Quoting Matthew Huff <mh...@ox.com>:
Given the recent DNS amplification attacks, I've audit and updated our
authoritative servers. We are using 9.6.0-P1 now. I've been using the cyrmu
templates, but one thing I see is that the dns queries to the . hint file
are still occuring and are not being denied by our servers. For example:
27-Jan-2009 15:00:22.963 queries: client 64.57.246.146#64176: view
external-in: query: . IN NS +
27-Jan-2009 15:00:23.118 queries: client 64.57.246.146#33146: view
external-in: query: . IN NS +
the named.conf has:
...
...
...
view "external-in" in {
match-clients { any; };
recursion no;
additional-from-auth no;
additional-from-cache no;
zone "." in {
type hint;
file "db.cache";
};
...
...
since you can't put a "allow-query { none; };" in a hint zone, what can I do
to deny the query to the . zone file?
----
Matthew Huff | One Manhattanville Rd
OTA Management LLC | Purchase, NY 10577
http://www.ox.com | Phone: 914-460-4039
aim: matthewbhuff | Fax: 914-460-4139
Hi Matthew,
I'm using the following with 9.5.1:
view "external" {
recursion no;
allow-query-cache { none; };
zone "." IN {
type hint;
file "/var/named/named.ca";
And my logs indicate that the requests for . IN NS are being denied:
Jan 28 08:40:38 web1 named[12337]: client 64.57.246.146#33453: view
external: query (cache) './NS/IN' denied
Jan 28 08:40:39 web1 named[12337]: client 67.192.144.0#41794: view
external: query (cache) './NS/IN' denied
Cheers,
Jay
