[rOadToIS]

I heard that some bad guys use packet analysis tools or packet sniffer tools to monitor data sent out from my computer. How can I be protected from this?

[Elvandil]

No.

If you send things out, they can be read by anyone who has access to your internet connection. If they couldn't how would you be able to even navigate to any web sites? It would be like sending out mail in an unknown language. It wouldn't get delivered and no one could read it if it was. Some communications can be encrypted, such as instant messaging, but the majority can be read by packet-sniffers. Do you have some reason to believe that your connection has been tapped into?

[rOadToIS]

No, I read an article about packet analysis recently and just wanted to prevent this problem.
So, you're saying there's no solution to this. Right?
Thanks for the prompt supply by the way.

[Elvandil]

Communication of any type requires that data be sent from one location to another in a format that can be read by both sides. So, no, there is no "solution" because there is no problem. For secure transactions over the internet, there are the encrypted https connections made for just that purpose. But all else can be read by anyone and it needs to be that way for communication to take place.

Is there is specific problem?

[perfume]

Dear Mr.Elvandil,
Glad to see you in the forum.For a while, i couldn't open the microsoft websites unless i added the "s" at the end of the http. I could open other websites without the "s".This behaviour was seen with both IE and Firefox.Couldn't download updates and i actually posted the problem in this site.

[Elvandil]

Originally Posted by perfume

Dear Mr.Elvandil,
Glad to see you in the forum.For a while, i couldn't open the microsoft websites unless i added the "s" at the end of the http. I could open other websites without the "s".This behaviour was seen with both IE and Firefox.Couldn't download updates and i actually posted the problem in this site.

Please post in your own thread.

Your "problem" is not a problem. Many sites require a secure connection, https instead of http.

[perfume]

Dear Mr.Elvandil,
Iam sorry if i have wasted your time.I seek your pardon.

[lunarlander]

In a LAN setting where we use switches, ARP spoofing is one way to eavesdrop on a connection. Basically, the attacker on your LAN tries to tell your PC that his PC is the router, so that all your traffic goes to him first. He can record your traffic and send them to the real router.
I googled and found this application called Xarp which claims that it can detect this kind of attack :
http://www.chrismc.de/development/xarp/index.html

[rOadToIS]

Originally Posted by lunarlander

In a LAN setting where we use switches, ARP spoofing is one way to eavesdrop on a connection. Basically, the attacker on your LAN tries to tell your PC that his PC is the router, so that all your traffic goes to him first. He can record your traffic and send them to the real router.
I googled and found this application called Xarp which claims that it can detect this kind of attack :
http://www.chrismc.de/development/xarp/index.html

Can I use ZA firewall's ARP protection feature to prevent this attack?

[Elvandil]

The best way to prevent eaves-dropping is to secure your connection to its entry point with the ISP. But like phone calls, someone tapping in is possible but very unlikely.