Visitor counter, Heat Map, Conversion tracking, Search Rank

How to secure your intra-network from external attacks when connected to Internet

{jumi [ads/adsTop]}

In this article I would talk about securing a intra-network from external attacks. The intra-network could be a group of PCs connected to a switch and the switch in turn connected to an Internet Broadband modem. Now we could implement the required security in two ways. First secure all the PCs by loading desktop firewalls in them. Loading those PCs with anti virus software with latest updates. Further more , update the OS with all the required patches. However, we can not do much about the end users. Many a times we are faced with users who have got very little knowledge about computer networks in general. These users invariable would load softwares on to their machines which would comprise their security . One solution, could be that one takes away the administration rights from them and let them use the machine with user rights. Therefore, they would not be able to cause any damage to their system. However, this setup would require configuring each and every machine on the system. Further more, no users would like to be dictated how they should use their machine, after all they own it.

 

So whats the way out. Think of securing the perimeter. This way we need not secure each individual PC and the users are at liberty to do whatever they feel like with their machine, as they are the administrators themselves. As we have got only one gateway to the intra-network in terms of the Ethernet connectivity coming from the Broadband user, to engineer the above setup we could pass it through a Network Firewall. The resulting setup now would be , Ethernet data coming from the broadband router goes to the network firewall's WAN port, the intra-network gets connected to the LAN port of the Network firewall.

Fine, now that we have thought of placing a network firewall, lets see what all is available in the market. Well through money and you can pick up the best of Juniper and alike Firewall. But do we really need all that high end Network Firewall. The answer is , one could easily do a much better job with a Linux based Network Firewall. Did some one say Linux. And the first response one gets is anything but Linux or I have never used Linux etc. This article I have specially target towards those network administrators who have had no experience about Linux, what so ever. We would build a Network firewall and much more in a matter of time from scratch.

To start with get hold of an old PC having two LAN cards and atleast 256MB RAM, 2GB Hard-disk space. Keyboard, mouse and Monitor would be required only during the installation process.

 

Download the latest version of pfsense (Network Firewall ) iso image from http://pfsense.com/download/mirror.php?section=downloads  . Create a installation disk from the image file by burning it on to it using any CD/DVD writing software.

Comments   

0 #160 Karolin 2019-02-14 09:25
Antibiótico e também corticosteróide curado contra ?
Quote
0 #159 i want sex toys 2019-02-02 15:58
Hello just wanted to give you a quick heads up and let you know a few of the images aren't loading correctly.
I'm not sure why but I think its a linking issue.
I've tried it in two different internet browsers and both
show the same outcome.
Quote
0 #158 porn game site 2019-01-31 17:34
Excellent, what a weblog it is! This weblog presents helpful facts
to us, keep it up.
Quote
0 #157 naked butt sex 2019-01-23 21:05
These are actually fantastic ideas in concerning blogging.

You have touched some fastidious things here. Any way keep up wrinting.
Quote
0 #156 Margo 2019-01-15 02:30
Para eles, a auto-imagem atualidade é inaceitável.
Quote
0 #155 Abbey 2019-01-14 14:14
A receita rende cerca de 6 panetones de 500
gramas.
Quote
0 #154 congressdigital.com 2019-01-13 22:11
Será que qualquer um deve tomar Turbo Maca Peruvian?
Quote
0 #153 csszengarden.com 2019-01-13 17:34
Um dos melhores hotéis é Hotel Guarani.
Quote
0 #152 Gelin Askilari 2019-01-11 15:23
My coder is trying to convince me to move to .net from PHP.

I have alwys disliked the idea because of the costs.

Buut he's tryiong none the less. I've been using WordPress on numerous websites for aout
a year and am concerned about switching to another platform.
I have heard very good things abut blogengine.net.
Is there a way I can import all my wordpress contet into it?
Any help would be greatly appreciated!

Heere is my web-site ... Gelin Askilari: http://Www.Kartlikilitsistemleri.site/galin-sabahlik-askilik
Quote
0 #151 http://sextoyu.com 2019-01-06 23:32
Hey there! This post couldn't be written any better!
Reading through this post reminds me of my good old room mate!
He always kept chatting about this. I will forward this page to him.
Pretty sure he will have a good read. Thank you
for sharing!
Quote
0 #150 www.madbursa.org 2019-01-01 21:46
I’m not that much of a domino qգ online uang asⅼi (www.madbursa.org: http://www.madbursa.org/user/Jeanne3063/) reader to be honest but your sites reɑlly nice, keep it
up! I'll ɡo aheaԀ and bookmаrk your site
to come back later on. Cheers
Quote

Add comment


Security code
Refresh