Self-Signed-CA-SSL-CRT

Revision as of 05:28, 11 June 2013 by Vrudraiah (talk | contribs) (self signed CA and certificate installation)

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Below are the example steps to create self signed SSL certificate with CA valid for 10 years in a multi-server setup.

Edit /opt/zimbra/bin/zmcertmgr file on LDAP master server (as root user)and search for "validation_days", then modify the default value as per your requirement, then save and exit.

[root@v01 ~]# nano /opt/zimbra/bin/zmcertmgr [root@v01 ~]# cat /opt/zimbra/bin/zmcertmgr |grep validation_days validation_days=3660

   -days ${validation_days} \
   validation_days=$1
   echo "Validation days: $validation_days"
   -days ${validation_days} \
 #  -days ${validation_days} -CAserial ${zimbra_ca_srl} \
 echo "-  Default <validation_days> is 365. "

[root@v01 ~]#

Take the backup of old CA/certs and then create new CA valid for 10 years (3660 days)CA with 2048 key size.

[root@v01 ~]# mv /opt/zimbra/ssl/zimbra /opt/zimbra/ssl/zimbra_old [root@v01 ~]# /opt/zimbra/bin/zmcertmgr createca -new -keysize 2048 -subject "/C=DE/ST=New-York/L=New-York/O=zimbra/OU=ZimbraGlobalSupport/CN=*.vinay.com"

    • Creating directory /opt/zimbra/ssl/zimbra
    • Creating directory /opt/zimbra/ssl/zimbra/ca
    • Creating directory /opt/zimbra/ssl/zimbra/server
    • Creating directory /opt/zimbra/ssl/zimbra/commercial
    • Creating /opt/zimbra/ssl/zimbra/ca/zmssl.cnf...done
    • Creating CA private key /opt/zimbra/ssl/zimbra/ca/ca.key...done.
    • Creating CA cert /opt/zimbra/ssl/zimbra/ca/ca.pem...done.

[root@v01 ~]#

Deploy CA locally

[root@v01 ~]# /opt/zimbra/bin/zmcertmgr deployca -locally

    • Importing CA /opt/zimbra/ssl/zimbra/ca/ca.pem into CACERTS...done.
    • Saving global config key zimbraCertAuthorityCertSelfSigned...done.
    • Saving global config key zimbraCertAuthorityKeySelfSigned...done.
    • Copying CA to /opt/zimbra/conf/ca...done.

[root@v01 ~]#

Create self signed SSL certificate valid for 10 years (3660 days) with 2048 keysize (we can add more than one subjectAltNames in multi-server setup).

[root@v01 ~]# /opt/zimbra/bin/zmcertmgr createcrt -new -days 3660 -keysize 2048 -subject "/C=DE/ST=New-York/L=New-York/O=Zimbra/OU=ZimbraGlobalSupport/CN=*.vinay.com" -subjectAltNames "v01.vinay.com,v01store1.vinay.com" Validation days: 3660

    • Creating /opt/zimbra/conf/zmssl.cnf...done
    • Backup /opt/zimbra/ssl/zimbra to /opt/zimbra/ssl/zimbra.20120214030428
    • Generating a server csr for download self -new -keysize 2048
    • Backup /opt/zimbra/ssl/zimbra to /opt/zimbra/ssl/zimbra.20120214030428
    • Retrieving Commercial CA cert from ldap...done.
    • Creating server cert request /opt/zimbra/ssl/zimbra/server/server.csr...done.
    • Saving server config key zimbraSSLPrivateKey...done.
    • Signing cert request /opt/zimbra/ssl/zimbra/server/server.csr...done.

[root@v01 ~]#

We can remove the regular empty file created during self signed SSL certificate generation.

[root@v01 ~]# rm /opt/zimbra/ssl/zimbra/commercial/commercial_ca.crt rm: remove regular empty file `/opt/zimbra/ssl/zimbra/commercial/commercial_ca.crt'? y [root@v01 ~]#

Deploy self signed SSL certificate that we have generated for 3660 days.

