我在http://yourarthere.net:8443访问 Plesk Admin 有一段时间了，但自从我搬到新家和 ISP (Comcast) 后，我无法使用浏览器或 UNIX wget 访问该页面。
# wget http://yourarthere.net:8443
--2011-08-22 21:13:06-- http://yourarthere.net:8443/
Resolving yourarthere.net (yourarthere.net)... <IP>
Connecting to yourarthere.net (yourarthere.net)|<IP>|:8443...
connected.
HTTP request sent, awaiting response... ^C <canceled>
但是，我可以使用我的手机或其他 ISP 访问该页面。
奇怪的是，如果我使用安全连接，我可以从家里访问该页面。有人告诉我，Plesk 无论如何都应该从 http 自动转发到 https，但出于某种原因，我的 ISP（康卡斯特）没有这样做。
此外，第二个可能相关的问题是我收到一条消息，提示我的安全证书存在问题。但同样，只有当我从我的 ISP 连接时才会发生这种情况。
# wget https://yourarthere.net:8443/
--2011-08-23 14:02:40-- https://yourarthere.net:8443/
Resolving yourarthere.net (yourarthere.net)... 69.64.52.141
Connecting to yourarthere.net (yourarthere.net)|69.64.52.141|:8443... connected.
ERROR: cannot verify yourarthere.net’s certificate, issued by “/C=US/ST=Arizona/L=Scottsdale/O=GoDaddy.com, Inc./OU=http://certificates.godaddy.com/repository/CN=Go Daddy Secure Certification Authority/serialNumber=07969287”:
Self-signed certificate encountered.
To connect to yourarthere.net insecurely, use ‘--no-check-certificate’.
以下是同事尝试不同 ISP 的结果：
# wget http://yourarthere.net:8443
--2011-08-23 14:41:53-- http://yourarthere.net:8443/
Resolving yourarthere.net... 69.64.52.141
Connecting to yourarthere.net|69.64.52.141|:8443... connected.
HTTP request sent, awaiting response... 302 Found
Location: https://yourarthere.net:8443/ [following]
--2011-08-23 14:41:53-- https://yourarthere.net:8443/
Connecting to yourarthere.net|69.64.52.141|:8443... connected.
HTTP request sent, awaiting response... 200 OK
Length: unspecified [text/html]
Saving to: `index.html.2'