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Simple question for IIS FTP security gurus

Posted on 2003-10-21
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Last Modified: 2010-04-11
Can IIS FTP be configured to allow user ID's access only from certain IP subnets?

If so, How is this done?

Alternatively, would another FTP server be a better choice to meet this requirement?

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Question by:swift99
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Expert Comment

by:Rimvis
ID: 9597722
On your FTP site, go to Properties -> Directory Security.
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Kokoglen earned 250 total points
ID: 9599632
Yes, Rimvis shows where the menu is above.

HOWEVER, (Im trying to secure my own FTP server as well) it is possible to spoof an IP address.  Its still a hoop to jump through but the username and password are still sent via clear text.  Ive been researching different options to fix that.

I asked a question on the subject and might be helpful to you.
http://www.experts-exchange.com/Security/Win_Security/Q_20769226.html#9596729
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by:swift99
ID: 9599708
Thanks!
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Expert Comment

by:sh00t3r
ID: 9602044
As opposed to looking at IIS for the answer, which i seldomly find, why don't you edit the FTP rule on ISA to only allow the specified subnets?

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Expert Comment

by:sh00t3r
ID: 9602056
Whoops sorry, thought you were running ISA. Do you have any firewall in place that could proxy the traffic?
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Author Comment

by:swift99
ID: 9602174
ISA ... I'm not sure.  I'm grasping at straws for an upcoming project.  I'll have to check with our infrastructures group.

The problem is that some user ID's need access from the internet, but others can only be permitted access from the intranet.  We need user ID level resolution.  Firewalls only resolve to the IP level.
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by:sh00t3r
ID: 9602337
Not true. An application level firewall has the ability to proxy on an user id basis. I have an SGS 5400 that does just that
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by:swift99
ID: 9602380
I will pass this on to our infrastructure group and see what they can do with it.
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Expert Comment

by:sh00t3r
ID: 9602505
Good luck!

Other then that you'll probably want to investigate another FTP server application besides IIS.
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Author Comment

by:swift99
ID: 9604270
Yeah ... I thought so.  IIS means "It Isnt Secure"

Our server people came up with a solution that fits our existing  architecture this evening.

Points to Kokoglen because the article referenced was most in line with the reasoning that led to the final solution.
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