[root@v01 ~]# /opt/zimbra/bin/zmcertmgr deploycrt self

    • Saving server config key zimbraSSLCertificate...done.
    • Saving server config key zimbraSSLPrivateKey...done.
    • Installing mta certificate and key...done.
    • Installing slapd certificate and key...done.
    • Installing proxy certificate and key...done.
    • Creating pkcs12 file /opt/zimbra/ssl/zimbra/jetty.pkcs12...done.
    • Creating keystore file /opt/zimbra/mailboxd/etc/keystore...done.
    • Installing CA to /opt/zimbra/conf/ca...done.

[root@v01 ~]#

We need to restart the zimbra services (zmcontrol restart)for the new CA/certificate to take effect.

[root@v01 ~]# su - zimbra -c "zmcontrol stop ; zmcontrol start" Host v01.vinay.com Stopping zmconfigd...Done. Stopping stats...Done. Stopping mta...Done. Stopping spell...Done. Stopping snmp...Done. Stopping cbpolicyd...Done. Stopping archiving...Done. Stopping antivirus...Done. Stopping antispam...Done. Stopping imapproxy...Done. Stopping memcached...Done. Stopping mailbox...Done. Stopping convertd...Done. Stopping logger...Done. Stopping ldap...Done. Host v01.vinay.com Starting ldap...Done. Starting zmconfigd...Done. Starting logger...Done. Starting convertd...Done. Starting mailbox...Done. Starting memcached...Done. Starting imapproxy...Done. Starting antispam...Done. Starting antivirus...Done. Starting archiving...Done. Starting snmp...Done. Starting spell...Done. Starting mta...Done. Starting stats...Done. [root@v01 ~]#

Now verify the certificate status.

[root@v01 ~]# /opt/zimbra/bin/zmcertmgr viewdeployedcrt

service mta::

notBefore=Feb 14 11:04:37 2012 GMT notAfter=Feb 21 11:04:37 2022 GMT subject= /C=DE/ST=New-York/O=Zimbra/OU=ZimbraGlobalSupport/CN=*.vinay.com issuer= /C=DE/ST=New-York/L=New-York/O=zimbra/OU=ZimbraGlobalSupport/CN=*.vinay.com SubjectAltName= v01.vinay.com, v01store1.vinay.com

service proxy::

notBefore=Feb 14 11:04:37 2012 GMT notAfter=Feb 21 11:04:37 2022 GMT subject= /C=DE/ST=New-York/O=Zimbra/OU=ZimbraGlobalSupport/CN=*.vinay.com issuer= /C=DE/ST=New-York/L=New-York/O=zimbra/OU=ZimbraGlobalSupport/CN=*.vinay.com SubjectAltName= v01.vinay.com, v01store1.vinay.com

service mailboxd::

notBefore=Feb 14 11:04:37 2012 GMT notAfter=Feb 21 11:04:37 2022 GMT subject= /C=DE/ST=New-York/O=Zimbra/OU=ZimbraGlobalSupport/CN=*.vinay.com issuer= /C=DE/ST=New-York/L=New-York/O=zimbra/OU=ZimbraGlobalSupport/CN=*.vinay.com SubjectAltName= v01.vinay.com, v01store1.vinay.com

service ldap::

notBefore=Feb 14 11:04:37 2012 GMT notAfter=Feb 21 11:04:37 2022 GMT subject= /C=DE/ST=New-York/O=Zimbra/OU=ZimbraGlobalSupport/CN=*.vinay.com issuer= /C=DE/ST=New-York/L=New-York/O=zimbra/OU=ZimbraGlobalSupport/CN=*.vinay.com SubjectAltName= v01.vinay.com, v01store1.vinay.com [root@v01 ~]#


We can verify the CA status using below commands.

