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February 09, 2012, 12:49:43 PM

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Author Topic: windows file sharing  (Read 451 times)
stephan
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« on: March 22, 2003, 08:03:00 PM »
If you are using Windows and have file sharing on (i.e. network neighbourhood and all the rest of that stuff),

make sure that your network shares are not accessible over the internet.

The way to do this varies, depending on which version of windows you are using.

Basically though, goto the properties of your LAN card (or ADSL/modem card if you have one), doubleclick tcp/ip, and untick the box which says "enabled Netbios over TCP/IP"

It's very important. To test if you have done it properly, visit www.grc.com and goto shields up, click on "probe my ports" and "test my shields".
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donavin410
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« Reply #1 on: March 22, 2003, 11:32:00 PM »
Also if you are funning win2k, WinXp WinNT, and you have a NTFS file system you can right click on the folder, Go to the security tab, ad your user name, give your user name full control. Then remove the every one group from the security tab.

That way you user name will be the only one on your network that can access that folder. If you need other people on your network to have access to that folder then just add their user name to the list
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TWebMan
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« Reply #2 on: March 23, 2003, 09:48:00 AM »
It's also a good idea to run a personal firewall such as Zone Alarm.

It's prudent to share as little as possible.  Windows 98 tends to share the entire C drive upon installation...not a good thing.  But the newer versions still have the 'shared folders'.

A good rule of thumb is, if you're not on a network, you don't need to share any folders.  If you are, create one folder you can share, and don't share any more.
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stephan
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« Reply #3 on: March 23, 2003, 06:19:00 PM »
I don't share files on my network.

I really don't trust it!
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donavin410
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« Reply #4 on: March 24, 2003, 12:29:00 AM »
You are correct, not only dose win98 share the c: by default but all windows o.s.'s do. if you right click on you c: you will see a c$. the $ is a administrative hidden share. so once agian you will want to remove the "everyone" group and add you local user account name. If you remove the everyone group and DONT ad your user name you will be unable to access you c:
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TWebMan
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« Reply #5 on: March 24, 2003, 05:29:00 AM »
You are so right, donavan.  XP, however, will just give each user a "My Shared Documents" folder, but still it's an open share.

I kinda have to trust my network, but I have a physical bridge, and a personal firewall on the gateway and on each networked pc.  Did get hacked once, but only through my webserver.  I usually only run that when I'm directly using it for some design.

The beauty of Zone Alarm is it will let you know if a server type virus actually gets far enough to where it runs, and it'll stop it right there.

I figure the best rule of thumb is, stay invisible, and you get passed up (by the viruses, the IP scanners, etc...)
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"Computers cause people to make more mistakes than any other invention in history, with the possible exception of handguns and tequila."  - Unknown
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« Reply #6 on: March 25, 2003, 12:17:00 AM »
I personally don't trust any microsoft security.. it just seems to be patched a little too often!

So I have a different solution for my network:

If you've got an old 486 kicking around you might want to consider installing the floppy disk distro. of freesco (www.freesco.org). I'm running it, and at GRC my router/firewall shows up as completely invisible except for the port 80 public webserver. I have had no problems with people gaining access, and I commenly allow friends to try their best to get in (no DOS attacks). Its a good purpose for an old clunker! Its also free! :-)
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