member Avatar for JustinXu

could you give me the configuration? i just configured the libpcap include, i can't do well.

Member Avatar for Web Spider

Hi arunmagar, I don't know is it better to talk with you here or not, because I could not managed to find your mailing address. As I saw you were working on signature based IDS, I am also working on it but I have been stuck somewhere. I hope you are going to help to get me out of this

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