how to enable DHE ciphers on openssl for using on command line

[M K Saravanan <mksarav@xxxxxxxxx>]

Hi,

Do I need to do any config to enable DHE based ciphers in openssl for
command line usage?

$ openssl s_client -cipher 'DHE_RSA_WITH_AES_128_GCM_SHA256' -connect
10.10.16.100:443
Error with command: "-cipher DHE_RSA_WITH_AES_128_GCM_SHA256"
139775998456896:error:140E6118:SSL
routines:ssl_cipher_process_rulestr:invalid
command:ssl/ssl_ciph.c:1028:

mksarav@ubuntu1804:~$ openssl version
OpenSSL 1.1.1d  10 Sep 2019

Non DHE ciphers are working fine with the above command option.  Are
they purposely removed for security reasons? I need to use DHE ciphers
for some testing purpose. Is there anyway can I use it?


with regards,
Saravanan