This must be the most broad question to ask, but through the years, i've come up with my own list of things I so to secure my servers, I follow the obvious steps I could gather online such as, password length, iptables, /etc/hosts, routes, packets securing, security patches etc..
I would like to know if there is a standard in the industry, doesn't matter if it's public or private sector that I could benchmark my steps against. I know there are few out there, but what could be considered THE standard.