To resolve Nessus Vulnerabilities

20007 SSL Version 2 and 3 Protocol Detection

42873 SSL Medium Strength Cipher Suites Supported

62565 Transport Layer Security (TLS) Protocol CRIME Vulnerability

94437 SSL 64-bit Block Size Cipher Suites Supported (SWEET32)

nano /etc/gitlab/gitlab.rb

Edit the file to show the below

nginx['ssl_ciphers']="HIGH:!aNULL:!MD5:!3DES"

nginx['ssl_prefer_server_ciphers'] = "on"

Then run reconfig

sudo gitlab-ctl reconfigure