http://uralbash.ru/blog/tag/internet/atom.xml 2012-11-16T14:08:00Z ABlog http://uralbash.ru/articles/2012/shared_net/ 2012-11-16T14:08:00Z 2012-11-16T14:08:00Z Uralbash <div class="section" id="linux"> <div class="line-block"> <div class="line"><code class="docutils literal"><span class="pre">Дано</span></code>: ноутбук который смотрит в Интернет</div> <div class="line"><code class="docutils literal"><span class="pre">Надо</span></code>: получить Интернет на другом компе (компах) через этот ноут</div> </div> <p>В ноутбук вставляем еще одну сетевую карту, например такую:</p> <img alt="_static/2012/USB+RJ45.jpg" class="align-center" src="_static/2012/USB+RJ45.jpg" /> <p>В итоге у нас в ноуте <code class="docutils literal"><span class="pre">eth0</span></code> это Интернет, <code class="docutils literal"><span class="pre">eth1</span></code> это локалка. Для <code class="docutils literal"><span class="pre">eth1</span></code> делаем например такие настройки ip <code class="docutils literal"><span class="pre">10.0.0.100</span></code> mask 24. Я делал через <code class="docutils literal"><span class="pre">networkmanager</span></code>.</p> <p>Дальше соединяем <code class="docutils literal"><span class="pre">eth1</span></code> ноута с компом из локалки или со свичом. На компе из локалки делаем следующие настройки (для <a class="reference external" href="http://www.ubuntu.com/">Ubuntu</a> в <code class="docutils literal"><span class="pre">/etc/network/interfaces</span></code>):</p> <div class="highlight-bash"><div class="highlight"><pre><span></span>iface eth0 inet static <span class="c1"># ip компа</span> address <span class="m">10</span>.0.0.15 netmask <span class="m">255</span>.255.255.0 <span class="c1"># шлюз наш ноут</span> gateway <span class="m">10</span>.0.0.100 <span class="c1"># днс&#39;ы от гула фор фри, в версиях раньше 12.04 надо править /etc/resolv.conf</span> dns-nameservers <span class="m">8</span>.8.8.8 <span class="m">8</span>.8.4.4 auto eth0 </pre></div> </div> <p>Я не сетевик и не админ и не фанатею за сети, поэтому здесь описывается самый примитивный способ, как это заставить работать за 4мин18сек. В продакшине эту схему конечно нельзя использовать (наверно), для этого нужно пользоваться настройками фаервола и <code class="docutils literal"><span class="pre">NAT</span></code>.</p> <p>Дальше устанавливаем на ноуте <code class="docutils literal"><span class="pre">firestarter</span></code>:</p> <div class="highlight-bash"><div class="highlight"><pre><span></span>$ apt-get install firestarter </pre></div> </div> <div class="line-block"> <div class="line">Запускаем и в ГУЕ указываем <code class="docutils literal"><span class="pre">eth0</span></code> как внешний интерфейс и <code class="docutils literal"><span class="pre">eth1</span></code> как</div> <div class="line">внутренний.</div> <div class="line">На локальной машине:</div> </div> <div class="highlight-bash"><div class="highlight"><pre><span></span>$ ping uralbash.ru PING uralbash.ru <span class="o">(</span><span class="m">216</span>.239.36.21<span class="o">)</span> <span class="m">56</span><span class="o">(</span><span class="m">84</span><span class="o">)</span> bytes of data. <span class="m">64</span> bytes from any-in-2415.1e100.net <span class="o">(</span><span class="m">216</span>.239.36.21<span class="o">)</span>: <span class="nv">icmp_req</span><span class="o">=</span><span class="m">1</span> <span class="nv">ttl</span><span class="o">=</span><span class="m">44</span> <span class="nv">time</span><span class="o">=</span><span class="m">59</span>.4 ms <span class="m">64</span> bytes from any-in-2415.1e100.net <span class="o">(</span><span class="m">216</span>.239.36.21<span class="o">)</span>: <span class="nv">icmp_req</span><span class="o">=</span><span class="m">2</span> <span class="nv">ttl</span><span class="o">=</span><span class="m">44</span> <span class="nv">time</span><span class="o">=</span><span class="m">51</span>.6 ms <span class="m">64</span> bytes from any-in-2415.1e100.net <span class="o">(</span><span class="m">216</span>.239.36.21<span class="o">)</span>: <span class="nv">icmp_req</span><span class="o">=</span><span class="m">3</span> <span class="nv">ttl</span><span class="o">=</span><span class="m">44</span> <span class="nv">time</span><span class="o">=</span><span class="m">50</span>.9 ms <span class="m">64</span> bytes from any-in-2415.1e100.net <span class="o">(</span><span class="m">216</span>.239.36.21<span class="o">)</span>: <span class="nv">icmp_req</span><span class="o">=</span><span class="m">4</span> <span class="nv">ttl</span><span class="o">=</span><span class="m">44</span> <span class="nv">time</span><span class="o">=</span><span class="m">50</span>.0 ms <span class="m">64</span> bytes from any-in-2415.1e100.net <span class="o">(</span><span class="m">216</span>.239.36.21<span class="o">)</span>: <span class="nv">icmp_req</span><span class="o">=</span><span class="m">5</span> <span class="nv">ttl</span><span class="o">=</span><span class="m">44</span> <span class="nv">time</span><span class="o">=</span><span class="m">51</span>.4 ms <span class="m">64</span> bytes from any-in-2415.1e100.net <span class="o">(</span><span class="m">216</span>.239.36.21<span class="o">)</span>: <span class="nv">icmp_req</span><span class="o">=</span><span class="m">6</span> <span class="nv">ttl</span><span class="o">=</span><span class="m">44</span> <span class="nv">time</span><span class="o">=</span><span class="m">52</span>.5 ms <span class="m">64</span> bytes from any-in-2415.1e100.net <span class="o">(</span><span class="m">216</span>.239.36.21<span class="o">)</span>: <span class="nv">icmp_req</span><span class="o">=</span><span class="m">7</span> <span class="nv">ttl</span><span class="o">=</span><span class="m">44</span> <span class="nv">time</span><span class="o">=</span><span class="m">52</span>.3 ms <span class="m">64</span> bytes from any-in-2415.1e100.net <span class="o">(</span><span class="m">216</span>.239.36.21<span class="o">)</span>: <span class="nv">icmp_req</span><span class="o">=</span><span class="m">8</span> <span class="nv">ttl</span><span class="o">=</span><span class="m">44</span> <span class="nv">time</span><span class="o">=</span><span class="m">51</span>.1 ms ^C --- uralbash.ru ping statistics --- <span class="m">8</span> packets transmitted, <span class="m">8</span> received, <span class="m">0</span>% packet loss, <span class="nb">time</span> 7008ms rtt min/avg/max/mdev <span class="o">=</span> <span class="m">50</span>.083/52.444/59.403/2.733 ms </pre></div> </div> </div>