# Failed to tls handshake with logstash **URL:** \ **Category:** Logstash\ **Created:** [September 13, 2015, 2:22am UTC](https://discuss.elastic.co/t/failed-to-tls-handshake-with-logstash/29184 "2015-09-13T02:22:53Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![sumeet\_dembra](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/sumeet_dembra/32/56190_2.png) [@sumeet\_dembra](https://discuss.elastic.co/u/sumeet_dembra)\ **Post date:** [September 13, 2015, 2:22am UTC](https://discuss.elastic.co/t/failed-to-tls-handshake-with-logstash/29184/1 "2015-09-13T02:22:53Z")
Hi, I have a setup in which there are 7 machines with logstash-forwarder connecting to logstash server. 6 of these are RHEL and 1 is debian. I use same certificate on all servers to connect to logstash. All RHEL machines get connected successfully to logstash whereas there is following error seen while connecting debian machine to logstash: Failed to tls handshake with X.X.X.X x509: cannot validate certificate for X.X.X.X because it doesn't contain any IP SA I have logstash-forwarder-0.3.1 on RHEL and logstash-forwarder-0.4.0 on debian. Is this problem because of different logstash-forwarder version or is it because of debian OS or is there any problem in certificate. Thanks in advance. ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 6, 2017, 5:29am UTC](https://discuss.elastic.co/t/failed-to-tls-handshake-with-logstash/29184/2 "2017-07-06T05:29:16Z")