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2820 Firewall : Testing to block port 80 (Web test on Win7)

  • zgap111
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28 Mar 2010 19:39 #61428 by zgap111
Thanks NJH for your input, I did know what DNS was, not sure whether blocking ports actually affected DNS resolution...

Thanks again.

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28 Mar 2010 19:54 #61429 by steveo888
Replied by steveo888 on topic filter rules
General setup
Default action =block

Firewall>> Filter setup
set 1 Default call filter---- Leave as default = Block NetBios
set 2 Rule 1 Default data filter---- Leave as default = Block NetBios->DNS

Then Data Filter set 2 Rule 2 comments (allow web)
Direction ->Lan->wan
source IP = Any
Destination IP Any
Service Type edit Protocol TCP/UDP
Source port 1 ~65535
Destination Port 80~80
fragments dont care
pass if no further match

Data filter set 2 Rule 3 comments (allow DNS)
Direction ->Lan->wan
source IP = Any
Destination IP Any
Service Type edit Protocol TCP/UDP
Source port 1 ~65535
Destination port 53 ~53
fragments dont care
pass if no further match

This for me Blocks all trafic out bar web (80) & DNS(53)
Dont forget to add Https (443)
ps I don't run mine like this but I thought I would see if it works and it does, blocks all but web & DNS

Hope this helps

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  • zgap111
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29 Mar 2010 00:10 #61431 by zgap111
Thanks Steveo, the information is excellent. Makes total sense to me now.

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29 Mar 2010 21:23 #61445 by steveo888
No problem, i've only learnt this stuff from this excellent forum, the firewall on the Vigor 2820 baffled me at first but looking and learning from others here in time it all makes sense.
Regargs
Steveo

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