: Suspecious DNS queries dropped by Firewall
To: bind-users@lists.isc.org
Date: Tuesday, 13 December, 2011, 9:12 PM
At 04:46 13-12-2011, babu dheen wrote:
In what situation, DNS packet size can exceed more than 512 bytes. In fact,
my gateway
DNS TXT records used for DKIM, for example.
Regards,
-sm
Hi there,
On Wed, 14 Dec 2011 babu dheen wrote:
Can you tell me list of URL which size exceed 514 bytes to verify
whether my internal server truncate/return failure code when query
such URL using UDP query?
You really ought to be able to do this for yourself.
Find any domain using DNSSEC
On 14.12.11 17:21, babu dheen wrote:
In this case, do you think that internal users trying to send emails
directly to internet?
Maybe, maybe not. DNS queries can come from many other applications.
Email delivery is taken care by Email Gateway device, obviously, DKIM
verification (if enabled)
At 03:51 14-12-2011, babu dheen wrote:
In this case, do you think that internal users trying to send emails
directly to internet?
No.
Email delivery is taken care by Email Gateway device, obviously,
DKIM verification (if enabled) can only be done by Email gateway of
my company... How does
On Wed, Dec 14, 2011 at 3:51 AM, babu dheen babudh...@yahoo.co.in wrote:
In this case, do you think that internal users trying to send emails
directly to internet?
Email delivery is taken care by Email Gateway device, obviously, DKIM
verification (if enabled) can only be done by Email
Hi,
Our company users are using internal DNS servers for name resolution and
internal DNS servers are configured to forward the DNS query to company gateway
DNS servers for external queries
User -- internal DNS server --- gateway DNS server --- internet
But when i look at the
On 13/12/2011 13:04, babu dheen wrote:
Hi,
Our company users are using internal DNS servers for name resolution
and internal DNS servers are configured to forward the DNS query to
company gateway DNS servers for external queries
User -- internal DNS server --- gateway DNS server ---
ana...@ripe.net wrote:
From: Anand Buddhdev ana...@ripe.net
Subject: Re: Suspecious DNS queries dropped by Firewall
To: babu dheen babudh...@yahoo.co.in
Cc: bind-users@lists.isc.org
Date: Tuesday, 13 December, 2011, 5:39 PM
On 13/12/2011 13:04, babu dheen wrote:
Hi,
Our company users
On 13/12/11 12:46, babu dheen wrote:
Dear Anand,
In what situation, DNS packet size can exceed more than 512 bytes. In
This has been discussed many times in the list and elsewhere. There's no
need to re-iterate it again.
DNS packets 512 bytes are legal. You should permit them.
In this
EDNS.
Overview of EDNS:
https://en.wikipedia.org/wiki/Extension_mechanisms_for_DNS
-James Keller
--- On *Tue, 13/12/11, Anand Buddhdev /ana...@ripe.net/* wrote:
From: Anand Buddhdev ana...@ripe.net
Subject: Re: Suspecious DNS queries dropped by Firewall
To: babu dheen babudh
At 04:46 13-12-2011, babu dheen wrote:
In what situation, DNS packet size can exceed more than 512
bytes. In fact, my gateway
DNS TXT records used for DKIM, for example.
Regards,
-sm
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