- DDOS Mitigation: Minimal response to 'any' queries
- DDOS Mitigation: SERVFAIL caching
- DNSSEC: Automatic creation of CDS, CDSKEY records
- DNSSEC: Negative trust anchors
- EDNS Client-Subnet (ECS) option support for authoritative servers
- EDNS EXPIRE option (client side)
- Management: DNSTAP query/response logging
- Management: Squelch duplicate named servers
- Management: Traffic size statistics (per RSSAC02)
- nxdomain-redirect option
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
#include <sys/types.h> | |
#include <sys/stat.h> | |
#include <fcntl.h> | |
#include <unistd.h> | |
#include <stdio.h> | |
#include <string.h> | |
#include <errno.h> | |
int main(){ | |
int fd; |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
$ dig +noal +ans -t ns twitter.com | |
twitter.com. 1616 IN NS d01-02.ns.twtrdns.net. | |
twitter.com. 1616 IN NS d01-01.ns.twtrdns.net. | |
twitter.com. 1616 IN NS ns1.p34.dynect.net. | |
twitter.com. 1616 IN NS r01-01.ns.twtrdns.net. | |
twitter.com. 1616 IN NS ns4.p34.dynect.net. | |
twitter.com. 1616 IN NS ns3.p34.dynect.net. | |
twitter.com. 1616 IN NS ns2.p34.dynect.net. | |
$ dig +short -t a d01-02.ns.twtrdns.net. |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
$ dig +noal +ans -t ns twtrdns.net | |
twtrdns.net. 86400 IN NS ns4.p34.dynect.net. | |
twtrdns.net. 86400 IN NS ns-370.awsdns-46.com. | |
twtrdns.net. 86400 IN NS ns-1700.awsdns-20.co.uk. | |
twtrdns.net. 86400 IN NS ns2.p34.dynect.net. | |
twtrdns.net. 86400 IN NS ns1.p34.dynect.net. | |
twtrdns.net. 86400 IN NS ns3.p34.dynect.net. | |
twtrdns.net. 86400 IN NS ns-1450.awsdns-53.org. | |
twtrdns.net. 86400 IN NS ns-975.awsdns-57.net. |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
[smbd@suse smbd]$ dig @dns-x.sinet.ad.jp -t any bunka.go.jp +multi [~] | |
; <<>> DiG 9.9.9-P1 <<>> @dns-x.sinet.ad.jp -t any bunka.go.jp +multi | |
; (3 servers found) | |
;; global options: +cmd | |
;; Got answer: | |
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 56950 | |
;; flags: qr aa rd; QUERY: 1, ANSWER: 15, AUTHORITY: 0, ADDITIONAL: 19 | |
;; WARNING: recursion requested but not available |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
[smbd@suse smbd]$ dig @a.dns.jp -t ns bunka.go.jp [~] | |
; <<>> DiG 9.9.9-P1 <<>> @a.dns.jp -t ns bunka.go.jp | |
; (1 server found) | |
;; global options: +cmd | |
;; Got answer: | |
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 60931 | |
;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 4, ADDITIONAL: 5 | |
;; WARNING: recursion requested but not available |
at 2019/01/24 12:00(JST)
- ioss.gov http://dnsviz.net/d/ioss.gov/XEkxfg/dnssec/
- adf.gov http://dnsviz.net/d/adf.gov/XEkzDQ/dnssec/
- peacecorpsoig.gov http://dnsviz.net/d/peacecorpsoig.gov/XEkzLg/dnssec/
- dotideahub.gov http://dnsviz.net/d/dotideahub.gov/XEkyXg/dnssec/
- energystar.gov http://dnsviz.net/d/energystar.gov/XEk4QA/dnssec/
- cnss.gov http://dnsviz.net/d/cnss.gov/XEk4Zg/dnssec/