Hi,all
I couldn't visit some websites (URLs)recently.
I viewed my firewall logs and found that it blocked some packet sent from my
computer to DNS( the protocol is UDP, remote port is 53). Did that cause the
problem? If so, should I add the IP address of DNS to the trusted zone? If I
did, could the action be risky?
Thanks.

RE: Blocked packet by firewall by ChrisArd

ChrisArd
Mon Jul 12 11:18:48 CDT 2004

Adding the DNS IP addresses to your IE Trusted zone would not help.
Trusted zone content only applies to web content.
If your firewall is blocking access to DNS, then you need to look at your
firewall.
Personally, I prefer to point my DNS to a local DNS server if possible or
the ISP if that isn't possible.
If you have a local DNS server, configure forwarders on that to point to
the ISPs DNS servers. Let the DNS server do the name to IP resolution for
you rather than your client doing all the work.

Chris Ard
Security Support
Microsoft Corporation

This posting is provided "AS IS" with no warranties, and confers no rights.


Re: Blocked packet by firewall by Robert

Robert
Mon Jul 12 15:06:00 CDT 2004

Now wrote:
> Hi,all
> I couldn't visit some websites (URLs)recently.
> I viewed my firewall logs and found that it blocked some packet sent
> from my computer to DNS( the protocol is UDP, remote port is 53). Did
> that cause the problem?

Possibly.

> If so, should I add the IP address of DNS to
> the trusted zone?

In IE? no that won't help. As Chris says, DNS access isn't controlled via
that.

If your firewall is set to block your system from making DNS queries then I
would suggest you've got it set to a slightly too paranoid setting.

--
--
Rob Moir, Microsoft MVP for servers & security
Website - http://www.robertmoir.co.uk
Virtual PC 2004 FAQ - http://www.robertmoir.co.uk/win/VirtualPC2004FAQ.html

Kazaa - Software update services for your Viruses and Spyware.



RE: Blocked packet by firewall by N

N
Tue Jul 13 01:29:04 CDT 2004

In article <8P0CvvCaEHA.2752@cpmsftngxa06.phx.gbl>, Chris Ard [MSFT] says...

> Adding the DNS IP addresses to your IE Trusted zone would not help.
> Trusted zone content only applies to web content.
> If your firewall is blocking access to DNS, then you need to look at your
> firewall.

I believe the Zone Alarm firewall also has a "Trusted" zone component.

--
Norman
~Win dain a lotica, En vai tu ri, Si lo ta
~Fin dein a loluca, En dragu a sei lain
~Vi fa-ru les shutai am, En riga-lint