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<meta name="Author" content="Mike Schiffman">
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<title>Introduction</title>
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<br><b><font size=+2>2. Broad Overview</font></b>
<br>
<hr ALIGN=LEFT WIDTH="97%">
<p><font size=-1>Libnet is a simple C library. It is designed to
be small, efficient and easy to use. Libnet's main goal is portable
packet creation and injection. At the time this manual was written,
Libnet was in version 1.0.0 and had 15 different packet assemblers and
two types of packet injection, IP-layer and link-layer (more on those below).</font>
<p><font size=-1>By itself, libnet is moderately useful. It can build
and inject packets to the network. Libnet, however, has no provisions
for packet capture. For this, one must look to libpcap <a href="7.html">[1]</a>.
Together, libnet and libpcap are powerful tools available to the network
programmer.</font>
<p><font size=-1>Libnet 1.0.0 consists of about:</font>
<ul>
<li>
<font size=-1>7600 lines of code</font></li>
<li>
<font size=-1>33 source files</font></li>
<li>
<font size=-1>12 include files</font></li>
<li>
<font size=-1>50 some-odd functions</font></li>
</ul>
<p><br><font size=-1>This manual attempts to document as much of libnet
as possible, but is probably not complete. It assumes you have a
good working knowledge of C and the TCP/IP protocol suite, but since you're
already here, you probably have all of those tools.</font>
<br>
<hr ALIGN=LEFT WIDTH="97%">
<br><a NAME="s2.1"></a><b><font size=+2>2.1 Ports</font></b>
<br>
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<p><font size=-1>Libnet has been compiled and tested successfully on the
following platforms:</font>
<ul>
<li>
<font size=-1>OpenBSD 2.5, 2.4, 2.3, 2.2 (i386)</font></li>
<li>
<font size=-1>FreeBSD 3.3-STABLE, 3.2-RELEASE,
3.1-CURRENT, 3.0, 2.2 (i386)</font></li>
<li>
<font size=-1>NetBSD 1.3.2 (i386)</font></li>
<li>
<font size=-1>BSD/OS 3.x (i386)</font></li>
<li>
<font size=-1>BSDi
3.0 (i386)</font></li>
<li>
<font size=-1>Linux
2.2.x, 2.0.3x, 2.1.124 (i386, alpha) (libc: 2.4.x, glibc: 2.0.x)</font></li>
<li>
<font size=-1>Solaris 7
(SPARC, gcc 2.7.2[13], 2.8.2), 2.6 (SPARC, gcc 2.8.2), 2.5.x (SPARC, gcc
2.7.2[13])</font></li>
<li>
<font size=-1>IRIX
6.2</font></li>
<li>
<font size=-1>MacOS 5.3rhapsody
(powerpc)</font></li>
</ul>
<font size=-1>If your platform is not listed, don't despair.. It
might work! If it does, please drop me a line. If it doesn't
and you port libnet to your platform, please send me diffs!</font>
<p><font size=-1>Libnet is not as yet portable to Microsoft operating systems.</font>
<br>
<hr ALIGN=LEFT WIDTH="97%">
<br><a NAME="s2.2"></a><b><font size=+2>2.2 Getting Started</font></b>
<br>
<hr ALIGN=LEFT WIDTH="97%">
<p><font size=-1>Go get the library: <a href="http://www.packetfactory.net/libnet">http://www.packetfactory.net/libnet</a>.
Even if your operating system includes it, you might want to check and
make sure you have the most recent version of libnet. Libnet uses
GNU autoconf for precompilation configuration, to start it on its way,
simply type <tt>./configure. </tt>From there, you'll want to build
the library by running <tt>`make` </tt>in the same directory. If
there are any errors or warnings, please send them to <a href="mailto://mike@infonexus.com">mike@infonexus.com.</a></font>
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