<div dir="ltr"><div><div><div><div><div><div><div><div><div><div><div>Ciao Antonio ,<br></div>dopo i chiarimenti del caso ecco le mie soluzioni :<br><br></div>R1. dig @<a href="http://85.37.17.51" target="_blank">85.37.17.51</a> <a href="http://wikipedia.org" target="_blank">wikipedia.org</a><br> ;; ANSWER SECTION:<br> <a href="http://wikipedia.org" target="_blank">wikipedia.org</a>. 404 IN A 91.198.174.192<br><br></div>R2. dig @<a href="http://85.37.17.51">85.37.17.51</a> -x 91.198.174.192 IN PTR +shor<br> <a href="http://text-lb.esams.wikimedia.org">text-lb.esams.wikimedia.org</a>.<br> <br></div>R3. dig @<a href="http://85.37.17.51">85.37.17.51</a> <a href="http://text-lb.esams.wikimedia.org">text-lb.esams.wikimedia.org</a>. IN AAAA +shor<br> 2620:0:862:ed1a::1<br><br></div>R4. dig @<a href="http://85.37.17.51">85.37.17.51</a> -x 2620:0:862:ed1a::1 IN PTR +shor<br> <a href="http://text-lb.esams.wikimedia.org">text-lb.esams.wikimedia.org</a>.<br><br></div>R5. whois 91.198.174.192 | grep inetnum<br> inetnum: 91.198.174.0 - 91.198.174.255<br><br></div>R6. whois 91.198.174.192 | grep country<br> country: NL<br><br></div>R7: whois -h <a href="http://riswhois.ripe.net">riswhois.ripe.net</a> 2620:0:862:ed1a::1 (preso spunto dai colleghi)<br> route6: 2620:0:860::/46<br> origin: AS14907<br> descr: WIKIMEDIA - Wikimedia Foundation Inc., US<br> route6: 2620:0:862::/48<br> origin: AS43821<br> descr: WIKIMEDIA-EU , NL<br><br></div>R8. dig @<a href="http://85.37.17.51">85.37.17.51</a> it. IN NS +shor<br> <a href="http://s.dns.it">s.dns.it</a>.<br> <a href="http://m.dns.it">m.dns.it</a>.<br> <a href="http://a.dns.it">a.dns.it</a>.<br> <a href="http://dns.nic.it">dns.nic.it</a>.<br> <a href="http://r.dns.it">r.dns.it</a>.<br> <a href="http://nameserver.cnr.it">nameserver.cnr.it</a>.<br><br></div>R9. dig @<a href="http://85.37.17.51">85.37.17.51</a> <a href="http://nameserver.cnr.it">nameserver.cnr.it</a>. IN A +shor<br> 194.146.106.30<br> 217.29.76.4 <br> 194.0.16.215 <br> 192.12.192.5<br> 193.206.141.46<br> 194.119.192.34<br><br></div>R10. <font color="#000000"><font face="arial, helvetica, sans-serif">whois
<a href="tel:194.146.106.30" target="_blank">194.146.106.30</a> | grep inetnum</font></font><font color="#000000"><font face="arial, helvetica, sans-serif"><br> inetnum:194.146.106.0
- 194.146.107.255</font></font><font color="#000000"><font face="arial, helvetica, sans-serif"><br> CIDR:<span style="background:rgb(255,255,255) none repeat scroll 0% 0%"><a href="http://194.146.106.30/23" target="_blank">194.146.106.30/23</a><br><br> </span></font></font><font color="#000000"><font face="arial, helvetica, sans-serif">whois
217.29.76.4 | grep inetnum<br> inetnum:217.29.76.0 – <a href="tel:217.29.79.255" target="_blank">217.29.79.255</a></font></font><font color="#000000"><font face="arial, helvetica, sans-serif"><br> CIDR:
</font></font><font color="#000000"><font face="arial, helvetica, sans-serif"><span style="background:rgb(255,255,255) none repeat scroll 0% 0%"><a href="http://217.29.76.4/22" target="_blank">217.29.76.4/22</a></span></font></font><font color="#000000"><font face="arial, helvetica, sans-serif"><br><br> </font></font><br><font color="#000000"><font face="arial, helvetica, sans-serif"><font color="#000000"><font face="arial, helvetica, sans-serif"> whois 194.0.16.215 | grep inetnum<br> inetnum:194.0.16.0 – <a href="tel:217.29.79.255" target="_blank"><font color="#000000">194</font>.