I'm running BIND 9.8.2rc1-RedHat-9.8.2-0.30.rc1.el6 on
CentOS 6.6. The only zone is for classless reverse DNS, which has been
delegated.
I'm no BIND or DNS expert,
but as I understand it, classless reverse DNS requires recursion.
With recursion set to "any", the server returns
correct PTR records, but also functions as an open DNS server, which is not desired.
With recursion set to localhost, all queries are
denied.
Recursion
any:
64.19.199.56
Server:
slcdns1.redacted.com
Address: 64.19.199.55
Aliases:
55.199.19.64.in-addr.arpa
Non-authoritative
answer:
56.199.19.64.in-addr.arpa canonical name =
56.0-127.199.19.64.in-addr.arpa
56.0-127.199.19.64.in-addr.arpa name =
slcdns2.redacted.com
0-127.199.19.64.in-addr.arpa nameserver = slcdns1.redacted.com
0-127.199.19.64.in-addr.arpa nameserver = slcdns2.redacted.com
slcdns1.redacted.com internet address = 64.19.199.55
slcdns2.redacted.com
internet address =
64.19.199.56
Recursion
localhost:
64.19.199.56
Server:
slcdns1.redacted.com
Address: 64.19.199.55
Aliases:
55.199.19.64.in-addr.arpa
***
slcdns1.redacted.com can't find 56.199.19.64.in-addr.arpa.: Query
refused[/CODE]
Any
thoughts on how I can get this to respond to queries for the reverse zone without
functioning as an open server? Also, is it the correct behavior for the first query to
show as
non-authoritative?
named.conf:
options
{
listen-on port 53 { 10.10.1.55; };
directory
"/var/named";
dump-file "/var/named/data/cache_dump.db";
statistics-file "/var/named/data/named_stats.txt";
memstatistics-file
"/var/named/data/named_mem_stats.txt";
bindkeys-file
"/etc/named.iscdlv.key";
managed-keys-directory
"/var/named/dynamic";
};
logging {
channel default_debug {
file "data/named.run";
severity
debug;
};
};
include
"/etc/named.rfc1912.zones";
include
"/etc/named.root.key";
view "outsiderev"
{
empty-zones-enable no;
allow-recursion { 127.0.0.1;
};
allow-query { none; };
additional-from-auth
no;
additional-from-cache no;
zone
"0-127.199.19.64.in-addr.arpa" {
type master;
file
"/var/named/64.19.199.rev";
allow-update {
10.10.1.56;
};
allow-query {
any;
};
allow-transfer {
10.10.1.56;
};
notify
yes;
};
zone "." IN {
type
hint;
file "named.ca";
};
zone "redacted.com"
{
type master;
file "/var/named/redacted.com.hosts";
allow-update {
10.10.1.56;
};
allow-query
{
any;
};
notify yes;
allow-transfer
{
10.10.1.56;
};
};
zone "0.0.127.in-addr.arpa" {
type
master;
file "/var/named/127.0.0.rev";
allow-update {
none;
};
allow-query {
none;
};
};
zone "localhost" in{
type
master;
file "master.localhost";
};
};
Zone
file:
$ORIGIN
0-127.199.19.64.IN-ADDR.ARPA.
@ IN SOA
slcdns1.redacted.com. administrator.redacted.com.
(
1379648159
10800
3600
604800
38400
)
@ IN NS
slcdns1.redacted.com.
@ IN NS
slcdns2.redacted.com.
55 IN PTR
slcdns1.redacted.com.
56 IN PTR
slcdns2.redacted.com.
...
...
...
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