On 20-02-2025 08:40, Mark Andrews wrote:
The zone is available publicly, but from public serveres not hosted by me
(one.com).
And points to my external ip.
My internal bind redirects local traffic directly to local servers on local
ip's.
DNSSEC is designed to stop spoofed answers being accepted. When you create a
local zone that overrides what is in the public zones you are effectively
spoofing answers. As you have a DNSSEC signed public zone if you want to have
these spoofed answers accepted you need to do one of the following:
1) create a working chain of trust that links to your private zone content
Long 1 is the best long term solution....
So this is the way I will try to go.
You currently have the following DS which means you are using ECDSAP256SHA256
(13) as the DNSSEC key algorithm.
jungersen.dk. 7200 IN DS 26658 13 2
23E45B495015A14C3F4FF57C0A36850C013B881BAAF1E32EE4C0C839 FF9CCA52
I would add “dnssec-policy { csk lifetime unlimited algorithm ECDSAP256SHA256;
};” to your internal primary if you choose to do 1 or 3. This will add a
DNSKEY record to the zone and cause it to be signed. You can then take the
generated DNSKEY and install it as a trust anchor on the postfix boxes.
You will need to do some reading first. Others here can give you more advice.
I have now read a lot, and I think that actually understood some of it.
I have:
zone "jungersen.dk" {
type master;
file "/etc/bind/zones/db.jungersen.dk";
allow-transfer { 192.168.20.11; };
dnssec-policy { csk lifetime unlimited algorithm
ECDSAP256SHA256; };
};
in named.conf.local
I throws an error, /etc/bind/named.conf.local:15: expected string near '{'
Line 15 is the dnssec-policy line.
If I uncomment this line all is well.
Can anyone tell me what is wrong with this line?
I have copy pasted it from the suggestion, and have read some online, to
me it looks good.
????
BR
Danjel
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