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54 lines
3.5 KiB
HTML
54 lines
3.5 KiB
HTML
<h1 id="iftop">iftop</h1>
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<p>一款实时流量监控工具</p>
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<h2 id="补充说明">补充说明</h2>
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<p><strong>iftop命令</strong> 是一款实时流量监控工具，监控TCP/IP连接等，缺点就是无报表功能。必须以root身份才能运行。</p>
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<h3 id="语法">语法</h3>
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<pre><code class="language-bash">iftop(选项)</code></pre>
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<h3 id="选项">选项</h3>
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<pre><code class="language-bash">iftop: display bandwidth usage on an interface by host
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Synopsis: iftop -h | [-npblNBP] [-i interface] [-f filter code]
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[-F net/mask] [-G net6/mask6]
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-h display this message
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-n don't do hostname lookups
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-N don't convert port numbers to services
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-p run in promiscuous mode (show traffic between other
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hosts on the same network segment)
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-b don't display a bar graph of traffic
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-B Display bandwidth in bytes
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-i interface listen on named interface
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-f filter code use filter code to select packets to count
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(default: none, but only IP packets are counted)
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-F net/mask show traffic flows in/out of IPv4 network
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-G net6/mask6 show traffic flows in/out of IPv6 network
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-l display and count link-local IPv6 traffic (default: off)
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-P show ports as well as hosts
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-m limit sets the upper limit for the bandwidth scale
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-c config file specifies an alternative configuration file
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-t use text interface without ncurses
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Sorting orders:
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-o 2s Sort by first column (2s traffic average)
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-o 10s Sort by second column (10s traffic average) [default]
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-o 40s Sort by third column (40s traffic average)
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-o source Sort by source address
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-o destination Sort by destination address
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The following options are only available in combination with -t
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-s num print one single text output afer num seconds, then quit
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-L num number of lines to print
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</code></pre>
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<h3 id="界面说明">界面说明</h3>
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<blockquote>
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<p>第一行为带宽，这里为1Mbit,不是字节哦. 连接列表，最后三列分别是2秒，10秒和40秒的平均流量 <code>=></code> 代表发送<br />
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<code><=</code> 代表接收 最后三行表示发送，接收和全部的流量， 第二列为你运行iftop到目前流量，第三列为高峰值，第四列为平均值。</p>
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</blockquote>
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<h3 id="实例">实例</h3>
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<div class="sourceCode" id="cb3"><pre><code class="language-bash"><a class="sourceLine" id="cb3-1" data-line-number="1"><span class="ex">iftop</span> # 默认是监控第一块网卡的流量</a>
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<a class="sourceLine" id="cb3-2" data-line-number="2"><span class="ex">iftop</span> -i eth1 # 监控eth1</a>
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<a class="sourceLine" id="cb3-3" data-line-number="3"><span class="ex">iftop</span> -n # 直接显示IP, 不进行DNS反解析</a>
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<a class="sourceLine" id="cb3-4" data-line-number="4"><span class="ex">iftop</span> -N # 直接显示连接埠编号, 不显示服务名称</a>
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<a class="sourceLine" id="cb3-5" data-line-number="5"><span class="ex">iftop</span> -F 192.168.1.0/24 or 192.168.1.0/255.255.255.0 # 显示某个网段进出封包流量</a></code></pre></div>
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