{"app":"simulateur-reseau","v":1,"opts":{"strictCables":false,"stpFast":true},"devices":[{"id":"D1","type":"switch","model":"sw-8p","name":"SW1","x":330,"y":130,"powered":true,"cli":"!\nhostname SW1\n!\nline con 0\n logging synchronous\nline vty 0 4\n!","label":""},{"id":"D2","type":"server","model":"srv-linux","name":"SRV-DNS","x":150,"y":320,"powered":true,"ifaces":[{"name":"ens33","ip":"192.168.10.1","mask":"255.255.255.0","dhcp":false}],"gw":"","dns":[],"domain":"","allowIcmpEcho":true,"wifi":{"ssid":"","key":""},"hosts":{},"dhcpd":{"enabled":false,"excluded":[],"pools":[]},"dnsd":{"enabled":false,"records":[],"forwarders":[]},"httpd":{"enabled":false,"https":false,"pages":{"/":{"type":"text/html; charset=utf-8","body":"<html><head><title>SRV-DNS</title></head><body><h1>Bienvenue sur SRV-DNS</h1><p>Serveur web du simulateur.</p></body></html>"}}},"mgmt":{"comms":[],"location":"","contact":"","syslogd":false,"trapd":false},"v6":{"ifs":[{"name":"ens33","autoconf":true,"addrs":[]}],"statics":[]},"label":""},{"id":"D3","type":"pc","model":"pc-win","name":"PC-01","x":510,"y":320,"powered":true,"ifaces":[{"name":"Ethernet0","ip":"192.168.10.100","mask":"255.255.255.0","dhcp":false}],"gw":"","dns":["192.168.10.1"],"domain":"","allowIcmpEcho":true,"wifi":{"ssid":"","key":""},"hosts":{},"dhcpd":{"enabled":false,"excluded":[],"pools":[]},"dnsd":{"enabled":false,"records":[],"forwarders":[]},"httpd":{"enabled":false,"https":false,"pages":{"/":{"type":"text/html; charset=utf-8","body":"<html><head><title>PC-01</title></head><body><h1>Bienvenue sur PC-01</h1><p>Serveur web du simulateur.</p></body></html>"}}},"mgmt":{"comms":[],"location":"","contact":"","syslogd":false,"trapd":false},"v6":{"ifs":[{"name":"Ethernet0","autoconf":true,"addrs":[]}],"statics":[]},"label":""}],"links":[{"a":["D2","ens33"],"b":["D1","Port1"],"type":"straight"},{"a":["D3","Ethernet0"],"b":["D1","Port2"],"type":"straight"}],"notes":"","tpfile":{"v":1,"id":"cours-s08-dns","type":"decouverte","diff":2,"cat":"Cours BTS SIO — S08","level":"BTS SIO SISR 1re année — Bloc 2 — S08","duration":"45 min","title":"S08 — Zone DNS techpro.local : enregistrements A et CNAME","desc":"Le serveur DNS du cabinet TechPro est installé mais sa zone est vide : créer les enregistrements A et les alias CNAME, puis tester la résolution directe et inverse depuis un poste. (Le TP Bind9 complet reste à faire sur la machine virtuelle Debian.)","objectives":["Distinguer un enregistrement A d'un alias CNAME","Alimenter la zone techpro.local du serveur DNS","Tester la résolution directe et inverse avec nslookup et lire la requête DNS dans l'analyseur"],"steps":["Le serveur <code>SRV-DNS</code> (192.168.10.1) et le poste <code>PC-01</code> (DNS = 192.168.10.1) sont prêts. Sur <code>PC-01</code> : <code>nslookup www.techpro.local</code> échoue, car la zone est vide.","Ouvrez <b>SRV-DNS</b> → onglet <b>Services → DNS</b>. Créez les enregistrements <b>A</b> : <code>ns1</code> 192.168.10.1, <code>www</code> 192.168.10.50, <code>mail</code> 192.168.10.51, <code>srv-fichier</code> 192.168.10.20, <code>srv-nas</code> 192.168.10.10 (noms complets en <code>.techpro.local</code>).","Créez les alias <b>CNAME</b> : <code>intranet.techpro.local</code> → <code>www.techpro.local</code> et <code>ftp.techpro.local</code> → <code>srv-fichier.techpro.local</code>. Activez le service DNS.","Sur <code>PC-01</code> : <code>nslookup www.techpro.local</code>, <code>nslookup mail.techpro.local</code>, <code>nslookup intranet.techpro.local</code> (réponse CNAME puis A), et la résolution inverse <code>nslookup 