Hello Alan, Thanks for the response. I am running latest version of OpenSSL and radius version is 3.0.19. openssl-1.0.2k-16.amzn2.1.1.x86_64 freeradius-3.0.19-2.amzn2.x86_64 Thanks & Regards, Nitin Sharma On 23/08/19, 4:57 PM, "Freeradius-Users on behalf of Alan DeKok" <freeradius-users-bounces+shaniti=amazon.com@lists.freeradius.org on behalf of aland@deployingradius.com> wrote: On Aug 23, 2019, at 6:18 AM, Sharma, Nitin via Freeradius-Users <freeradius-users@lists.freeradius.org> wrote: Please don't CC me on messages to the list. In case you hadn't noticed, I *am* subscribed to the list. > I started seeing below errors related to TLS. So... what changed? Software doesn't magically change it's behaviour. And what versions are you running? i.e. FreeRADIUS, OpenSSL, etc. > ``` > Fri Aug 23 09:57:32 2019 : Error: tls: Failed in proxy receive > Fri Aug 23 09:57:32 2019 : Error: tls: error:140F3042:SSL routines:ssl_undefined_const_function:called a function you should not call > Fri Aug 23 09:57:32 2019 : Error: tls: error:140E0197:SSL routines:SSL_shutdown:shutdown while in init > Fri Aug 23 09:57:32 2019 : Error: tls: error:140E0197:SSL routines:SSL_shutdown:shutdown while in init > Fri Aug 23 09:57:32 2019 : Error: tls: error:140F3042:SSL routines:ssl_undefined_const_function:called a function you should not call > Fri Aug 23 09:57:32 2019 : Error: tls: error:140E0197:SSL routines:SSL_shutdown:shutdown while in init > Fri Aug 23 09:57:32 2019 : Error: tls: error:140E0197:SSL routines:SSL_shutdown:shutdown while in init > Fri Aug 23 09:57:32 2019 : Error: tls: error:140F3042:SSL routines:ssl_undefined_const_function:called a function you should not call > Fri Aug 23 09:57:32 2019 : Error: tls: error:140E0197:SSL routines:SSL_shutdown:shutdown while in init > Fri Aug 23 09:57:32 2019 : Error: tls: error:140E0197:SSL routines:SSL_shutdown:shutdown while in init > Fri Aug 23 09:57:32 2019 : Error: tls: error:140F3042:SSL routines:ssl_undefined_const_function:called a function you should not call > Fri Aug 23 09:57:32 2019 : Error: tls: error:140E0197:SSL routines:SSL_shutdown:shutdown while in init > Fri Aug 23 09:57:32 2019 : Error: tls: error:140E0197:SSL routines:SSL_shutdown:shutdown while in init > ``` > > Any suggestion on this will really help. Upgrade OpenSSL to a version that isn't broken. There's a commit in OpenSSL from 2016 that fixes this issue. https://github.com/openssl/openssl/commit/64193c8218540499984cd63cda41f3cd49... Alan DeKok. - List info/subscribe/unsubscribe? See http://www.freeradius.org/list/users.html