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              <p class="caption"><span class="caption-text">Table of Contents</span></p>
<ul class="current">
<li class="toctree-l1"><a class="reference internal" href="preface.html">Preface</a></li>
<li class="toctree-l1"><a class="reference internal" href="foundation.html">Chapter 1:  Foundation</a></li>
<li class="toctree-l1"><a class="reference internal" href="direct.html">Chapter 2:  Direct Links</a></li>
<li class="toctree-l1"><a class="reference internal" href="internetworking.html">Chapter 3:  Internetworking</a></li>
<li class="toctree-l1"><a class="reference internal" href="scaling.html">Chapter 4:  Advanced Internetworking</a></li>
<li class="toctree-l1"><a class="reference internal" href="e2e.html">Chapter 5:  End-to-End Protocols</a></li>
<li class="toctree-l1"><a class="reference internal" href="congestion.html">Chapter 6:  Congestion Control</a></li>
<li class="toctree-l1"><a class="reference internal" href="data.html">Chapter 7: End-to-End Data</a></li>
<li class="toctree-l1 current"><a class="current reference internal" href="#">Chapter 8: Network Security</a><ul>
<li class="toctree-l2"><a class="reference internal" href="security/problem.html">Problem: Security Attacks</a></li>
<li class="toctree-l2"><a class="reference internal" href="security/trust.html">8.1 Trust and Threats</a></li>
<li class="toctree-l2"><a class="reference internal" href="security/crypto.html">8.2 Cryptographic Building Blocks</a></li>
<li class="toctree-l2"><a class="reference internal" href="security/key-distro.html">8.3 Key Predistribution</a></li>
<li class="toctree-l2"><a class="reference internal" href="security/authentication.html">8.4 Authentication Protocols</a></li>
<li class="toctree-l2"><a class="reference internal" href="security/systems.html">8.5 Example Systems</a></li>
<li class="toctree-l2"><a class="reference internal" href="security/trend.html">Perspective: Blockchain and a Decentralized Internet</a></li>
</ul>
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<li class="toctree-l1"><a class="reference internal" href="applications.html">Chapter 9: Applications</a></li>
<li class="toctree-l1"><a class="reference internal" href="supplements.html">Emerging Topics</a></li>
<li class="toctree-l1"><a class="reference internal" href="README.html">About This Book</a></li>
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  <div class="section" id="chapter-8-network-security">
<h1>Chapter 8: Network Security<a class="headerlink" href="#chapter-8-network-security" title="Permalink to this headline">¶</a></h1>
<blockquote>
<div><p>It is true greatness to have in one the frailty of a man and the
security of a god.</p>
<p><em>—Seneca</em></p>
</div></blockquote>
<div class="toctree-wrapper compound">
<ul>
<li class="toctree-l1"><a class="reference internal" href="security/problem.html">Problem: Security Attacks</a></li>
<li class="toctree-l1"><a class="reference internal" href="security/trust.html">8.1 Trust and Threats</a></li>
<li class="toctree-l1"><a class="reference internal" href="security/crypto.html">8.2 Cryptographic Building Blocks</a><ul>
<li class="toctree-l2"><a class="reference internal" href="security/crypto.html#principles-of-ciphers">Principles of Ciphers</a></li>
<li class="toctree-l2"><a class="reference internal" href="security/crypto.html#secret-key-ciphers">Secret-Key Ciphers</a></li>
<li class="toctree-l2"><a class="reference internal" href="security/crypto.html#public-key-ciphers">Public-Key Ciphers</a></li>
<li class="toctree-l2"><a class="reference internal" href="security/crypto.html#authenticators">Authenticators</a></li>
</ul>
</li>
<li class="toctree-l1"><a class="reference internal" href="security/key-distro.html">8.3 Key Predistribution</a><ul>
<li class="toctree-l2"><a class="reference internal" href="security/key-distro.html#predistribution-of-public-keys">Predistribution of Public Keys</a></li>
<li class="toctree-l2"><a class="reference internal" href="security/key-distro.html#predistribution-of-secret-keys">Predistribution of Secret Keys</a></li>
<li class="toctree-l2"><a class="reference internal" href="security/key-distro.html#diffie-hellman-key-exchange">Diffie-Hellman Key Exchange</a></li>
</ul>
</li>
<li class="toctree-l1"><a class="reference internal" href="security/authentication.html">8.4 Authentication Protocols</a><ul>
<li class="toctree-l2"><a class="reference internal" href="security/authentication.html#originality-and-timeliness-techniques">Originality and Timeliness Techniques</a></li>
<li class="toctree-l2"><a class="reference internal" href="security/authentication.html#public-key-authentication-protocols">Public-Key Authentication Protocols</a></li>
<li class="toctree-l2"><a class="reference internal" href="security/authentication.html#secret-key-authentication-protocols">Secret-Key Authentication Protocols</a></li>
</ul>
</li>
<li class="toctree-l1"><a class="reference internal" href="security/systems.html">8.5 Example Systems</a><ul>
<li class="toctree-l2"><a class="reference internal" href="security/systems.html#pretty-good-privacy-pgp">Pretty Good Privacy (PGP)</a></li>
<li class="toctree-l2"><a class="reference internal" href="security/systems.html#secure-shell-ssh">Secure Shell (SSH)</a></li>
<li class="toctree-l2"><a class="reference internal" href="security/systems.html#transport-layer-security-tls-ssl-https">Transport Layer Security (TLS, SSL, HTTPS)</a></li>
<li class="toctree-l2"><a class="reference internal" href="security/systems.html#ip-security-ipsec">IP Security (IPsec)</a></li>
<li class="toctree-l2"><a class="reference internal" href="security/systems.html#wireless-security-802-11i">Wireless Security (802.11i)</a></li>
<li class="toctree-l2"><a class="reference internal" href="security/systems.html#firewalls">Firewalls</a></li>
</ul>
</li>
<li class="toctree-l1"><a class="reference internal" href="security/trend.html">Perspective: Blockchain and a Decentralized Internet</a></li>
</ul>
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