For the past two days, whenever I turn on my computer, it has been giving me a message:
“This IP address is being used by another system on the network”
My msn messenger does not get sign in and my yahoo signs out by itself and some other silly things happenning to my pc.
Is my computer being hacked?
Re: Single IP address
Someone else is using the same IP address.. If you are using DHCP then try the following at DOS prompt…
ipconfig/release
ipconfig/renew
You may get a new IP address
OR
I can sell you a new IP address for 5 bucks cash.
Re: Single IP address
^ How can someone else use exactly the same IP address? A similar one I understand, but SAME???
What is 'DHCP'?
Re: Single IP address
Dynamic Host Configuration Protocol…
When you boot your machine it will request an IP address from the DHCP server.
Now if some smart aleck manually (Static IP) has configured his machine with the same IP address then when your system comes up the DHCP server will lease you the next available IP which by coincidence is the same as the one grabbed by Smart Aleck, your machine will respond that the address is in use.
You have two choices, Find Mr. Smart Aleck and kill him and destroy his machine or send be 5 bucks cash and I will give you a new IP address. 
Re: Single IP address
okay I’ll give you 5 bucks for free if you live in the same city as mine but Im not sending any by bank draft or whatever.
What I need to know is that is Mr. Smart Aleck able to look inside my machine and the data or obtain ANY sort of information about me, my machine, etcetra by using my IP address??
Re: Single IP address
NO…If you have firewall.
Give me your address I will come pick up 5 bucks + interest
Re: Single IP address
^ What if I do not have a firewall?? 
oyye :bash: interest kiss baat ka oye??
I live near the hospital
Re: Single IP address
Highly unlikely. If DHCP server assigns an address to a machine, and same IP address is used as a STATIC IP address on another machine, the DHCP server will block the first machine and will send the message to the first machine.
To me it looks like a case where DHCP server is not in use and each machine has a STATIC IP address. Get another IP address from the IT.
Or the trick could be to arrive in the office earlier than anyone else ;).
Re: Single IP address
What I need to know is that is Mr. Smart Aleck able to look inside my machine and the data or obtain ANY sort of information about me, my machine, etcetra by using my IP address??
If he/she is using your IP address, then you are offline and not connected to net, hence no one can connect to your machine. No two machines with the same IP address can exist on the same network for more than a few seconds. Only one will stay online at a time.
Now that being said, your network administrator has the right to look into your machine. It is especially easy if your administrative shares are not disabled.
Re: Single IP address
Or the trick could be to arrive in the office earlier than anyone else ;).
ain't gonna work... i never shutdown my PC ;)