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Need category based web filtering solution

Posted on 2014-09-20
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Last Modified: 2014-09-21
I need category based web filtering.
Which box or solution I must use.

This way I am managing currently:
I have a CISCO RVS4000 router with a static IP & Small Business server 2011.
I configured my DNS to forward all the request to opendns.com i.e 208.67.222.222
Using opendns I chose the category I wish to block.

All is going well if need to block sites uniformly.


The twist is to disable web filtering to few users.
Changing DNS to ISP DNS does not work as the desktop could not able to resolve local servers IP with ISP DNS.

What do I need to do selectively enable web filtering?

Do I need any UTM?

If yes, which is best suitable for 30 users in minimum pricing?



http://www.sonicwall.com/us/en/products/Network_Security_Content_Filtering_Categories.html
http://www.websense.com/content/support/library/web/v75/triton_web_help/new_cat_prot.aspx#596182
http://www.cisco.com/c/en/us/td/docs/security/web_security/scancenter/sc5126/CategoriesAP.pdf
http://www.fortiguard.com/static/webfiltering.html
https://www.barracuda.com/products/webfilter/features#section_6
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Question by:Akash Bansal
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Accepted Solution

by:
Craig Beck earned 500 total points
ID: 40334538
You could use separate internal DNS servers for your clients.  One would forward to OpenDNS, the other to your ISP.  Choose which users use each DNS server by setting manually on each PC, or via login script.
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Author Comment

by:Akash Bansal
ID: 40334655
Nice idea
There is only one physical server; can i install dns in the same server.  Can i install wins?
How to auto sync two dns servers?

Any utility which can be installed in the same sbs box and can sync with existing dns server and act as dns server?
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Assisted Solution

by:Craig Beck
Craig Beck earned 500 total points
ID: 40334720
WINS is no good for internet queries.

You 'could' install a 3rd-party DNS server and bind it to a second IP on the SBS but unless you're 100% sure your setup is perfect I'd not recommend it as you'd need to configure conditional forwarding, etc.
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Author Comment

by:Akash Bansal
ID: 40334726
Thanks 😊
Cld u recommend any gud thirdparty dns
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Expert Comment

by:Craig Beck
ID: 40335139
PowerDNS may do what you need...

https://www.powerdns.com/index.html
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Author Comment

by:Akash Bansal
ID: 40335384
Managed to setup additional DNS server on the second IP address using
http://dhcp-dns-server.sourceforge.net/

The client computer is getting correct IP of all the hosts .


Except:

_kerberos._tcp.Default-First-Site-Name._sites.dc._msdcs.myname.local
_ldap._tcp.myname.local
_ldap._tcp.Default-First-Site-Name._sites.myname.local

 is not found, thats why having issue while connecting the AD & Exchange.

getting error in DNS log files that this does not found in forwarding server.



I guess this must not be forwarded to the forwarding server but must resolved locally.

Please guide.
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Assisted Solution

by:Craig Beck
Craig Beck earned 500 total points
ID: 40335466
If you conditionally forward requests for myname.local they should be forwarded to the other IP on the SBS box.
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LVL 2

Author Comment

by:Akash Bansal
ID: 40335527
Great!
Its done n over.

Thanks Craigbeck! :)

You did a great help to me.
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Author Closing Comment

by:Akash Bansal
ID: 40335532
Great approach.
you thinks out of the box.
Really a Guru.
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Expert Comment

by:Craig Beck
ID: 40335602
My pleasure - glad to help :-)
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