PORT     STATE SERVICE
6697/tcp open  ircs-u
| ssl-enum-ciphers:
|   TLSv1.0:
|     ciphers:
|       TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA (dh 2048) - C
|       TLS_DHE_RSA_WITH_AES_128_CBC_SHA (dh 2048) - A
|       TLS_DHE_RSA_WITH_AES_256_CBC_SHA (dh 2048) - A
|     compressors:
|
|     cipher preference error: Error when comparing TLS_DHE_RSA_WITH_AES_256_CBC_SHA and TLS_DHE_RSA_WITH_AES_128_CBC_SHA
|     warnings:
|       64-bit block cipher 3DES vulnerable to SWEET32 attack
|       Key exchange (dh 2048) of lower strength than certificate key
|   TLSv1.1:
|     ciphers:
|       TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA (dh 2048) - C
|       TLS_DHE_RSA_WITH_AES_128_CBC_SHA (dh 2048) - A
|       TLS_DHE_RSA_WITH_AES_256_CBC_SHA (dh 2048) - A
|     compressors:
|
|     cipher preference error: Error when comparing TLS_DHE_RSA_WITH_AES_256_CBC_SHA and TLS_DHE_RSA_WITH_AES_128_CBC_SHA
|     warnings:
|       64-bit block cipher 3DES vulnerable to SWEET32 attack
|       Key exchange (dh 2048) of lower strength than certificate key
|   TLSv1.2:
|     ciphers:
|       TLS_DHE_RSA_WITH_AES_256_CBC_SHA (dh 2048) - A
|       TLS_DHE_RSA_WITH_AES_256_CBC_SHA256 (dh 2048) - A
|     compressors:
|
|     cipher preference error: Error when comparing TLS_DHE_RSA_WITH_AES_256_CBC_SHA256 and TLS_DHE_RSA_WITH_AES_256_CBC_SHA
|     warnings:
|       Key exchange (dh 2048) of lower strength than certificate key
|_  least strength: C