<font color="#000000">0</font>.16.255</a></font></font><font color="#000000"><font face="arial, helvetica, sans-serif"><br> CIDR: </font></font><font color="#000000"><font face="arial, helvetica, sans-serif"><span style="background:rgb(255,255,255) none repeat scroll 0% 0%"><a href="http://217.29.76.4/22" target="_blank"><font color="#000000">194</font>.<font color="#000000">0</font>.<font color="#000000">1</font>6.<font color="#000000">0</font>/2<font color="#000000">4</font></a></span></font></font><font color="#000000"><font face="arial, helvetica, sans-serif"> <br> </font></font></font></font><font color="#000000"><font face="arial, helvetica, sans-serif"><br> whois
192.12.192.5 | grep inetnum</font></font><font color="#000000"><font face="arial, helvetica, sans-serif"><br> inetnum:192.12.192.0 –
192.12.193.255</font></font><font color="#000000"><font face="arial, helvetica, sans-serif"><span style="background:rgb(255,255,255) none repeat scroll 0% 0%"><br> CIDR:
<a href="http://192.12.192.5/23" target="_blank">192.12.192.5/23</a></span></font></font><font color="#000000"><font face="arial, helvetica, sans-serif"><br></font></font><br><font color="#000000"><font face="arial, helvetica, sans-serif"><font color="#000000"><font face="arial, helvetica, sans-serif"> whois
193.206.141.46 | grep inetnum<br>
inetnum:193.206.128.0 –
193.206.143.255</font></font></font></font><font color="#000000"><font face="arial, helvetica, sans-serif"><span style="background:rgb(255,255,255) none repeat scroll 0% 0%"><br> CIDR:
<a href="http://193.206.141.46/20" target="_blank">193.206.141.46/20</a></span></font></font><font color="#000000"><font face="arial, helvetica, sans-serif"><br><br></font></font><br><font color="#000000"><font face="arial, helvetica, sans-serif"><font color="#000000"><font face="arial, helvetica, sans-serif"> whois
194.119.192.34 | grep inetnum<br>
inetnum:194.119.192.0 –
194.119.192.255</font></font></font></font><font color="#000000"><font face="arial, helvetica, sans-serif"><span style="background:rgb(255,255,255) none repeat scroll 0% 0%"><br> CIDR:
<a href="http://193.206.141.46/20" target="_blank">19<font color="#000000">4</font>.<font color="#000000">119</font>.<font color="#000000">192</font>.<font color="#000000">0</font>/2<font color="#000000">4</font></a><br></span></font></font><br><span style="font-family:arial,helvetica,sans-serif"><font color="#000000"><span style="background:rgb(255,255,255) none repeat scroll 0% 0%">R11. whois
MM13-RIPE | grep person <br>
person:Maurizio Martinelli<br></span></font></span><p style="margin-bottom:0cm"><span style="font-family:arial,helvetica,sans-serif"><font color="#000000"><span style="background:rgb(255,255,255) none repeat scroll 0% 0%">R1</span></font><font color="#000000"><span style="background:rgb(255,255,255) none repeat scroll 0% 0%">2</span></font><font color="#000000"><span style="background:rgb(255,255,255) none repeat scroll 0% 0%">. dig
</span></font></span>@<a href="http://85.37.17.51">85.37.17.51</a><span style="font-family:arial,helvetica,sans-serif"><font color="#000000"><span style="background:rgb(255,255,255) none repeat scroll 0% 0%"><a href="http://gov.it" target="_blank"> gov.it</a> IN SOA +shor <br>
<a href="http://dns1.fweds-spc.it" target="_blank">dns1.fweds-spc.it</a>. <a href="http://dnsmaster.fastweb.it" target="_blank">dnsmaster.fastweb.it</a>.
