Mac OS X
添加证书：
sudo security add-trusted-cert -d -r trustRoot -k /Library/Keychains/System.keychain ~/new-root-certificate.crt
移除证书：
sudo security delete-certificate -c ""
Windows
添加证书：
certutil -addstore -f "ROOT" new-root-certificate.crt
移除证书：
certutil -delstore "ROOT" serial-number-hex
Linux (Ubuntu, Debian)
添加证书：
1.复制 CA 文件到目录： /usr/local/share/ca-certificates/
2.执行:
sudo cp foo.crt /usr/local/share/ca-certificates/foo.crt
3.更新 CA 证书库:
sudo update-ca-certificates
移除证书：
1.Remove your CA.
2.Update the CA store:
sudo update-ca-certificates --fresh
Restart Kerio Connect to reload the certificates in the 32-bit versions or Debian 7.
Linux (CentOs 6)
添加证书：
1.安装 ca-certificates package:
yum install ca-certificates
2.启用dynamic CA configuration feature:
update-ca-trust force-enable
3.Add it as a new file to /etc/pki/ca-trust/source/anchors/:
cp foo.crt /etc/pki/ca-trust/source/anchors/
4.执行:
update-ca-trust extract
Restart Kerio Connect to reload the certificates in the 32-bit version.
Linux (CentOs 5)
添加证书：
Append your trusted certificate to file /etc/pki/tls/certs/ca-bundle.crt
cat foo.crt >> /etc/pki/tls/certs/ca-bundle.crt