擅长:python、mysql、java
<pre><code>[torxed@archie ~]$ telnet ftp.python.org 21
Trying 82.94.164.162...
Connection failed: Connection refused
Trying 2001:888:2000:d::a2...
telnet: Unable to connect to remote host: Network is unreachable
</code></pre>
<p>主机名不好(前面提到的ping可以工作),但默认端口21是坏的。或者他们根本没有在主机上运行标准的FTP服务器,而是使用HTTP作为传输:<a href="https://www.python.org/ftp/python/" rel="nofollow">https://www.python.org/ftp/python/</a></p>
<p>对抗<strong>ftp.acc.umu.se</strong>。在</p>
^{pr2}$