DNS/オープンリゾルバー/atについて、ここに記述してください。
1. vul
89.185.121.250 pns1.netplanet.at.
- Vienna PowerDNS Recursor 4.0.6
37.235.1.177 resolver2.freedns.zone.powered.by.emerion.com.
- PowerDNS Recursor 3.5.3 $Id$
80.243.170.25 dns1.gol.at.
Wels named 4.9.7-Rel-Monday-18-January-99\010\009GregSchueman-LarryKahn-VirajBais-LeonMcCalla
%dig +nocookie -t txt b.sub.mufj.jp @80.243.170.25 ~ ; <<>> DiG 9.12.1 <<>> +nocookie -t txt b.sub.mufj.jp @80.243.170.25 ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: FORMERR, id: 14296 ;; flags: qr rd ra ad; QUERY: 0, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0 ;; WARNING: EDNS query returned status FORMERR - retry with '+noedns' ;; Query time: 274 msec ;; SERVER: 80.243.170.25#53(80.243.170.25) ;; WHEN: Sun Feb 24 21:26:03 JST 2019 ;; MSG SIZE rcvd: 12
%dig +noedns -t txt d.sub.mufj.jp @80.243.170.25 ~ ; <<>> DiG 9.12.1 <<>> +noedns -t txt d.sub.mufj.jp @80.243.170.25 ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 41348 ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 1 ;; QUESTION SECTION: ;d.sub.mufj.jp. IN TXT ;; ANSWER SECTION: d.sub.mufj.jp. 600 IN TXT "Your_cache_server_is_vulnerable." ;; AUTHORITY SECTION: sub.mufj.jp. 120 IN NS ns.sub.mufj.jp. ;; ADDITIONAL SECTION: ns.sub.mufj.jp. 120 IN A 14.192.44.1 ;; Query time: 594 msec ;; SERVER: 80.243.170.25#53(80.243.170.25) ;; WHEN: Sun Feb 24 21:27:06 JST 2019 ;; MSG SIZE rcvd: 109