How to install a CA key (self signed SSL) on ubuntu?

On Ubuntu 12.04 (precise), you have to drop the certificate file to /usr/local/share/ca-certificates and it has to end with .crt

Then run update-ca-certificates. It should tell you: "1 added, 0 removed; done."

Note that unfortunately firefox does not honor the system installed certificates ( http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=316436 ). You can use wget or w3m, which do honor them, to test if the certificate works.

Copying the *.pem file for your certification authority to /etc/ssl/certs/ should do the trick.

You'll have to copy the certificate of the root CA to the /etc/ssl/certs directory in PEM format. Then you must run the update-ca-certificates script which will add the certificate to the certificate bundle (/etc/ssl/certs/ca-certificates.crt) and make the symlink from the file to its hash value.