June 2018
Intermediate to advanced
368 pages
11h 1m
English
Content preview from Managing Mission - Critical Domains and DNS
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Securing zone transfers with TSIG
It is possible to further secure zone transfers between nameservers using Transaction Signatures (TSIG).
This involves the generation of a shared key that will be installed on either side of a master/secondary pair of nameservers:
$ dnssec-keygen -a HMAC-SHA512 -b 512 -n HOST -r /dev/urandom mykey
This will result in a .key file being created:
$ ls Kmykey.+165+34180.key Kmykey.+165+34180.key $ cat Kmykey.+165+34180.key mykey. IN KEY 512 3 165 NiQW6wS0O2OVbmha6/yR0yQa5Ot7Rou7BMz0p3cZQbYeczBl+265YAV+ /eZ/CVNRZRimfPEhM
We will be using the following string:
NiQW6wS0O2OVbmha6/yR0yQa5Ot7Rou7BMz0p3cZQbYeczBl+265YAV+ /eZ/CVNRZRimfPEhMHQ5t8Wa+VG1nA==
The preceding string is the shared key, which must be implemented ...
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