Networking – How to find out the backdoor on your computer with network monitor

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As a personal user, how can we detect the path of the backdoor or virus and remove it with network monitor?

Best Answer

Wow. That's a vague question. What operating system? What do you mean "with network monitor?" I'm going to assume your question is this:

How can I tell if something has installed a backdoor on one of my systems over the network?

There's two main tools you'll use: First, nmap to scan the system and see if it's listening on any ports it shouldn't be. Second, ethereal/wireshark/tcpdump to look at the network traffic leaving the system and see if there's anything strange in there.