On Fri, 21 Feb 2020 at 11:08, Tim via users <users@lists.fedoraproject.org> wrote:
> On Thu, 2020-02-20 at 21:34 -0800, Samuel Sieb wrote: > > Any critical system daemons are 1024 and below. The reason the high > > ports are left open is for user applications to be able to > > communicate without users having to figure out the firewall. > > Beyond the usual (HTTP, mail, DNS servers, etc), what is the average > non-admin user going to set up that listens as a server? Admin-users > setting up those traditional services ought to know how to manage > firewalls, or they ought not to mess around with those services. > The linux user base is so diverse that talking about the average user isn't very useful. Before retiring I worked with scientists whose computer background included those who started out with Fortran on mainframes (CDC) that had minimal security and no internet, biologists replacing Windows (7) with linux, and numerical modellers who are focused on intricate computations. All these groups have no background in system administration or security. > Thanks to the forever moving target closed-source things like ICQ, MSN, > Yahoo messenger (some of which have gone by the way of the dodo), there > isn't much in the way of Linux-based clients for those kind of things > that need to have listening ports. > In the scientific community there is a trend towards services to perform calculations on a robust "server" using a GUI client (browser or Java app) on a laptop. "Notebook" in a browser applications like Jupyter and Rstudio Server have large user bases. -- George N. White III
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