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When I connect via HTTPS with MSIE, I get various I/O errors. What is the reason?
Applies to: NetMAX Products with SSL.
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The SSL implementation in some MSIE versions has some subtle bugs related to the HTTP keep-alive facility and the SSL close notify alerts on socket connection close. Additionally, the interaction between SSL and HTTP/1.1 features are problematic with some MSIE versions.

As a work around, you can add the following directive in the /var/conf/apache/httpd.conf file, which will force the admin web server to not use HTTP/1.1, keep-alive connection, or sending the SSL close notify messages to MSIE clients: 

SetEnvIf User-Agent ".*MSIE.*" nokeepalive ssl-unclean-shutdown downgrade-1.0 force-response-1.0

This should all be on one line, and you may only need to comment out this line and add a couple of the parameters, as part of this line may already exist in your httpd.conf file. You should reboot your server for the changes to take effect.

WARNING: If you have made a typo when editing the config file, when you reboot, you may no longer be able to access the admin interface.

Additionally, in general, you should set your Internet Explorer to:

  1. Disable SSL version 3.
  2. Access the internet directly (not through a proxy server).
  3. Disable cacheing (retrieve document from remote site each time as opposed to once per session).
  4. Enable cookies.

Sources: ModSSL FAQ
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