Chris Bannister wrote:
On Tue, Apr 23, 2013 at 09:28:17AM -0500, Richard Owlett wrote:I will be using email, Usenet, browser and occasionally file downloading. Nothing on my system should look/act like a server. I want all programs to access the internet after explicitly asking for permission. The response to the request may be: No Always YES Ask each occurrenceAre you sure you are "looking" at this in the right way? e.g. : http://www.perlmonks.org/?node_id=542341
I wasn't specifying "how" but "end result".Rephrased "A program shall not unexpectedly communicate with outside world."
http://unix.stackexchange.com/questions/30583/why-do-we-need-a-firewall-if-no-programs-are-running-on-your-ports http://wiki.debian.org/Firewalls http://www.techsupportforum.com/forums/f139/is-a-firewall-necessary-408049.html http://www.firewallinformation.com/ http://www.ask.com/question/why-is-a-firewall-necessary http://wiki.answers.com/Q/What_is_a_firewall_and_why_is_it_necessary http://computertutorflorida.com/2011/09/is-a-firewall-necessary/ http://www.techsupportalert.com/freeware-forum/security/9806-firewall-not-needed.html http://askubuntu.com/questions/26736/is-a-firewall-really-necessary-these-days
Thankyou. I've browsed but not read in detail yet.
You may want to look at shorewall, if you decide you need one. http://en.wikipedia.org/wiki/Shorewall http://www.shorewall.net/shorewall_features.htm http://www.shorewall.net/GettingStarted.html http://wiki.debian.org/HowTo/shorewall http://www.linux.org/article/view/shorewall-your-friendly-firewall-part-1-installation-and-basic-configuration- When I had shorewall running the console was flooded with messages about access attempts. root@tal:~# less /etc/sysctl.conf ... # Uncomment the following to stop low-level messages on console #kernel.printk = 3 4 1 3 ...