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How to create a CSR on your own Linux server ?

  • 1. First create a key file

    # Openssl genrsa - des3 -out domain.key 2048

    During installation, enter a password as long as possible . This you have to remember absolutely !

  • 2. Create RSA key

    # Openssl rsa- in domain.key -out domain.rsa.key

  • Certificate Signing Request( CSR) :

    # Openssl req- new-key domain.key -out domain.csr

    Carefully fill and dispense with umlauts and special characters. As a common name , please enter the domain a , for which the certificate is to be used later, eg shop.domain.tld .

    Enter passphrase for domain.key :
    You are about to be asked to enter information thatwill be incorporated
    into your certificate request .
    What you are about to enter is what is called a Distinguished Name or a DN .
    There are quite a few fields but you can leave some blank
    For some fields there will be a default value ,
    If you enter ' . ' , The field will be left blank .
    Country Name (2 letter code ) [ AU ] : DE
    State or Province Name (full name) [ Some - State] : BW
    Locality Name ( eg , city ) []: Karlsruhe
    Organization Name ( eg, company) []: Name of your company
    Organizational Unit Name (eg , section ) [] : Department
    Common Name (eg, YOUR name) []: domain.tld
    Email Address [ ] : webmaster@domain.tld

    Please enter the Following ' extra' attributes
    to be sent with your certificate request
    A challenge password []:
    An optional company name [ ] :

    After completing all the information you will find the CSR as text in the domain.csr file.

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