<a href="tel:2016060909" value="+12016060909" target="_blank">2016060909</a> 86400 3600 604800 86400</span></font></span></p><p style="margin-bottom:0cm"><span style="font-family:arial,helvetica,sans-serif"><font color="#000000"><span style="background:rgb(255,255,255) none repeat scroll 0% 0%">R1</span></font><font color="#000000"><span style="background:rgb(255,255,255) none repeat scroll 0% 0%">3</span></font><font color="#000000"><span style="background:rgb(255,255,255) none repeat scroll 0% 0%">. dig
</span></font></span><span style="font-family:arial,helvetica,sans-serif"><font color="#000000"><span style="background:rgb(255,255,255) none repeat scroll 0% 0%"><a href="http://gov.it" target="_blank"><span style="font-family:arial,helvetica,sans-serif"><font color="#000000"><span style="background:rgb(255,255,255) none repeat scroll 0% 0%">@85.37.17.51 </span></font></span>gov.it</a> IN NS +shor <br>
<a href="http://dns1.fweds-spc.it" target="_blank">dns1.fweds-spc.it</a>. </span></font></span></p><font color="#000000"><font face="arial, helvetica, sans-serif"><br></font></font><div><div><div>R14.<span style="font-family:arial,helvetica,sans-serif"><font color="#000000"><span style="background:rgb(255,255,255) none repeat scroll 0% 0%">
whois <a href="http://fweds-spc.it" target="_blank">fweds-spc.it</a> | grep Name <br>
Name:Maria Antonietta Gervasio <br><br></span></font></span></div><div><span style="font-family:arial,helvetica,sans-serif"><font color="#000000"><span style="background:rgb(255,255,255) none repeat scroll 0% 0%">R15. dig @<a href="http://85.37.17.51">85.37.17.51</a> net. IN SOA +dnssec +shor<br> <a href="http://a.gtld-servers.net">a.gtld-servers.net</a>. <a href="http://nstld.verisign-grs.com">nstld.verisign-grs.com</a>. 1466028416 1800 900 604800 86400<br> SOA 8 1 900 20160622220656 20160615205656 50762 net. <br> WY4Fd/J9uMNMCAk0Y8IIlP2bT4XsAFLXdWkDAF0tMW+Az5eyIngF6In1<br> GWnQvQU9w/asxajzqSWUpW+31GngBShL3LhiKuTzNK820j2GUftvmfuW <br> w/PXXtOtpoe6ipe1GQZJ61Ts3mcv+S1CCBpeLYqrF8Vp21byfN/RYFyH EVU=<br><br></span></font></span></div><div><span style="font-family:arial,helvetica,sans-serif"><font color="#000000"><span style="background:rgb(255,255,255) none repeat scroll 0% 0%">R16. dig @<a href="http://s.dns.it">s.dns.it</a>. CH TXT version.bind +shor <br> "contact <a href="mailto:info@netnod.se">info@netnod.se</a>"<br><br> dig @<a href="http://m.dns.it">m.dns.it</a>. CH TXT version.bind +shor <br> "milan nameserver"<br><br> dig @<a href="http://a.dns.it">a.dns.it</a>. CH TXT version.bind +shor <br> "rome anycast nameserver"<br><br> dig @<a href="http://dns.nic.it">dns.nic.it</a>. CH TXT version.bind +shor <br> "<HIDDEN>"<br><br> dig @<a href="http://r.dns.it">r.dns.it</a>. CH TXT version.bind +shor <br> "rome nameserver"<br><br> dig @<a href="http://nameserver.cnr.it">nameserver.cnr.it</a>. CH TXT version.bind +shor <br> "9.9.5-3ubuntu0.8-Ubuntu"<br><br></span></font></span></div><div><span style="font-family:arial,helvetica,sans-serif"><font color="#000000"><span style="background:rgb(255,255,255) none repeat scroll 0% 0%">R17. server non raggiungibile dal momento che non ho una connessione IP6<br><br></span></font></span></div><div><span style="font-family:arial,helvetica,sans-serif"><font color="#000000"><span style="background:rgb(255,255,255) none repeat scroll 0% 0%">Ciao , a più tardi.<br><br></span></font></span></div><div><span style="font-family:arial,helvetica,sans-serif"><font color="#000000"><span style="background:rgb(255,255,255) none repeat scroll 0% 0%">Umberto<br></span></font></span></div><div><span style="font-family:arial,helvetica,sans-serif"><font color="#000000"><span style="background:rgb(255,255,255) none repeat scroll 0% 0%"><br><br><br><br><br> <br></span></font></span></div><div><span style="font-family:arial,helvetica,sans-serif"><font color="#000000"><span style="background:rgb(255,255,255) none repeat scroll 0% 0%"><br><br>
