请问HN：为什么美国签证申请网站会对我的网络进行端口扫描？
我最近在Firefox上安装了这个扩展：<a href="https://addons.mozilla.org/en-US/firefox/addon/port-authority/" rel="nofollow">https://addons.mozilla.org/en-US/firefox/addon/port-authority/</a>，昨天我访问了这个网站：<a href="https://ceac.state.gov/genniv/" rel="nofollow">https://ceac.state.gov/genniv/</a>，我收到了一个通知，提示该网站试图对我的私人网络进行端口扫描。
<p>这是常见的情况吗？我刚刚安装了这个扩展，所以不确定是否还有很多其他网站也这样做。</p>
<p>在调查这个问题时，我注意到uBlock Origin已经有默认列表“阻止外部入侵本地网络”，但这个选项并没有启用。</p>
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I have recently installed this extension on FF: <a href="https://addons.mozilla.org/en-US/firefox/addon/port-authority/" rel="nofollow">https://addons.mozilla.org/en-US/firefox/addon/port-authorit...</a> and yesterday I visited this website: <a href="https://ceac.state.gov/genniv/" rel="nofollow">https://ceac.state.gov/genniv/</a> and I got a notification that the website tried to do a port-scan of my private network.<p>Is this a common thing? I have just recently installed the extension, so I am not sure if there are a lot of other websites who do it.<p>Since looking into it, I noticed that uBlock Origin already has the default list "Block Outsider Intrusion into LAN" but it wasn't enabled.