s_server -accept 8443 -cert /certs/tls.crt -cert_chain /certs/tls.crt -key /certs/tls.key -verify 1 -CAfile /certs/tls.crt -www 
This TLS version forbids renegotiation.
Ciphers supported in s_server binary
TLSv1.3    :TLS_AES_256_GCM_SHA384    TLSv1.3    :TLS_CHACHA20_POLY1305_SHA256 
TLSv1.3    :TLS_AES_128_GCM_SHA256    TLSv1.2    :ECDHE-ECDSA-AES256-GCM-SHA384 
TLSv1.2    :ECDHE-RSA-AES256-GCM-SHA384 TLSv1.2    :DHE-RSA-AES256-GCM-SHA384 
TLSv1.2    :ECDHE-ECDSA-CHACHA20-POLY1305 TLSv1.2    :ECDHE-RSA-CHACHA20-POLY1305 
TLSv1.2    :DHE-RSA-CHACHA20-POLY1305 TLSv1.2    :ECDHE-ECDSA-AES128-GCM-SHA256 
TLSv1.2    :ECDHE-RSA-AES128-GCM-SHA256 TLSv1.2    :DHE-RSA-AES128-GCM-SHA256 
TLSv1.2    :ECDHE-ECDSA-AES256-SHA384 TLSv1.2    :ECDHE-RSA-AES256-SHA384   
TLSv1.2    :DHE-RSA-AES256-SHA256     TLSv1.2    :ECDHE-ECDSA-AES128-SHA256 
TLSv1.2    :ECDHE-RSA-AES128-SHA256   TLSv1.2    :DHE-RSA-AES128-SHA256     
TLSv1.0    :ECDHE-ECDSA-AES256-SHA    TLSv1.0    :ECDHE-RSA-AES256-SHA      
SSLv3      :DHE-RSA-AES256-SHA        TLSv1.0    :ECDHE-ECDSA-AES128-SHA    
TLSv1.0    :ECDHE-RSA-AES128-SHA      SSLv3      :DHE-RSA-AES128-SHA        
TLSv1.2    :RSA-PSK-AES256-GCM-SHA384 TLSv1.2    :DHE-PSK-AES256-GCM-SHA384 
TLSv1.2    :RSA-PSK-CHACHA20-POLY1305 TLSv1.2    :DHE-PSK-CHACHA20-POLY1305 
TLSv1.2    :ECDHE-PSK-CHACHA20-POLY1305 TLSv1.2    :AES256-GCM-SHA384         
TLSv1.2    :PSK-AES256-GCM-SHA384     TLSv1.2    :PSK-CHACHA20-POLY1305     
TLSv1.2    :RSA-PSK-AES128-GCM-SHA256 TLSv1.2    :DHE-PSK-AES128-GCM-SHA256 
TLSv1.2    :AES128-GCM-SHA256         TLSv1.2    :PSK-AES128-GCM-SHA256     
TLSv1.2    :AES256-SHA256             TLSv1.2    :AES128-SHA256             
TLSv1.0    :ECDHE-PSK-AES256-CBC-SHA384 TLSv1.0    :ECDHE-PSK-AES256-CBC-SHA  
SSLv3      :SRP-RSA-AES-256-CBC-SHA   SSLv3      :SRP-AES-256-CBC-SHA       
TLSv1.0    :RSA-PSK-AES256-CBC-SHA384 TLSv1.0    :DHE-PSK-AES256-CBC-SHA384 
SSLv3      :RSA-PSK-AES256-CBC-SHA    SSLv3      :DHE-PSK-AES256-CBC-SHA    
SSLv3      :AES256-SHA                TLSv1.0    :PSK-AES256-CBC-SHA384     
SSLv3      :PSK-AES256-CBC-SHA        TLSv1.0    :ECDHE-PSK-AES128-CBC-SHA256 
TLSv1.0    :ECDHE-PSK-AES128-CBC-SHA  SSLv3      :SRP-RSA-AES-128-CBC-SHA   
SSLv3      :SRP-AES-128-CBC-SHA       TLSv1.0    :RSA-PSK-AES128-CBC-SHA256 
TLSv1.0    :DHE-PSK-AES128-CBC-SHA256 SSLv3      :RSA-PSK-AES128-CBC-SHA    
SSLv3      :DHE-PSK-AES128-CBC-SHA    SSLv3      :AES128-SHA                
TLSv1.0    :PSK-AES128-CBC-SHA256     SSLv3      :PSK-AES128-CBC-SHA        
---
Ciphers common between both SSL end points:
TLS_AES_256_GCM_SHA384     TLS_AES_128_GCM_SHA256     TLS_CHACHA20_POLY1305_SHA256
ECDHE-ECDSA-AES256-GCM-SHA384 ECDHE-ECDSA-AES128-GCM-SHA256 ECDHE-ECDSA-CHACHA20-POLY1305
ECDHE-RSA-AES256-GCM-SHA384 ECDHE-RSA-AES128-GCM-SHA256 ECDHE-RSA-CHACHA20-POLY1305
Signature Algorithms: ECDSA+SHA384:ECDSA+SHA256:Ed25519:RSA-PSS+SHA512:RSA-PSS+SHA384:RSA-PSS+SHA256:RSA+SHA512:RSA+SHA384:RSA+SHA256
Shared Signature Algorithms: ECDSA+SHA384:ECDSA+SHA256:Ed25519:RSA-PSS+SHA512:RSA-PSS+SHA384:RSA-PSS+SHA256:RSA+SHA512:RSA+SHA384:RSA+SHA256
Supported groups: x25519:secp256r1:secp384r1
Shared groups: x25519:secp256r1:secp384r1
---
New, TLSv1.3, Cipher is TLS_AES_256_GCM_SHA384
SSL-Session:
    Protocol  : TLSv1.3
    Cipher    : TLS_AES_256_GCM_SHA384
    Session-ID: C1E62CB1AA38ED7D9D8259FCFAF9BC43D2BB241FD5B865CA2155FB0C2F1BB794
    Session-ID-ctx: 01000000
    Resumption PSK: 6CDD9F14616BAC98CAB0628EB0604D3372D9DFE4716064BCEF4C95F04D2356BEAADB1B0B45BC57668AAA012CE5F65AA7
    PSK identity: None
    PSK identity hint: None
    SRP username: None
    Start Time: 1789684360
    Timeout   : 7200 (sec)
    Verify return code: 0 (ok)
    Extended master secret: no
    Max Early Data: 0
---
   0 items in the session cache
   0 client connects (SSL_connect())
   0 client renegotiates (SSL_connect())
   0 client connects that finished
  68 server accepts (SSL_accept())
   0 server renegotiates (SSL_accept())
  37 server accepts that finished
   5 session cache hits
  15 session cache misses
   0 session cache timeouts
   0 callback cache hits
   0 cache full overflows (128 allowed)
---
no client certificate available