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How do I install and configure OpenSSL in Linux?
Install and Compile OpenSSL Go to the openssl downloaded directory ‘/usr/local/src/openssl’. Configure and compile OpenSSL with commands below. Wait for the OpenSSL compile process.
What version of OpenSSL should I use?
Criteria for choosing OpenSSL version: It depends all on your use. For example, if you want to use GCM for TSL, then you need to use 1.0.
How to update Ubuntu to newer version of OpenSSL?
If you know there is a newer version of OpenSSL you are attempting to use, you can simply upgrade that package individually by running: sudo apt-get install openssl If this returns 0 packages updated then there were no updates to the packages anyway. Then look at the packages that Ubuntu wants to upgrade and make a more informed choice.
Is there a way to manually compile OpenSSL?
To manually compile OpenSSL, do as follows: If it shows the old version, do the steps below. sudo yum update openssl is all you need. This will bring you up to openssl-1.0.1e-16.el6_5.7. You need to restart Apache after the update. Or better yet, reboot the box if possible, so that all applications that use OpenSSL will load the new version.
Is it safe to replace OpenSSL with RHEL?
Replacing OpenSSL with the latest version from upstream (i.e. 1.0.1g) runs the risk of introducing functionality changes which may break compatibility with applications/clients in unpredictable ways, causes your system to diverge from RHEL, and puts you on the hook for personally maintaining future updates to that package.
What happens when I replace OpenSSL with RPM?
By replacing openssl using a simple make config && make && make install means that you also lose the ability to use rpm to manage that package and perform queries on it (e.g. verifying all the files are present and haven’t been modified or had permissions changed without also updating the RPM database).