Morpheus was recently attacked by DoS (Denial Of Service) attack. Well, if you use it to download free music, then let me tell you something you did not know – It was your PC that caused the attack.
Didn’t mean to scare you but IS IT POSSIBLE?
Not quite with a dial up connection, since the IP address is dynamically allotted. But if you have T1, T3, DSL i.e “always on” connection, then your IP address is fixed. Hackers, who snoop the NET can then break into your computer and use it and its high-speed connection to serve as an instrument to perform a Denial of Service (DoS) attack across the Internet. Even bigwigs like Yahoo and Hotmail suffered heavy losses.
(DoS means the software generates data packets, say http requests, and bombards these to a particular web site, continuously using your PC’s high speed connection. This clogs the bandwidth and prevents genuine http requests from accessing the servers. It may cause your PC to stall or crash too.)
What else can one do?
Imagine a good program, a flash file with a beautiful message about friendship and love, cute photos, teddy bears and your friend mailed it to you. Now this cute program captures information about your PC, your credit card information, your on-line transaction details and very sweetly opens some ports on your PC.
(Ports are like gateways or channels for data flow to and fro from your PC. There are several ports. Eg. Port 80 is where http requests travel, smtp (mail) data moves from port 25, whereas pop3 mail data transfers are from port 110. etc.)
Now that the port (read locker) is open, you must be naïve to expect not being robbed!
“Thanks pal, you’ve been so kind to me by lending me your credit card and bank account number. I owe my new car, DVD player, CD collection to you. Sir/Madam, please be kind enough to pay my bills. It will come to you in your monthly statement. Thanx once again!”
F1, F1…i.e. Help! Help! What do I do?
First get a good virus scanner (read my review on Norton Anti-virus 2002).
Second get a good Firewall.
Third be aware, educate yourself about the “dangers” lurking on the NET and apprise yourself of the latest updates and developments by subscriptions to websites like Ciol, Symantec, McAfee etc.
(Firewall are software tools, a technology, that helps prevent intruders from accessing data on your personal computer via the Internet or another network, by keeping unauthorized data from entering or exiting your system. There are hardware firewalls that should be best suited for CIA, FBI, BARC etc, enterprise level softwares that Mr. Gates can purchase for his home PC and softwares like personal firewall that best suits you and me.)
ZONEALARM: Yeh hi right choice baby
Ok this is very costly, its available at https://zonelabs.com and https://cnet.com at a whooping cost of $0.00. Yes! Its FREE! And it’s the best firewall available with many awards.
Download & Setup
I took me 5 minutes to download the 2.8 MB file and 1 min to install. The setup is easy and all one has to do is press “Next”.
Easy interface
The topic of hackers and IP address and TCP/IP fundas…may seem that such a program be best installed by the installer or the champ next door. Wrong! It’s a piece of cake for a person who has just learnt how to boot a PC. Sorry for the exaggeration!
It has easy to navigate buttons:
1) Alerts – Tells you of the recent alerts (about flow of data) and logs these alerts to a text file.
2) Lock – Allows to stop NET activity, allows to configure locking such as lock connection to Internet after xx minutes or when screen saver starts etc.
3) Security – No advance custom settings here. There are 2 parts – local (Intranet) or Internet that can be given different settings for security. Again these are kept simple as high/medium/low that has fixed settings such as block net, file/printer sharing, hide ports etc
4) Programs – That allows certain programs (user specified) to access net or act as servers (for chat, messengers, Netscape etc) OR block other programs through auto learning or ticking or crossing against the application name in the list that builds as one uses them.
5) Configure – that allows/prevents Zone Alarm to stay in system tray, or load at start up etc.
The help button, lock and emergency STOP button (that stops all internet activity immediately) are nice and BIG. The lock and stop options are also available by right clicking on an icon in system tray. And if that is not sufficient, one can a have a broad Zone Alarm desk band on taskbar.
The icon in system tray is dynamic. When net is off – it shows ZA, when its on one can see red and green flickering lights that indicate data being uploaded/downloaded. When you enable lock or stop net activity, the icon is replaced by lock. When your alert setting is such that pop-ups should not occur, the icon displays a red flashing signal.
The Technology
Data packets carry some header information such as source/destination IP address and port details, browser name and version, the request and data. Some of these packets may be “nasty”. A personal firewall software scans the ports for such data packets and filters them out. How they weed differs from program to program and also on hackers intelligence. Earlier firewalls used to check only the name and port path of a program to see if it is legitimate. Today Zone Alarm probes right up to application layer by using a checksum method. “Checksum” is a way to check the actual coding of an application to come up with a very precise sum of its “internal makeup”. If it does not match – it blocks.
What I particularly liked about Zone Alarm is that it does this blocking and guarding job equally good at two fronts – Local or intranet and Internet. It allows different settings for the two. LAN has office people sharing file/printer and can be trusted, so one can set medium or low. Damn it! Its because of Zone Labs that I caught my friend put those wicked photographs on my PC. The Internet will naturally need a “high” setting.
Another useful feature here is the log feature. It is here (C:\Windows\Internet logs\ZALog.txt) that one can see all the attempts that had been made to access your PC or any program that tries to connect to Internet. Thankfully, there has been no breach!
Other bonus featuresThe settings can be saved and password protected. Then again there is Mail Safe feature that scans incoming mails for VBScript files (*.vbs) that are notorious and potential viruses and quarantines them by making them *.zl files.
Conclusion
Zone Alarm 2.6 is indeed a reliable security guard for my PC and its Free. It does block all ports and officials like CNET etc have awarded it after checking its abilities as the best firewall – both in terms of its powerful performance and easy interface. However, advanced users that may understand nitty-gritty of TCP/IP and prefer customized settings, should go for Sygate’s Personal Firewall. I vouch for Zone Alarm as 5/5.
Zone Alarm Pro 3 is just released for $50 and free version i.e. Zone Alarm 3.0 will come in April

- Thank You! We appreciate your effort.