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lock files for users from inet

Posted on 2001-09-18
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Last Modified: 2010-04-13
hi

how do i lock the access to files, i shared for network users, for internet users?
what is the best way to do that?

i'm using w2k pro on this PC
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Question by:reggler
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by:AvonWyss
ID: 6491785
Don't bind the Microsoft Network Client to the adapter you're using to connect to the internet. However, if this is the very same adapter, you cannot do this so that you'd have to fall back to some firewall software.

Of course, as long as the Guest account remains disabled, anonymous access is not permitted so that your files can only be accessed when properly authenticated.

If your drive is formatted with NTFS, you can also enforce security by setting specific file access rights so that only the users supposed to allowed to read your files can access them.
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by:reggler
ID: 6492567
if i will use a firewall, what ports do i have to disable for that?
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by:AvonWyss
ID: 6492590
Best thing is to close all ports except the ones you need (incoming). For most private users, it's okay to completely close the PC except for outbound connections and some special ones which are triggered by outoing connections (FTP-Data, ICQ...).
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by:reggler
ID: 6492691
okay, and then there is no danger for my shared files and folders?
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by:AvonWyss
ID: 6492698
If it's properly configured, no.
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by:reggler
ID: 6492705
what means properly?
if i closed all unused ports?
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Expert Comment

by:AvonWyss
ID: 6492719
go give you better advice, it would be usefulk to know more about your configuration:
* how do you access the internet?
* do you have a separate LAN card for the internal network?
* are you using any protocols but TCP/IP?
* is the guest account enabled?
* are you using NTFS on your drives?
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by:reggler
ID: 6492727
-i access the internet over dial-up connection (ISDN)
-i have seperate LAN adapter for my network
-no, i'm only using TCP/IP
-yes, guets account is enabled
-on the server (file server, router, firewall) i'm using NTFS, on one workstation i also use NTFS and on two others i use FAT32
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by:AvonWyss
ID: 6492916
Is the server W2K Pro or Server? If it is server, how are you sharing the internet connection (ICS or NAT)?

As general rule, computers "behind" the ICS or NAT cannot be accessed directly, so you don't have to worry about their security in the first place but only the one of the server (of course it's also good to make precausions in the internal network, also to prevent damage by malicious programs) which connects to the net.

By default, Dial-Up entries have no binding to the FIle&Printer sharing, meaning that you cannot access these services from within the internat. However, depending on the settings you made, this is possible.
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by:reggler
ID: 6492925
okay, i'm using w2k pro an the server....
okay....thx for intormations.
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by:AvonWyss
ID: 6492937
Ok. In Pro, you can check the bindings of the Dial-Up adapter as follows:
"Start" -> "Settings" -> "Network", open the properties of your Internet-connection, click on "Network". The "File and printer sharing" should NOT be activated in order to avoid people accessing your shares from within the net. Note that the vers same setting must be checked in the properties of your LAN connection.
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by:modder
ID: 6535756
reggler and RideOn are duplicate accounts and have been closed.

Please advise as to who should get the points.

modder
Community Support
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AvonWyss earned 50 total points
ID: 6535845
Since I was the only expert writing in this Q, I guess there's not much to discuss about who gets the points ;-)
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by:modder
ID: 6535853
:P
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