security in the operating system

[rubatala]

Hi all,

please what the effect, if i update the security in my system (operating system) in ARCGIS server and portal?

and if i update all the system, what the main risk can happen to arcgis server? 

[RebeccaStrauch__GISP]

I think adding security is always a good think.  I think your question is a little to vague however to know how to answer.  Initially you will probably get 400/500 type error when trying to access you rest endpoints or web pages.  In general terms, I would think you would want to have a SSL cert and use port 443, and using a proxy.  GitHub - Esri/resource-proxy: Proxy files for DotNet, Java and PHP. 

You may want to look through this site for more info Trust | ArcGIS    which talks about security strategies for the different products.