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CC-TP3-PL17-Respostas1.txt
304 lines (229 loc) · 8.62 KB
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CC-TP3-PL17-Respostas1.txt
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--a)
MacBook-Pro-de-Cesario:/ cp74$ vi etc/resolv.conf
#
# macOS Notice
#
# This file is not consulted for DNS hostname resolution, address
# resolution, or the DNS query routing mechanism used by most
# processes on this system.
#
# To view the DNS configuration used by this system, use:
# scutil --dns
#
# SEE ALSO
# dns-sd(1), scutil(8)
#
# This file is automatically generated.
#
domain eduroam.uminho.pt
nameserver 193.137.16.65
nameserver 193.137.16.145
nameserver 193.137.16.75
Resposta: É a configuração DNS do Sistema Operativo.
--b)
MacBook-Pro-de-Tiago:~ tiagofraga$ host www.google.pt
www.google.pt has address 216.58.211.35
www.google.pt has IPv6 address 2a00:1450:4003:809::2003
MacBook-Pro-de-Tiago:~ tiagofraga$ host www.google.com
www.google.com has address 216.58.211.36
www.google.com has IPv6 address 2a00:1450:4003:809::2004
Resposta: www.google.pt has IPv6 address 2a00:1450:4003:809::2003
www.google.com has IPv6 address 2a00:1450:4003:809::2004
--c)
MacBook-Pro-de-Cesario:/ cp74$ host -t NS ccg.pt
ccg.pt name server ns1.ccg.pt.
ccg.pt name server ns3.ccg.pt.
MacBook-Pro-de-Tiago:~ tiagofraga$ host -t NS pt.
pt name server e.dns.pt.
pt name server ns2.nic.fr.
pt name server a.dns.pt.
pt name server b.dns.pt.
pt name server c.dns.pt.
pt name server ns.dns.br.
pt name server d.dns.pt.
pt name server sns-pb.isc.org.
pt name server ns2.dns.pt.
MacBook-Pro-de-Tiago:~ tiagofraga$ host -t NS .
. name server l.root-servers.net.
. name server i.root-servers.net.
. name server m.root-servers.net.
. name server j.root-servers.net.
. name server c.root-servers.net.
. name server d.root-servers.net.
. name server f.root-servers.net.
. name server k.root-servers.net.
. name server a.root-servers.net.
. name server g.root-servers.net.
. name server h.root-servers.net.
. name server b.root-servers.net.
. name server e.root-servers.net.
--------------------------------------------------
MacBook-Pro-de-Cesario:/ cp74$ nslookup
> set type=NS
> ccg.pt.
Server: 193.137.16.65
Address: 193.137.16.65#53
Non-authoritative answer:
ccg.pt nameserver = ns1.ccg.pt.
ccg.pt nameserver = ns3.ccg.pt.
MacBook-Pro-de-Cesario:/ cp74$ nslookup
> set type=NS
> pt.
Server: 193.137.16.65
Address: 193.137.16.65#53
Non-authoritative answer:
pt nameserver = ns.dns.br.
pt nameserver = b.dns.pt.
pt nameserver = a.dns.pt.
pt nameserver = ns2.nic.fr.
pt nameserver = c.dns.pt.
pt nameserver = d.dns.pt.
pt nameserver = ns2.dns.pt.
pt nameserver = e.dns.pt.
pt nameserver = sns-pb.isc.org.
MacBook-Pro-de-Cesario:/ cp74$ nslookup
> set type=NS
> .
Server: 193.137.16.65
Address: 193.137.16.65#53
Non-authoritative answer:
. nameserver = g.root-servers.net.
. nameserver = i.root-servers.net.
. nameserver = f.root-servers.net.
. nameserver = m.root-servers.net.
. nameserver = c.root-servers.net.
. nameserver = d.root-servers.net.
. nameserver = h.root-servers.net.
. nameserver = k.root-servers.net.
. nameserver = l.root-servers.net.
. nameserver = a.root-servers.net.
. nameserver = j.root-servers.net.
. nameserver = b.root-servers.net.
. nameserver = e.root-servers.net.
Authoritative answers can be found from:
a.ROOT-SERVERS.net internet address = 198.41.0.4
b.ROOT-SERVERS.net internet address = 199.9.14.201
c.ROOT-SERVERS.net internet address = 192.33.4.12
d.ROOT-SERVERS.net internet address = 199.7.91.13
e.ROOT-SERVERS.net internet address = 192.203.230.10
f.ROOT-SERVERS.net internet address = 192.5.5.241
G.ROOT-SERVERS.net internet address = 192.112.36.4
h.ROOT-SERVERS.net internet address = 198.97.190.53
i.ROOT-SERVERS.net internet address = 192.36.148.17
j.ROOT-SERVERS.net internet address = 192.58.128.30
k.ROOT-SERVERS.net internet address = 193.0.14.129
l.ROOT-SERVERS.net internet address = 199.7.83.42
m.ROOT-SERVERS.net internet address = 202.12.27.33
a.ROOT-SERVERS.net has AAAA address 2001:503:ba3e::2:30
Resposta : Em cima, demonstramos duas formas distintas de obter os name servers para os diferentes dominios.
--d)
MacBook-Pro-de-Tiago:~ tiagofraga$ nslookup eureka.software.
Server: 193.137.16.65
Address: 193.137.16.65#53
Non-authoritative answer:
Name: eureka.software
Address: 104.196.112.191
----------------------------
MacBook-Pro-de-Cesario:/ cp74$ if curl -s eureka.software. >/dev/null
> then
> echo "online"
> else
> echo "offline"
> fi
online
------------------------------
Resposta : Como é possivel verificar, nos prints em cima existe dominio para o endereço especificado, no entanto, este endereço nao é um host.
