Dns check vulnerabilité

Cette commande permet de vérifier que le serveur dns réponde bien sur différents ports, il doit retourner un great.

dig @serveurdns blaxeen.com porttest.dns-oarc.net TXT

benj@blaxeen :~$dig @ns0.fr.clara.net blaxeen.com  porttest.dns-oarc.net TXT 

; <<>> DiG 9.5.1-P2 <<>> @ns0.fr.clara.net blaxeen.com porttest.dns-oarc.net TXT
; (1 server found)
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 42762
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 2

;; QUESTION SECTION:
;blaxeen.com.                   IN      A

;; ANSWER SECTION:
blaxeen.com.            90000   IN      A       212.43.241.106

;; AUTHORITY SECTION:
blaxeen.com.            90000   IN      NS      ns3.fr.clara.net.
blaxeen.com.            90000   IN      NS      ns4.fr.clara.net.

;; ADDITIONAL SECTION:
ns3.fr.clara.net.       86400   IN      A       212.43.194.83
ns4.fr.clara.net.       86400   IN      A       80.168.69.10

;; Query time: 194 msec
;; SERVER: 212.43.194.2#53(212.43.194.2)
;; WHEN: Thu Apr  2 12:02:55 2009
;; MSG SIZE  rcvd: 125

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 15478
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 1, ADDITIONAL: 1

;; QUESTION SECTION:
;porttest.dns-oarc.net.         IN      TXT

;; ANSWER SECTION:
porttest.dns-oarc.net.  60      IN      CNAME   porttest.y.x.w.v.u.t.s.r.q.p.o.n.m.l.k.j.i.h.g.f.e.d.c.b.a.pt.dns-oarc.net.
porttest.y.x.w.v.u.t.s.r.q.p.o.n.m.l.k.j.i.h.g.f.e.d.c.b.a.pt.dns-oarc.net. 60 IN TXT "212.43.194.2 is GREAT: 26 queries in 4.4 seconds from 26 ports with std dev 18802"

;; AUTHORITY SECTION:
y.x.w.v.u.t.s.r.q.p.o.n.m.l.k.j.i.h.g.f.e.d.c.b.a.pt.dns-oarc.net. 60 IN NS ns.y.x.w.v.u.t.s.r.q.p.o.n.m.l.k.j.i.h.g.f.e.d.c.b.a.pt.dns-oarc.net.

;; ADDITIONAL SECTION:
ns.y.x.w.v.u.t.s.r.q.p.o.n.m.l.k.j.i.h.g.f.e.d.c.b.a.pt.dns-oarc.net. 60 IN A 149.20.58.125

;; Query time: 4946 msec
;; SERVER: 212.43.194.2#53(212.43.194.2)
;; WHEN: Thu Apr  2 12:03:00 2009
;; MSG SIZE  rcvd: 242