Hi, We have two internal Windows DNS servers which answer all DNS query by forwarding it to gateway DNS server running in Redhat BIND. But i have a query regarding allowing ROOT DNS query on internal DNS server. Can anyone let me know whether company Internal DNS server should respond to ROOT DNS query. When i execute # dig . NS @my-company-name-server query I am getting complete response Let me know whether enabling ROOT DNS query is a security threat. For more informaton can you read and help us to securely configure our company internal Windows DNS server and its impact of disabling it. ; <<>> DiG 9.3.3rc2 <<>> . NS @10.0.0.1 ; (1 server found) ;; global options: printcmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 34899 ;; flags: qr rd ra; QUERY: 1, ANSWER: 13, AUTHORITY: 0, ADDITIONAL: 10 ;; QUESTION SECTION: ;. IN NS ;; ANSWER SECTION: . 49842 IN NS j.root-servers.net. . 49842 IN NS k.root-servers.net. . 49842 IN NS l.root-servers.net. . 49842 IN NS m.root-servers.net. . 49842 IN NS a.root-servers.net. . 49842 IN NS b.root-servers.net. . 49842 IN NS c.root-servers.net. . 49842 IN NS d.root-servers.net. . 49842 IN NS e.root-servers.net. . 49842 IN NS f.root-servers.net. . 49842 IN NS g.root-servers.net. . 49842 IN NS h.root-servers.net. . 49842 IN NS i.root-servers.net. ;; ADDITIONAL SECTION: j.root-servers.net. 49842 IN A 192.58.128.30 a.root-servers.net. 49842 IN A 198.41.0.4 b.root-servers.net. 49842 IN A 192.228.79.201 c.root-servers.net. 49842 IN A 192.33.4.12 d.root-servers.net. 49842 IN A 128.8.10.90 e.root-servers.net. 49842 IN A 192.203.230.10 f.root-servers.net. 49842 IN A 192.5.5.241 g.root-servers.net. 49842 IN A 192.112.36.4 h.root-servers.net. 49842 IN A 128.63.2.53 i.root-servers.net. 49842 IN A 192.36.148.17 ;; Query time: 34 msec ;; SERVER: 10.0.0.1#53(10.132.1.13) ;; WHEN: Thu Mar 17 17:16:18 2011 ;; MSG SIZE rcvd: 401
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