Bind stats - denied queries?

[Marc Roos]

Are newer version of bind still logging like this


Nov 30 10:10:02 ns0 named[1303]: rate-limit: info: limit  responses to 
3.9.41.0/24
Nov 30 10:10:02 ns0 named[1303]: rate-limit: info: limit  responses to 
35.177.154.0/24
Nov 30 10:10:02 ns2 named[1241]: rate-limit: info: limit  responses to 
35.177.154.0/24
Nov 30 10:10:02 ns2 named[1241]: rate-limit: info: limit  responses to 
3.9.41.0/24

I already reported, that it is not to smart to log 3.9.41.0/24, better 
could be logged 3.9.41.100/24 so you know the offending ip.




-----Original Message-----
From: Karl Pielorz [mailto:kpielorz_lst at tdx.co.uk] 
Sent: Monday, November 30, 2020 11:08 AM
To: bind-users at lists.isc.org
Subject: Bind stats - denied queries?


Hi,

We've been seeing a huge increase in 'denied queries' against a couple 
of Bind servers we look after (Bind 9.16.9) - these are currently logged 
as:

"
Nov 30 00:00:00 client @0xXXXXX X.X.X.X#48536 (.): query (cache) 
'./ANY/IN' 
denied
"

This appears like it might be someone trying (unsuccessfully) to use us 
as an amplifier / reflector.

We've got Bind's statistics file setup - but I can't see there's any 
entry for these "denied" queries? - As we'd really like to monitor this.

If anyone knows what stat these turn up in the statistics file (if at 
all?)

Thanks,

-Karl
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