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If a PC is connected to the Internet through a router, if no port forwarding or anything is setup there is no way to access that PC from the outside am I right?
Right, but you always should use a personal firewall at your pc, that supports an application firewall.
That's because, you can decide, whether an application is allowed to be started or which application may have access to the internet.Home Network Routers do normally allow all traffic from inside your network through the internet.
So if you get a worm by e.g. by E-Mail, it comes from inside your network and is allowed to access the internet to download other viruses, malware aso.
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Paul is right. Trojans are not called Trojans for nothing. The Trojans wouldn't let the Greeks into their city, they fought tooth and nail to keep them out. But they still got it.
Stuart
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aaa, No. That's not correct. If the PC is online and connected to the net, there is always a way to access it from the outside.
Make sure you're running a good personal firewall, and anti-virus, and spyware detection/removal programs.
Life's more painless for the brainless.
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Jennifer is right, you need a firewall, anti-virus and spyware programs running to minimize the chance of intrusion from outside sources and to scan your computer for them before they can cause harm.
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"there is no way to access that PC from the outside am I right?"
This depends on what you define as access.
If you ran a program like GotoMyPC on your pc you would have no problem getting to your pc via the internet without changing your router settings.
Spyware gets to your computer from the outside just by you web browsing.
Virus's get to you via email or shareware. You download both from "outside"
Can a hacker get to your pc from the internet? Sure if they wanted to bad enough. They have hacked the DoD and you have to figure those folks have state of the art setups.
Imagine the power of knowing how to internet search
http://www.lib.berkeley.edu/TeachingLib/Guides/Internet/FindInfo.html
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To be more safe you should use best practices. The more you use the safer your data is.
I always suggest people use live cd's or a second computer to access the net. I never connect important computers to the net. Only junky old computers that don't have any data that I care to loose are connected.
I read it wrong and answer it wrong too. So get off my case you peanut.
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ah i disagree with the hacked the DOD comment. what they might have got into may appear to be the complete system but you might find it was a honey pot instead. And state of the art ain't going to help much actually not being connected to the net is the best. you will also find that in the DOD any systems of importance are physically not connected to the internet and run using there own communications back bone old lock and key stuff. And to get on my soap box and preach today's security on pc's is quite water tight. bar micro limp(guess who) leaving sloppy code and back doors open. The biggest security risk and week point in the chain is the person using the computer through looking at sites that are dodgy or getting pirated software or installing every piece of free ware they can find. i ran a laptop for two years without security software then one day decided to get it thinking that there must be at least one virus and there was nothing. And i used that laptop at least 2 hours on the web each day playing games(website games) and downloading tones of junk.
I've done alot of research on hacking and the media's image of a boy in some foreign land hacking using his superior tech know how is some what false. what really happens is the kid in question manipulates the user and backs that up with some tech know how. every hack that i have seen at the mo relies on the hacker getting the victim to open there defences. whether it be getting a remote connection established or simply figuring a password out through learning what the target is like.
all text needs typos. There there for the reader to find,to distract them from the total lack of content.
google it! wasnt the answer to the question i asked so dont be dense and give me that repl
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There are so many issues with security. No one (almost) uses just a basic OS. They use applications that interact and cause security holes. Every so many days MS offers patchs for its OS, they don't patch for your applications.
There is no reasonable expectation of data security when connected to the internet. Period. Don't expect it.
I read it wrong and answer it wrong too. So get off my case you peanut.
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Thanks for your replies everyone. But if the computer is behind the router and has a private IP address, how can a computer on the outside possibly get to it unless you connect to it first (apart from using trojans)?
The computer doesn't browse the web or anything so that's not a problem.
Thanks
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You don't need to use a browser to connect to the internet.
E.g.: If you're using Windows XP, during startup, Windows connects to the internet and searches for updates automatically.
If you've installed Quicktime Player, it connects to the internet automatically,
If you've installed RealPlayer, it connects to the internet automatically.
Some more are FlashPlayer, AntiVirus Software aso.
So you don't have to initiate an internet connextion by yourself.
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Yes but all those things I'm guessing are relatively safe unless someone physically gets on the computer and edits the registry or something to make it download updates from a fake server or something.
The only thing I'm worried about is data theft, so is there any way an attacker on the outside could get to it without using trojans? Since it has a private IP I don't see how anyone could connect from the outside without the router having port forwarding setup or something
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