Hello, not sure about the question about “full support”, maybe you can add details. Kamailio supports connection with TLSv1.3: $ openssl s_client -connect kam04.tst.domain.net:5061 -tls1_3 2>&1 | tail -n 10 New, TLSv1.3, Cipher is TLS_AES_256_GCM_SHA384 Server public key is 4096 bit Secure Renegotiation IS NOT supported Compression: NONE Expansion: NONE No ALPN negotiated Early data was not sent Verify return code: 0 (ok) Cheers, Henning From: sr-users <sr-users-bounces(a)lists.kamailio.org> On Behalf Of Helio Sent: Monday, August 15, 2022 8:01 PM To: sr-users(a)lists.kamailio.org Subject: [SR-Users] TLSv1.3 support Hello, I noticed that Kamailio has option TLSv1.2+. Does the Kamailio support full TLSv1.3? Or does it have any restrictions? BR,