Is an IP address similar to mine an intruder

5 pts.
Tags:
IP address
Wireless networking
My antivirus program tells me that a certain IP address is logging on to my network. the IP address (actually there are 2)is one digit off from mine. My address is 192.168.1.1 and the "intruder" is 192.168.1.2 and 192.168.1.4 What does this mean? If IP addresses are this close does it mean they are in the same house? Thanks in advance!

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It can be multiple things. You may have multiple IP assigned to your computer and your AV sees itself as the primary only. What I would do is install “active ports” at http://download.cnet.com/Active-Ports/3000-2651_4-29653.html?tag=mncol. It sees all connections on your machine within a GUI interface equivalent to running netstat -A at the command line. You may want to review your “DHCP” server (probably your router) and you can see what are the active clients are. You should be able to see the computer name assigned to those other computers. From there you can decide on who are these guys. If you don’t know them, I would recommend you secure your access from the router security feature.

Options:
1) Enable WPA or higher (if using wireless and supported on your wireless card)
2) Disable SSID broadcast (if using wireless)
3) Change default password from router
4) Enable MAC filtering (if using wireless)

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