[root@v01 ~]# openssl x509 -text -noout -in /opt/zimbra/ssl/zimbra/ca/ca.pem Certificate:

   Data:
       Version: 1 (0x0)
       Serial Number:
       Signature Algorithm: sha1WithRSAEncryption
       Issuer: C=DE, ST=New-York, L=New-York, O=zimbra, OU=ZimbraGlobalSupport, CN=*.vinay.com
       Validity
           Not Before: Feb 14 11:03:00 2012 GMT
           Not After : Feb 21 11:03:00 2022 GMT
       Subject: C=DE, ST=New-York, L=New-York, O=zimbra, OU=ZimbraGlobalSupport, CN=*.vinay.com
       Subject Public Key Info:
           Public Key Algorithm: rsaEncryption
           RSA Public Key: (2048 bit)
               Modulus (2048 bit):
                                   Exponent: 65537 (0x10001)
   Signature Algorithm: sha1WithRSAEncryption

[root@v01 ~]#

Then we need to copy/paste the CA from LDAP master to all other servers and deploy the same.

[root@v01store1 ~]# rm -rf /opt/zimbra/ssl/zimbra/ca/* ; rm -rf /opt/zimbra/ssl/zimbra/server/* [root@v01store1 ~]# scp -r root@10.112.233.171://opt/zimbra/ssl/zimbra/ca/* /opt/zimbra/ssl/zimbra/ca/ root@10.112.233.171's password: ca.csr 100% 1082 1.1KB/s 00:00 ca.key 100% 1708 1.7KB/s 00:00 ca.pem 100% 1265 1.2KB/s 00:00 ca.srl 100% 11 0.0KB/s 00:00 ca.srl.old 100% 11 0.0KB/s 00:00 index.txt 100% 101 0.1KB/s 00:00 index.txt.attr 100% 21 0.0KB/s 00:00 index.txt.old 100% 0 0.0KB/s 00:00 1329217468.pem 100% 1326 1.3KB/s 00:00 zmssl.cnf 100% 7702 7.5KB/s 00:00 [root@v01store1 ~]#

[root@v01store1 ~]# /opt/zimbra/bin/zmcertmgr deployca

    • Importing CA /opt/zimbra/ssl/zimbra/ca/ca.pem into CACERTS...done.
    • Copying CA to /opt/zimbra/conf/ca...done.

[root@v01store1 ~]#

Create certificate/deploy certificate

[root@v01store1 ~]# /opt/zimbra/bin/zmcertmgr createcrt -new -days 3660 -keysize 2048 -subject "/C=DE/ST=New-York/L=New-York/O=Zimbra/OU=ZimbraGlobalSupport/CN=*.vinay.com" -subjectAltNames "v01.vinay.com,v01store1.vinay.com" Validation days: 3660

    • Creating /opt/zimbra/conf/zmssl.cnf...done
    • Backup /opt/zimbra/ssl/zimbra to /opt/zimbra/ssl/zimbra.20120214172721
    • Generating a server csr for download self -new -keysize 2048
    • Backup /opt/zimbra/ssl/zimbra to /opt/zimbra/ssl/zimbra.20120214172721
    • Retrieving Commercial CA cert from ldap...done.
    • Creating server cert request /opt/zimbra/ssl/zimbra/server/server.csr...done.
    • Saving server config key zimbraSSLPrivateKey...done.
    • Signing cert request /opt/zimbra/ssl/zimbra/server/server.csr...done.

[root@v01store1 ~]#

[root@v01store1 ~]# rm /opt/zimbra/ssl/zimbra//commercial/commercial_ca.crt rm: remove regular empty file `/opt/zimbra/ssl/zimbra//commercial/commercial_ca.crt'? y [root@v01store1 ~]#

[root@v01store1 ~]# /opt/zimbra/bin/zmcertmgr deploycrt self

    • Saving server config key zimbraSSLCertificate...done.
    • Saving server config key zimbraSSLPrivateKey...done.
    • Installing mta certificate and key...done.
    • Installing slapd certificate and key...done.
    • Installing proxy certificate and key...done.
    • Creating pkcs12 file /opt/zimbra/ssl/zimbra/jetty.pkcs12...done.
    • Creating keystore file /opt/zimbra/mailboxd/etc/keystore...done.
    • Installing CA to /opt/zimbra/conf/ca...done.

