# Problem with SSL3.0.

**URL:** <https://forums.digi.com/t/problem-with-ssl3-0/3688>\
**Category:** NET+OS\
**Tags:** ssl\
**Created:** [June 26, 2008, 6:33am UTC](https://forums.digi.com/t/problem-with-ssl3-0/3688 "2008-06-26T06:33:30Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Mariusz](https://avatars.discourse-cdn.com/v4/letter/m/838e76/32.png) [@Mariusz](https://forums.digi.com/u/Mariusz)\
**Post date:** [June 26, 2008, 6:33am UTC](https://forums.digi.com/t/problem-with-ssl3-0/3688/1 "2008-06-26T06:33:30Z")

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I have written client for TLS (SSL 3.1) version on Digi Connect Me for NETOS 7.1, and this client work correctly.

Problem is that I must write client SSL 3.0 version on NETOS 7.1 for Digi Connect Me.

I change settings for server to use SSL3.0

And I see on network:

-\>Digi send SSL3.1 (TLS) “Client Hello”  
\<-Server answer SSL3.0 “Server Hello”  
\<-Server send SSL3.0 “Certificate,Certificate request, Server hello Done”  
-\>Digi send SSL3.0 “Certificate”  
-\>Digi send SSL3.0 “Client key Exchange”  
-\>Digi send SSL3.0 “Certificate Verify”  
\<-Server answer SSL3.0 “ALERT level 28 (Handshake Failure)”!!!

Maybe Digi work on SSL3.1 and when server change SSL version to 3.0, DIGI still calculate “Certificate verify” using SSL 3.1.

I thing that I should change parameters in Netos7.1 to not use TLS (SSL3.1) but on DIGI documentation this is not described.

Message was edited by: Mariusz

Message was edited by: Mariusz

Message was edited by: Mariusz