--e)
MacBook-Pro-de-Tiago:~ tiagofraga$ dig ami.pt.
; <<>> DiG 9.9.7-P3 <<>> ami.pt.
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 21893
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 3
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;ami.pt. IN A
;; ANSWER SECTION:
ami.pt. 472 IN A 80.172.230.24
;; AUTHORITY SECTION:
ami.pt. 472 IN NS ns2.ami.pt.
ami.pt. 472 IN NS ns1.ami.pt.
;; ADDITIONAL SECTION:
ns1.ami.pt. 1335 IN A 80.172.230.28
ns2.ami.pt. 1121 IN A 5.199.172.41
;; Query time: 46 msec
;; SERVER: 193.137.16.65#53(193.137.16.65)
;; WHEN: Tue Mar 20 10:12:04 WET 2018
;; MSG SIZE rcvd: 119
Resposta: O endereço primário é 80.172.230.24, e podemos dizer que este servidor primário aceita queries recursivas visto que no campo 'flags', a flag RA está ativa.
--f)
MacBook-Pro-de-Cesario:/ cp74$ nslookup
> set type=MX
> presidencia.pt
Server: 193.137.16.65
Address: 193.137.16.65#53
Non-authoritative answer:
presidencia.pt mail exchanger = 10 mail1.presidencia.pt.
presidencia.pt mail exchanger = 50 mail2.presidencia.pt.
Authoritative answers can be found from:
presidencia.pt nameserver = ns2.presidencia.pt.
presidencia.pt nameserver = ns1.presidencia.pt.
presidencia.pt nameserver = ns02.fccn.pt.
mail1.presidencia.pt internet address = 192.162.17.31
mail2.presidencia.pt internet address = 192.162.17.32
ns02.fccn.pt internet address = 193.136.2.228
Resposta: As mensagens dirigidas a marcelo@presidencia.pt sao entregues nos endereços : mail1.presidencia.pt internet address = 192.162.17.31;
mail2.presidencia.pt internet address = 192.162.17.32
--g)MacBook-Pro-de-Cesario:/ cp74$ nslookup
> set type=SOA
> www.whitehouse.gov
Server: 193.137.16.65
Address: 193.137.16.65#53
Non-authoritative answer:
www.whitehouse.gov canonical name = wildcard.whitehouse.gov.edgekey.net.
wildcard.whitehouse.gov.edgekey.net canonical name = e4036.dscb.akamaiedge.net.
Authoritative answers can be found from:
dscb.akamaiedge.net
origin = n0dscb.akamaiedge.net
mail addr = hostmaster.akamai.com
serial = 1521541758
refresh = 1000
retry = 1000
expire = 1000
minimum = 1800
-------------------------------------
MacBook-Pro-de-Tiago:~ tiagofraga$ host www.whitehouse.gov
www.whitehouse.gov is an alias for wildcard.whitehouse.gov.edgekey.net.
wildcard.whitehouse.gov.edgekey.net is an alias for e4036.dscb.akamaiedge.net.
e4036.dscb.akamaiedge.net has address 23.45.236.110
e4036.dscb.akamaiedge.net has IPv6 address 2a02:26f0:7400:192::fc4
e4036.dscb.akamaiedge.net has IPv6 address 2a02:26f0:7400:18e::fc4
Resposta: O endereço endereço ipv4 é o 23.45.236.110.
--f)
MacBook-Pro-de-Cesario:/ cp74$ nslookup
> set type=PTR
> 2001:690:a00:1036:1113::247
Server: 193.137.16.65
Address: 193.137.16.65#53
Non-authoritative answer:
7.4.2.0.0.0.0.0.0.0.0.0.3.1.1.1.6.3.0.1.0.0.a.0.0.9.6.0.1.0.0.2.ip6.arpa name = www.fccn.pt.
Authoritative answers can be found from:
0.9.6.0.1.0.0.2.ip6.arpa nameserver = ns01.fccn.pt.
0.9.6.0.1.0.0.2.ip6.arpa nameserver = ns02.fccn.pt.
0.9.6.0.1.0.0.2.ip6.arpa nameserver = ns03.fccn.pt.
ns02.fccn.pt internet address = 193.136.2.228
ns02.fccn.pt has AAAA address 2001:690:a80:4001::200
MacBook-Pro-de-Cesario:/ cp74$ nslookup
> set type=SOA
> 2001:690:a00:1036:1113::247
Server: 193.137.16.65
Address: 193.137.16.65#53
Non-authoritative answer:
7.4.2.0.0.0.0.0.0.0.0.0.3.1.1.1.6.3.0.1.0.0.a.0.0.9.6.0.1.0.0.2.ip6.arpa name = www.fccn.pt.
Authoritative answers can be found from:
0.9.6.0.1.0.0.2.ip6.arpa nameserver = ns02.fccn.pt.
0.9.6.0.1.0.0.2.ip6.arpa nameserver = ns03.fccn.pt.
0.9.6.0.1.0.0.2.ip6.arpa nameserver = ns01.fccn.pt.
ns02.fccn.pt internet address = 193.136.2.228
Resposta: Através do primeiro comando é possivel observar que conseguimos interrogar o endereço IPv6. Com o auxilio do segundo comando, e do primeiro, percebemos que o contacto do resposavel é o : ns02.fccn.pt internet address = 193.136.2.228