On 10/07/14 23:53, Angelo Moreschini wrote: > thank you Ed, I learned many things from you. Actually I am a Linux beginner .... Welcome to Linux. Mostly what has been discussed here is networking concepts. The same applies to any network connected device just the location and way the configuration information is stored and handled is different . > > Just another question, if I can, please: > it exists some fix relation between the "port number" of the servers and the theirs IP number ? > > It is some kind of correlation between them ? The analogy of the telephone number and extension is a good one. The only thing I would add is that the extension (port/service) number is generally fixed, standardized. A list is kept by the IANA (Internet Assigned Numbers Authority) and can be seen here.... http://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml -- If you can't laugh at yourself, others will gladly oblige. -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org