About IP (All)

[hawk_al_smith]

How to cover of hide the IP address from other internet users?

In the local net work(between PCs not connected to the net) we can change the IP address, but can we it in the net by some way??

Is there a certain IP address for every e-mail, in case some one sent a virus so we can get him?

How to change your encode your data in your own PC to make it useless for hackers?

[jdharm]

The details of what you are asking involves more space than we have here. For some good explanations try the site <a target="_blank" href=http://computer.howstuffworks.com>http://computer.howstuffworks.com</a>. Or you could post some more specific questions.

Some short answers:

How: You can use a firewall. If someone is going from one address to another looking for a computer at each address, the firewall will stop your computer from answering and makes it look like your computer is not at your address. However, when you are surfing your computer must identify itself to other computers, and it will broadcast its IP address for this. (You could use a anonymity proxy, but that's a whole other discussion.)

In: Could you restate this question, please?

Is: An email will have a record of all the computers it passed through to get to yours, but chances are that the email originated at a computer that was a victim like you, and not the virus writer's. Technically, these kinds of records are how people are caught, but just the info on an email isn't enough for the average user to be able to back-track.

How: There is no one good way to do it, and even if there was there is no such thing as complete protection. The best thing you could do is not let the hackers in to begin with. Again, that is what a firewall is for. It won't stop all hackers, but even a modest firewall like ZoneAlarm will stop the hackers in the meaty part of the bell curve if it is used properly.

Josh

The proceeding was from the "For What It's Worth" files, which by definition may be worthless. Take with a grain or ten of salt.

[hawk_al_smith]

Hi there JOSH,
Thanks a lot for the info., I’m sorry for the silly Qs

About in question, I meant the intranet (bunch of PCs in a building or in a certain area connected with each other on a local network can be access only from one of PCs in that area). The IP appears for each one like this (0.0.0.0) here we can change the IP for each because there on connection with the internet, We can select the one we like (123.025.174.100, 100.123.147.159 or what ever we like, because this new selected IP is not shown for any body on the {internet-the WWW} expect for those on the company’s own web(intranet)

That’s what is meant and I just wanted to check about it.
IS IT RIGHT??!!

THANKS

[jdharm]

They aren't silly questions. They just have really big answers.

There are only about 4.2 billion possible unique addresses. (255*255*255*255 = ) It is within reason to think there will soon be more computers (and other devices that us IP addresses) than that linked to the web in the world. Where do you get more addresses?

The answer is to break the web up into smaller webs. The LAN you speak of is one of these smaller webs. You have hundreds of computers (switches, print servers, etc) that you assign IP addresses to in your LAN. You can assign whatever addresses you like (with a few reserved exceptions), and you have 4.2 billion available to choose from. But since they are connected to the Internet through one gateway computer, they all are found at a single Internet IP address as far as the rest of the world is concerned. This way your company's 300 computers only take up one of the 4.2 billion available Internet IP addresses.

So your LAN is just a smaller version of the Internet. The Internet can have 4.2 billion addresses, and each of them can have a LAN behind them with 4.2 billion addresses, and each of them can have a sub net behind them with 4.2 billion addresses...theoretically it has no end.

Josh

The proceeding was from the "For What It's Worth" files, which by definition may be worthless. Take with a grain or ten of salt.