YaDDNet : VPS SSL Renewal - John's Vademecum

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====== YaDDNet : VPS SSL Renewal ======

** Renewed SSL certificates for 2025/6 **

<note important>Read the final part about combining the 2 intermediate certificates!</note>
===== 15/03/25 : SSL certificates =====


  * Renewed SSL certificates available for download on Fasthosts account
    * Download "Certificate" and rename -> ''signed.crt''
    * Download //both// "Intermediate Certificates"
      * not sure why there are 2 //intermediate// certificates
      * rename one as ''ca.pem.1''
      * renmame other as ''ca.pem.2''
  * Use WinSCP to copy the 3 certificates to the Yaddnet VPS
  * Log on to yaddnet vps via SSH
    * copy existing certificates in ''/usr/local/ssl'' from
      * ''signed.crt'' -> ''signed.crt.old''
      * ''ca.pem'' -> ''ca.pem.old''
    * copy new certificates from ''home'' directory to ''/usr/local/ssl''
    * for clarity this gives new files
      * ''/usr/local/ssl/signed.crt''
      * ''/usr/local/ssl/ca.pem.1''
      * ''/usr/local/ssl/ca.pem.2''
      * copy ''ca.pem.2'' -> ''ca.pem''
    * Restart Apache
      * ''service apache2 restart''
    * browse to [[https://www.yaddnet.org/index.php?]]
    * site loads correctly
      * check site security

{{:public:radio:2025:screenshot_2025-03-15_072557.png?400|}}

  * swap ''ca.pem'' files (copy ''ca.pem.1'' -> ''ca.pem'')
  * Restart Apache
  * browse to [[https://www.yaddnet.org/index.php?]]
  * site loads correctly
  * security also valid

==== Different intermediate CA.pem certificates ====

I used openssl to inspect the two different //intermediate// certificates 

<code>gm4slv@yaddnet2:~ $ openssl x509 -in ca.pem -noout -text > /home/gm4slv/capemold.txt</code>


  * for ca.pem.1

<code>
Certificate:
    Data:
        Version: 3 (0x2)
        Serial Number:
            39:72:44:3a:f9:22:b7:51:d7:d3:6c:10:dd:31:35:95
        Signature Algorithm: sha384WithRSAEncryption
        Issuer: C = GB, ST = Greater Manchester, L = Salford, O = Comodo CA Limited, CN = AAA Certificate Services
        Validity
            Not Before: Mar 12 00:00:00 2019 GMT
            Not After : Dec 31 23:59:59 2028 GMT
        Subject: C = US, ST = New Jersey, L = Jersey City, O = The USERTRUST Network, CN = USERTrust RSA Certification Authority

</code>

  * or ca.pem.2

<code>
Certificate:
    Data:
        Version: 3 (0x2)
        Serial Number:
            7d:5b:51:26:b4:76:ba:11:db:74:16:0b:bc:53:0d:a7
        Signature Algorithm: sha384WithRSAEncryption
        Issuer: C = US, ST = New Jersey, L = Jersey City, O = The USERTRUST Network, CN = USERTrust RSA Certification Authority
        Validity
            Not Before: Nov  2 00:00:00 2018 GMT
            Not After : Dec 31 23:59:59 2030 GMT
        Subject: C = GB, ST = Greater Manchester, L = Salford, O = Sectigo Limited, CN = Sectigo RSA Domain Validation Secure Server CA
</code>

  * and for completeness the //old// original ca.pem from prior to the renewal

<code>
Certificate:
    Data:
        Version: 3 (0x2)
        Serial Number:
            0d:e0:ff:b5:ee:62:cb:61:10:9f:60:8c:9c:ed:5e:d3
        Signature Algorithm: sha256WithRSAEncryption
        Issuer: C = US, O = DigiCert Inc, OU = www.digicert.com, CN = DigiCert Global Root G2
        Validity
            Not Before: Nov 27 12:46:40 2017 GMT
            Not After : Nov 27 12:46:40 2027 GMT
        Subject: C = US, O = DigiCert Inc, OU = www.digicert.com, CN = Encryption Everywhere DV TLS CA - G2
</code>

It appears that the certificate (ca.pem.2) from "Sectigo" has the longest validity, and that this is the more recent/appropriate one, so I've made it the certificate in use 

''sudo cp ca.pem.2 ca.pem''

''sudo service apache2 restart''



===== UPDATE ON TWO INTERMEDIATE CERTIFICATES 5/7/25 =====

<note important>I've discovered that the 2 Intermediate Certificates are necessary to complete the //chain// of authority.
</note>


What should be done is to join them together into one //ca.pem// file (and in the correct order.... )

**Don't rename the 2 files as ''ca.pem.1'' and ''ca.pem.2'' per the above  **

Transfer them both with their **//original//** names and then ''cat'' them together

<code bash>

[root@yaddnet2:/home/g4slv/ssl]# cat 397A66CC2756362E0DAA87CA6EABE3B1.cer 7D5B5126B476BA11DB74160BBC530DA7.cer > ca.pem

[root@yaddnet2:/home/g4slv/ssl]# cp ca.pem /usr/local/ssl

[root@yaddnet2:/home/g4slv/ssl]# systemctl restart apache2

</code>

Check correct SSL operation at [[https://www.ssllabs.com/ssltest/analyze.html]]


--- //John Pumford-Green 15/03/25 06:36 GMT//


===== Further Information =====


{{tag>yaddnet radio}}

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