Guide to fix TLS 1.3 under Retrozilla 2.2

Open about:config in the URL bar. Then, click with 
the right mouse button at the key/value list
and create new->boolean, input one of the following
key list until you finish them all. Create one key per
line, and set each one to true.

key list:
 
security.ssl3.ecdhe_ecdsa_aes_128_gcm_sha256
security.ssl3.ecdhe_rsa_aes_128_gcm_sha256


All other RetroZilla ciphers were reported to be weak 
with the following ciphers flagged as INSECURE. 
These insecure ciphers should be disabled (toggled false) 
via about:config, filter string rc4_128:

security.ssl3.ecdh_ecdsa_rc4_128_sha
security.ssl3.ecdh_rsa_rc4_128_sha
security.ssl3.ecdhe_ecdsa_rc4_128_sha
security.ssl3.ecdhe_rsa_rc4_128_sha
security.ssl3.rsa_rc4_128_md5
security.ssl3.rsa_rc4_128_sha

Set every value of these to false.

Originally written at 

[0] https://msfn.org/board/topic/177106-running-windows-98-in-2020-and-beyond/page/15/#comment-1174993

and converted to Gopher because of convenience.