I am setting up nginx reverse proxy on Ubuntu 16.04 LTS Server for Web-Server.
There will three different Services running on Ubuntu. Services will communicate each other using API calls. Similarly Clients(Browser/Mobile) will communicate the Services using API calls.
To validate Client SSL requests, I need to install certificates on Server PC. After Authentication only request will get processed or forwarded to process further.
Each Service I have Certificates of following format files. Ser1_cert.crt, Ser1_key-decryp.key, Ser1_keyfile.key, Ser1_exported.pfx
lly Ser2_..., Ser3_... files are available
For CA, I have CA_50EA.crt, CA_50EA.pfx files are available
I don't have clarity on which certificate file format I suppose to use for Certificate installation.
To install certificates on System I followed following steps. 1. I copied .crt extension files (including CA file) into /usr/share/ca-certificates then I run the below command. 2. sudo dpkg-reconfigure ca-certificates
It showed the UI to select certificates, I selected all. At the end it showed the no. of certificates added.
I put the certificate path properly in nginx.conf file. I copied .crt and .key files to /etc/ssl/certs/ and /etc/ssl/private/ respectively.
ssl_certificate "/etc/pki/certs/XServer_certificate.crt"; ssl_certificate_key "/etc/ssl/private/XServer_decryp.key";
Now I tried to login to Server from the Browser client, but the login Certificate validation got failed with the following Server log message.
Certification Error :unable to get local issuer certificate
To reconfirm again, I copied all the certificate files into /usr/share/ca-certificates directory (total 14 files), then I again executed 'sudo dpkg-reconfigure ca-certificates'. This time also getting same error.
- Next time I ran "sudo update-ca-certificates --fresh" command It showed the no. of certificates installed with a Warning for ca.pem file as below.
WARNING: CA_50EA.pem does not contain a certificate or CRL: skipping 152 added, 0 removed; done.
.pem file is created in /etc/ssl/certs folder, but I inputted only .crt file in /usr/share/ca-certificates
I tried to verify using below command, there also I seeing same issue as below.
openssl s_client -connect [server name]:443 -showcerts -CAfile /etc/ssl/certs/ca-certificates.crt
................. ................. Verify return code: 21 (unable to verify the first certificate)
It tells very clear verification failed.
Any step I'm missing, what is the right approach to do this. By seeing error, I thought CA not installed properly.
I read many blogs, most of them explaining same, but it is not working for me.
some time before I worked on CentOS7, there I used following commands to install certificates on the system. update-ca-trust force-enable, update-ca-trust extract In CentOS Clients certificate validation happening fine with the above commands.
Any feedback is appreciated.