Hi Raghu,

Currently we are not sending SNI extension in the Client Hello message.

However, I made a PR to implement this: https://github.com/balabit/syslog-ng/pull/2930

Can you build syslog-ng from source? It would be great, if you tested the PR.

Best regards,

Attila

---

From: syslog-ng <syslog-ng-bounces@lists.balabit.hu> on behalf of Raghunath Adhyapak <funduraghu@gmail.com>
Sent: Tuesday, September 17, 2019 9:05 AM
To: syslog-ng@lists.balabit.hu <syslog-ng@lists.balabit.hu>
Subject: [syslog-ng] Enable SNI (Server Name Identification) in TLS connection

 

CAUTION: This email originated from outside of the organization. Do not follow guidance, click links, or open attachments unless you recognize the sender and know the content is safe.

Hi,

I am using TLS over TCP connection to forward my syslog events to a remote server.

My remote server uses SNI (Server Name Identification) to route connections/events to one of the available backend servers.

I observe that syslog-ng doesn't send SNI during TLS handshake.

How can I enable it?

My configuration is as follows:

===================================

source s_net { syslog(transport(udp) port(1514)); };

destination d_tcp {

        tcp(

                "XX.example.net"

                port(96)

                tls(

                        peer-verify(required-untrusted)

                        ca_dir("/etc/syslog-ng/ssl")

                        key-file("/etc/syslog-ng/ssl/globaltest/XX.example.net.key.pem")

                        cert-file("/etc/syslog-ng/ssl/globaltest/XX.example.net.cert.pem")

                  )

        );

};

log {

        source(s_net);

        destination(d_tcp);

};

===================================

I want syslog-ng to send XX.example.net as SNI to my remote server

Please advise

Thanks

Raghu

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