[root@v01store1 ~]#

restart zimbra services for the new certificate and CA to take effect.

[root@v01store1 ~]# su - zimbra -c "zmcontrol stop ; zmcontrol start" Host v01store1.vinay.com Stopping zmconfigd...Done. Stopping stats...Done. Stopping spell...Done. Stopping snmp...Done. Stopping cbpolicyd...Done. Stopping archiving...Done. Stopping antivirus...Done. Stopping antispam...Done. Stopping imapproxy...Done. Stopping memcached...Done. Stopping mailbox...Done. Stopping convertd...Done. Stopping logger...Done. Host v01store1.vinay.com Starting zmconfigd...Done. Starting logger...Done. Starting convertd...Done. Starting mailbox...Done. Starting snmp...Done. Starting spell...Done. Starting stats...Done. [root@v01store1 ~]#

Verify certificate status

[root@v01store1 ~]# /opt/zimbra/bin/zmcertmgr viewdeployedcrt

service mta::

notBefore=Feb 14 11:57:30 2012 GMT notAfter=Feb 21 11:57:30 2022 GMT subject= /C=DE/ST=New-York/O=Zimbra/OU=ZimbraGlobalSupport/CN=*.vinay.com issuer= /C=DE/ST=New-York/L=New-York/O=zimbra/OU=ZimbraGlobalSupport/CN=*.vinay.com SubjectAltName= v01store1.vinay.com, v01.vinay.com

service proxy::

notBefore=Feb 14 11:57:30 2012 GMT notAfter=Feb 21 11:57:30 2022 GMT subject= /C=DE/ST=New-York/O=Zimbra/OU=ZimbraGlobalSupport/CN=*.vinay.com issuer= /C=DE/ST=New-York/L=New-York/O=zimbra/OU=ZimbraGlobalSupport/CN=*.vinay.com SubjectAltName= v01store1.vinay.com, v01.vinay.com

service mailboxd::

notBefore=Feb 14 11:57:30 2012 GMT notAfter=Feb 21 11:57:30 2022 GMT subject= /C=DE/ST=New-York/O=Zimbra/OU=ZimbraGlobalSupport/CN=*.vinay.com issuer= /C=DE/ST=New-York/L=New-York/O=zimbra/OU=ZimbraGlobalSupport/CN=*.vinay.com SubjectAltName= v01store1.vinay.com, v01.vinay.com

service ldap::

notBefore=Feb 14 11:57:30 2012 GMT notAfter=Feb 21 11:57:30 2022 GMT subject= /C=DE/ST=New-York/O=Zimbra/OU=ZimbraGlobalSupport/CN=*.vinay.com issuer= /C=DE/ST=New-York/L=New-York/O=zimbra/OU=ZimbraGlobalSupport/CN=*.vinay.com SubjectAltName= v01store1.vinay.com, v01.vinay.com [root@v01store1 ~]#

verify the CA copied from LDAP master and deployed on store too.

[root@v01store1 ~]# openssl x509 -text -noout -in /opt/zimbra/ssl/zimbra/ca/ca.pem Certificate:

   Data:
       Version: 1 (0x0)
       Serial Number:
       Signature Algorithm: sha1WithRSAEncryption
       Issuer: C=DE, ST=New-York, L=New-York, O=zimbra, OU=ZimbraGlobalSupport, CN=*.vinay.com
       Validity
           Not Before: Feb 14 11:03:00 2012 GMT
           Not After : Feb 21 11:03:00 2022 GMT
       Subject: C=DE, ST=New-York, L=New-York, O=zimbra, OU=ZimbraGlobalSupport, CN=*.vinay.com
       Subject Public Key Info:
           Public Key Algorithm: rsaEncryption
           RSA Public Key: (2048 bit)
               Modulus (2048 bit):
                                   Exponent: 65537 (0x10001)
   Signature Algorithm: sha1WithRSAEncryption
      [root@v01store1 ~]#
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