192.168.10.50</code>.","Dans l'analyseur (liaison SRV-DNS – commutateur), filtre <code>dns</code> : repérez la question (type A), la réponse et le champ TTL. Cliquez sur « Vérifier mon travail »."],"checks":[{"t":"cli","label":"www.techpro.local se résout en 192.168.10.50","dev":"PC-01","cmd":"nslookup www.techpro.local","match":"192\\.168\\.10\\.50"},{"t":"cli","label":"mail.techpro.local se résout en 192.168.10.51","dev":"PC-01","cmd":"nslookup mail.techpro.local","match":"192\\.168\\.10\\.51"},{"t":"cli","label":"srv-fichier.techpro.local se résout en 192.168.10.20","dev":"PC-01","cmd":"nslookup srv-fichier.techpro.local","match":"192\\.168\\.10\\.20"},{"t":"cli","label":"L'alias intranet.techpro.local mène à 192.168.10.50 (CNAME)","dev":"PC-01","cmd":"nslookup intranet.techpro.local","match":"192\\.168\\.10\\.50"},{"t":"cli","label":"L'alias ftp.techpro.local mène à 192.168.10.20 (CNAME)","dev":"PC-01","cmd":"nslookup ftp.techpro.local","match":"192\\.168\\.10\\.20"},{"t":"cli","label":"Résolution inverse : 192.168.10.50 donne www.techpro.local","dev":"PC-01","cmd":"nslookup 192.168.10.50","match":"www\\.techpro\\.local"}],"solution":{"app":"simulateur-reseau","v":1,"opts":{"strictCables":false,"stpFast":true},"devices":[{"id":"D1","type":"switch","model":"sw-8p","name":"SW1","x":330,"y":130,"powered":true,"cli":"!\nhostname SW1\n!\nline con 0\n logging synchronous\nline vty 0 4\n!","label":""},{"id":"D2","type":"server","model":"srv-linux","name":"SRV-DNS","x":150,"y":320,"powered":true,"ifaces":[{"name":"ens33","ip":"192.168.10.1","mask":"255.255.255.0","dhcp":false}],"gw":"","dns":[],"domain":"","allowIcmpEcho":true,"wifi":{"ssid":"","key":""},"hosts":{},"dhcpd":{"enabled":false,"excluded":[],"pools":[]},"dnsd":{"enabled":true,"records":[{"name":"ns1.techpro.local","type":"A","data":"192.168.10.1"},{"name":"www.techpro.local","type":"A","data":"192.168.10.50"},{"name":"mail.techpro.local","type":"A","data":"192.168.10.51"},{"name":"srv-fichier.techpro.local","type":"A","data":"192.168.10.20"},{"name":"srv-nas.techpro.local","type":"A","data":"192.168.10.10"},{"name":"intranet.techpro.local","type":"CNAME","data":"www.techpro.local"},{"name":"ftp.techpro.local","type":"CNAME","data":"srv-fichier.techpro.local"}],"forwarders":[]},"httpd":{"enabled":false,"https":false,"pages":{"/":{"type":"text/html; charset=utf-8","body":"<html><head><title>SRV-DNS</title></head><body><h1>Bienvenue sur SRV-DNS</h1><p>Serveur web du simulateur.</p></body></html>"}}},"mgmt":{"comms":[],"location":"","contact":"","syslogd":false,"trapd":false},"v6":{"ifs":[{"name":"ens33","autoconf":true,"addrs":[]}],"statics":[]},"label":""},{"id":"D3","type":"pc","model":"pc-win","name":"PC-01","x":510,"y":320,"powered":true,"ifaces":[{"name":"Ethernet0","ip":"192.168.10.100","mask":"255.255.255.0","dhcp":false}],"gw":"","dns":["192.168.10.1"],"domain":"","allowIcmpEcho":true,"wifi":{"ssid":"","key":""},"hosts":{},"dhcpd":{"enabled":false,"excluded":[],"pools":[]},"dnsd":{"enabled":false,"records":[],"forwarders":[]},"httpd":{"enabled":false,"https":false,"pages":{"/":{"type":"text/html; charset=utf-8","body":"<html><head><title>PC-01</title></head><body><h1>Bienvenue sur PC-01</h1><p>Serveur web du simulateur.</p></body></html>"}}},"mgmt":{"comms":[],"location":"","contact":"","syslogd":false,"trapd":false},"v6":{"ifs":[{"name":"Ethernet0","autoconf":true,"addrs":[]}],"statics":[]},"label":""}],"links":[{"a":["D2","ens33"],"b":["D1","Port1"],"type":"straight"},{"a":["D3","Ethernet0"],"b":["D1","Port2"],"type":"straight"}],"notes":""}}}