DNS ACL ?

From: John Hally (JHally_at_epnet.com)
Date: 11/11/05

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To: "'pen-test@securityfocus.com'" <pen-test@securityfocus.com>
Date: Fri, 11 Nov 2005 08:35:06 -0500

Hello All,

I need a sanity check regarding DNS ACLs. For external facing DNS servers
you need to allow only udp/53 inbound, correct? I know tcp/53 is used for
zone transfers and requests/replies greater than a certain size, but they
shouldn't typically happen for general dns queries correct?

Thanks in advance!

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Relevant Pages

FW: DNS ACL ?
... Subject: DNS ACL? ... queries are sent to the DNS server IP address, ... > Audit your website security with Acunetix Web Vulnerability Scanner: ... Up to 75% of cyber attacks are launched on shopping ...
(Pen-Test)
RE: DNS ACL ?
... forget to allow the DNS servers outbound reply. ... Subject: DNS ACL? ... Audit your website security with Acunetix Web Vulnerability Scanner: ... Up to 75% of cyber attacks are launched on shopping carts, forms, ...
(Pen-Test)
RE: DNS ACL ?
... 53/UDP is used for DNS Queries and 53/TCP is used for Zone ... Audit your website security with Acunetix Web Vulnerability Scanner: ... Up to 75% of cyber attacks are launched on shopping carts, ...
(Pen-Test)
Re: DNS ACL ?
... Exchange use TCP 53 for DNS queries as well, ... For external facing DNS servers ... > Audit your website security with Acunetix Web Vulnerability Scanner: ... Up to 75% of cyber attacks are launched on shopping carts, forms, ...
(Pen-Test)
Re: DNS ACL ?
... } I need a sanity check regarding DNS ACLs. ... For external facing DNS servers ... Audit your website security with Acunetix Web Vulnerability Scanner: ... Cross site scripting and other web attacks before hackers do! ...
(Pen-Test)