</span></font></span></div><div><div><div><div><br><div><div><div><div><div><div><div><div><div><div><br><br><br></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div><div class="gmail_extra"><br><div class="gmail_quote">Il giorno 11 giugno 2016 20:09, Antonio Prado via Internet-e-architetture-di-rete <span dir="ltr"><<a href="mailto:internet-e-architetture-di-rete@list.informagiovani.comunesbt.it" target="_blank">internet-e-architetture-di-rete@list.informagiovani.comunesbt.it</a>></span> ha scritto:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">cari allievi,<br>
<br>
vi propongo alcuni esercizietti per mantenere la mente in allenamento:<br>
<br>
+---+------------------------------------------------------------------+<br>
| 1.| qual e' il RR IN A di <a href="http://wikipedia.org" rel="noreferrer" target="_blank">wikipedia.org</a>? |<br>
+---+------------------------------------------------------------------+<br>
| 2.| qual e' il RR IN PTR di $1? |<br>
+---+------------------------------------------------------------------+<br>
| 3.| qual e' il RR IN AAAA di $2? |<br>
+---+------------------------------------------------------------------+<br>
| 4.| qual e' il RR IN PTR di $3? |<br>
+---+------------------------------------------------------------------+<br>
| 5.| qual e' l'inetnum: di $1? |<br>
+---+------------------------------------------------------------------+<br>
| 6.| qual e' country: di $5? |<br>
+---+------------------------------------------------------------------+<br>
| 7.| qual e' il route6: di $3? |<br>
+---+------------------------------------------------------------------+<br>
| 8.| qual e' un RR IN NS di .it? |<br>
+---+------------------------------------------------------------------+<br>
| 9.| qual e' il RR IN A di $8? |<br>
+---+------------------------------------------------------------------+<br>
|10.| qual e' l'inetnum: (espresso in CIDR) di $9? |<br>
+---+------------------------------------------------------------------+<br>
|11.| qual e' la corrispondente person: del nic-handle MM13-RIPE? |<br>
+---+------------------------------------------------------------------+<br>
|12.| qual e' il RR IN SOA di <a href="http://gov.it" rel="noreferrer" target="_blank">gov.it</a>? |<br>
+---+------------------------------------------------------------------+<br>
|13.| qual e' il nameserver citato in $12? |<br>
+---+------------------------------------------------------------------+<br>
|14.| qual e' il Name: dell'admin contact di $13? |<br>
+---+------------------------------------------------------------------+<br>
|15.| qual e' il RR IN RSIG del SOA di .net? |<br>
+---+------------------------------------------------------------------+<br>
|16.| qual e' il RR CH TXT di version.bind secondo $8 |<br>
+---+------------------------------------------------------------------+<br>
|17.|qual e' il RR CH TXT di version.server secondo <a href="http://yeti-ns.as59715.net" rel="noreferrer" target="_blank">yeti-ns.as59715.net</a>|<br>
+---+------------------------------------------------------------------+<br>
<br>
ecco come formattare le risposte:<br>
<br>
+---+-----------------------------------------------------------------+<br>
| A.| qual e' la somma di 2 e 3? |<br>
+---+-----------------------------------------------------------------+<br>
| B.| qual e' il doppio di $A? |<br>
+---+-----------------------------------------------------------------+<br>
<br>
<br>
RA. 5<br>
RB. 10<br>
<br>
caldeggio un vostro sollecito interessamento<br>
<br>
grazie<br>
--<br>
antonio<br>
<br>
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<br></blockquote></div><br></div>