Hi, Secure connection to Elasticsearch was already supported through Shield (now X-pack) for a while and SearchGuard support was also added recently. Both used transport mode for connection. Today encrypted connection using HTTPS became available thanks to Faxm0dem: https://github.com/balabit/syslog-ng/pull/1321 Before leaving for the weekend I prepared RPM packages from this PR in my 'githead' repositories. You can read about how to use those in my blog at https://www.balabit.com/blog/rpm-packages-from-syslog-ng-git-head/ Would be great if someone tested this against X-pack! Have a nice weekend! Bye, Peter Czanik (CzP) <peter.czanik@balabit.com> Balabit / syslog-ng upstream https://www.balabit.com/blog/author/peterczanik/ https://twitter.com/PCzanik