During the beta test of IPS4 the OpenSSL extension was optional.

Now during the RC2 system check it seems OpenSSL is required.

OpenSSL is required or not?

OpenSSL strongly recommended for all Servers!

I know, but my question is another.

If I use this tool http://community.invisionpower.com/files/file/7046-get-ready-for-ips-40/
it says that I can install IPS Community Suite without OpenSSL.

During the beta phase the openSSL was not required.

Now, when I try to install RC2, the system check says OpenSSL is required and I can not continue the installation process.

So, is it required or not?

There is broken file - http://community.invisionpower.com/files/file/7046-get-ready-for-ips-40/ for Suhosin parameters

In attach is correct.

 ips4.php (Save as...)

The system check of ips4.php says:

You do not have the OpenSSL PHP extension loaded. You can install IPS Community Suite without it, but it is required to use external login services...

 

But the RC2 system check says:

You do not have the OpenSSL PHP extension loaded which is required.

I'll look into getting the requirements checker updated.

openSSL is required, yes.  Our license server runs on an https server so you will need openSSL to connect to it.  Additionally, many other third party services require an https connection as well.