How to check if I run an open resolver and close it if it is open ?

sspitfire

Active Member
Mar 5, 2011
28
0
51
I need to disable open resolving and recursive calls . what exactly should i put in named.conf ? openresolver.com says my main ip is not vulnerable to DNS Amplification attacks. but my host is null routing some of my additional IPs saying they're a source of such attack.
 

cPanelMichael

Administrator
Staff member
Apr 11, 2011
47,909
2,228
463
Hello :)

In your /etc/named.conf file, look for:

Code:
view    "external" {
You should see "recursion no;" under this view.

Thank you.