Simply put, a firewall/intrusion detection soft are tools designed to protect the security of a computer system, to prevent unauthorized access to or from a private network , be it a private network or an individual PC. They are almost one and the same, as a firewall stops unauthorized access by Internet users from accessing private networks connected to the Internet, while intrusion detection system warns about an attempt, logs it and asks you what you want to do about it. They can be both hardware and software, or a combination of both. Usually, all messages entering or leaving the computer system pass through the firewall, which examines each message and blocks those that do not meet the specified security criteria.Today,firewall/intrusion detection soft soft for PC is a MUST. Every time you access a web site, download a file or just log online you unwittingly give ton of info about yourself, your system, where you have been before, ets. Web sites try feeding us ads, cookies, or slip us unwanted Java or Active X scripts. Worse, script kiddies like to scan ports or probe our PCs while we are online(happens to me all the time) or while we are using ICQ or IRCs.
There are several types of firewall techniques:
In practice, many firewalls use two or more of these techniques together.
There are also several products that can watch your connections and ports. Review of them bellow too.Here are reviews of several firewall products(personally I use both BlackICE Defender and At Guard):
BlackICE Defender from NetworkIce.com is an intrusion detection soft
In the end, extremly well done firewall product but hard to use because it stops and ask you if you want to allow ALL outgoing and incoming packetges, plus the documentatiion on it is spotty and not complete.
At Guard has been sold to Norton2000, but you can still find it floating around on the net.
Conclusions: very effective product, has MANY MANY options to play and fiddle with.
Proxomitron(totally free), from http://members.tripod.com/Proxomitron. Very easy to install and use, it will stop cookies, Java, and won't let any info to slip out of your PC. It has a wide range of settings. I would suggest you read the
ZeroLabs has been getting lots of hyped press lately. It's free, yes, and it is supposed to watch which of your programs communicate with the outside world. Unfortunatly, its GUI interface is made with big bold icons, silly looking interface, and besides, lots of other softs already do the same thing. Conclusions: nothing special, get it if you MUST, but why bother, really?Guard Dog Conclusion: Complelty useless piece of crap, you have been had, delete it off your system
Lockedown Conclusions the worse of the lot, boy, are you a sucker!
Program and URL
what it is used for
|CommView from Tamos.com
|for capturing and analizing network packets|
|PacketStorm-Sniffers||a viraety of packets sniffers for non-Win OS like UNIX, ets|
(utilities soft for Win9X, NT)-
filemon, portmon, regimon, ets
|filemon lists all the processes running on your box, portmon watches your ports,
regimon cleans your registery;
| NetMontor soft from
|monitors your ports for ya|
PrcView, TCP/IP View,
|PrcView watches all your NT, Win9X proccesses,
TCP/IP View watches your connections
InZider observes all your NT, Win9X proccesses,
Stay away from the NetBus!
For MUCH more detailed info on what a firewall is, go tocerias.purdue.edu/coast/firewalls/ here are what other people have written about various firewall products: http://www.grc.com/su-firewalls.htm has an excelent review of several great firewalls for PC with screen shots, icluding Black Ice, Signal 9, ets
Here are several more links to check:
For Macs use NetBarrier as a firewall, from www.intego.com or Personal DoorStop-go to versiontracker.com and type that in the search on the bottom. Also, try www.securemac.com