Am 07.01.2016 um 21:18 schrieb G.W. Haywood:
Hi there, On Thu, 7 Jan 2016, Reindl Harald wrote:... when somebody wants a information which exists in the DNS he can ask for that information - unconditionally
you don't get it if i want to ask for your SOA or NS-records then i ask for themthere is *NO POINT* you can prohibit that unless you need a working nameserver and the only thing you *could* achieve is that i need more queries than normally needed raising the load on your own namesever
what would happen if you can achieve it: * in the best case no difference * in the worst case broken clients and degraded serviceprohibit things just for the sake of prohibit them is clueless, dangerous and unless you have a *real good* reason for your goal you should ask yourself if you *really* have the knowledge to maintain public nameservers - sorry - impossible to say that more polite
laptop3:~$ >>> dig -t any lloyds.co.uk
tells me that there is another clueless idiot degrading services as it often happens - the larger the comapny the more foolish admins
WHAT do the gain with it? NOTHING
; <<>> DiG 9.9.5-9+deb8u4-Debian <<>> -t any lloyds.co.uk ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 21502 ;; flags: qr rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 2, ADDITIONAL: 1 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096 ;; QUESTION SECTION: ;lloyds.co.uk. IN ANY ;; ANSWER SECTION: lloyds.co.uk. 3789 IN HINFO "Please stop asking for ANY" "See draft-jabley-dnsop-refuse-any" lloyds.co.uk. 137094 IN NS dina.ns.cloudflare.com. lloyds.co.uk. 137094 IN NS matt.ns.cloudflare.com. ;; AUTHORITY SECTION: lloyds.co.uk. 137094 IN NS matt.ns.cloudflare.com. lloyds.co.uk. 137094 IN NS dina.ns.cloudflare.com. ;; Query time: 54 msec ;; SERVER: 192.168.44.72#53(192.168.44.72) ;; WHEN: Thu Jan 07 20:17:18 GMT 2016 ;; MSG SIZE rcvd: 197
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