Windows Forensics Net File Lab

Net File is a command line utility that demonstrates for you whether or not files are open or closed on the network share drive. The Net File lab shows what you can do remotely to confirm sever-side if files are open, and how to use the utility to closing an open file on the network. [toggle_content title="Transcript"] Hi, Leo Dregier here. I want to talk to you about a command, net file. Net file is a command in which you can view remote systems to see if files are open and closed on that system or if they’re being accessed remotely, and, uh, disconnect users from that. So, the first thing I’m going to do is do a net file. And if I do that, you can see, you know, system error, okay, access denied. Well, that’s simply because, uh, I’m not running as an administrator, but if you opened it up as administrator, you’ll see net file. Yeah, immediately it opens up. So you can see here, net file was the command. The ID is 9. I have a file – a folder here that I’ve shared out, uh, on the C drive, which I’ll pull up right quick. Uh, you can see the share directory here, and the username, Owner, and if there’s a lock on that, uh, or not. Uh, and that’s simply because I basically have this open and access through Network Neighborhood here in another window. So if I run that again, uh, you can see that there’s no entries on the list. Uh, sometimes it’s helpful to kind of go through these a couple different times. Uh, so I’ll show this to you and get it to, to display again. So, let’s do \\CEH-Windows7. Here you can see the share. I have a text document. I have a text document open that I can put some stuff in. Uh, open command prompt. Oops, too fast, CMD, open a command prompt, right click, run as administrator, net file; there you go. You get to have input in it. So, let’s close it. Let’s do 99, uh, close. Okay, and the command completed successfully. Let’s do 100 close. The command completed successfully. And then, 82 close, 82 close, command completed successfully. Do a net file again; there are no entries in the list. So, I’m basically proving that I can disconnect people remotely, um, from that share, at least from the server side. Ah, so be sure to add your comments to the chat dialogue boxes, the messages, and reach out and share thoughts. My name’s Leo Dregier, and I’ll see you in the next video. And I’m sure you’ve connected by now on Facebook, Linkedin, YouTube, and Twitter. [/toggle_content]
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