{"id":977,"date":"2021-08-05T20:12:32","date_gmt":"2021-08-05T19:12:32","guid":{"rendered":"https:\/\/www.netexpertise.eu\/fr\/?p=977"},"modified":"2021-10-14T06:46:25","modified_gmt":"2021-10-14T05:46:25","slug":"comment-remplacer-la-livebox-orange-fibre-par-un-cisco-asa","status":"publish","type":"post","link":"http:\/\/www.netexpertise.eu\/fr\/reseau\/cisco\/comment-remplacer-la-livebox-orange-fibre-par-un-cisco-asa.html","title":{"rendered":"Comment Remplacer la LiveBox Orange Fibre par un Cisco ASA"},"content":{"rendered":"\n<p>Vous souhaitez ajouter un firewall <a href=\"\/fr\/category\/reseau\/cisco\">Cisco<\/a> ASA (ou autre) derri\u00e8re votre routeur Orange afin de filtrer le trafic ou monter des VPN? Est-ce vraiment utile de conserver la box dans ce cas?<br>La Livebox ne sert plus qu&rsquo;\u00e0 s&rsquo;authentifier sur le r\u00e9seau Orange, ce qui peut \u00eatre fait sur le Cisco. De plus, elle introduit un SPF &#8211; Single Point of Failure &#8211; suppl\u00e9mentaire sur votre r\u00e9seau. Autant s&rsquo;en d\u00e9barrasser compl\u00e8tement!<br><br><\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img src=\"\/uploads\/cyberspace-data-wire-electronic-2784907-e1628151361244.jpg\" alt=\"Livebox Cisco ASA\"\/><\/figure><\/div>\n\n\n\n<h2><br>VLAN sur l&rsquo;Interface Externe du Cisco<\/h2>\n\n\n\n<p>Orange connecte sa box \u00e0 la fibre gr\u00e2ce \u00e0 un adaptateur, la LiveBox n&rsquo;a donc que des interfaces ethernet, tout comme le firewall.<br>En ce qui concerne la configuration, Orange fait passer 2 types de trafic &#8211; Internet et la t\u00e9l\u00e9phonie sur IP &#8211; sur des vlans d\u00e9di\u00e9s:<br>&#8211; 835 pour la data<br>&#8211; 851 pour la t\u00e9l\u00e9phonie<\/p>\n\n\n\n<p>Le r\u00e9seau interne est sur le vlan 10 dans mon cas puisque j&rsquo;ai plusieurs sous-r\u00e9seaux, on aurait pu le laisser sur l&rsquo;interface physique \u00e9videmment.<br>Il suffit donc d&rsquo;ajouter le vlan 835 \u00e0 l&rsquo;interface externe comme ceci:<br><br><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"vim\" class=\"language-vim\">!\ninterface GigabitEthernet1\/1\nnameif outside\nsecurity-level 0\nno ip address\n!\ninterface GigabitEthernet1\/1.835\nvlan 835\nnameif Internet\nsecurity-level 0\npppoe client vpdn group cpte_orange\nip address pppoe setroute\n!\ninterface GigabitEthernet1\/3\nnameif local\nsecurity-level 100\nno ip address\n!\ninterface GigabitEthernet1\/3.10\ndescription reseau LOCAL\nvlan 10\nnameif vlan10\nsecurity-level 100\nip address 172.16.10.1 255.255.255.0\n!<\/code><\/pre>\n\n\n\n<h2><br>Authentification PPPoE<\/h2>\n\n\n\n<p>L&rsquo;authentification se fait toujours avec le protocol <a href=\"https:\/\/fr.wikipedia.org\/wiki\/PPPoE\" target=\"_blank\" rel=\"noreferrer noopener\">PPPoE<\/a>, h\u00e9ritage des modems\/routeurs ADSL. Elle se configure plus bas en ajoutant les identifiants fournis par Orange.<br>L&rsquo;adresse IP est ensuite obtenue par DHCP tout simplement.<br><br><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"vim\" class=\"language-vim\">vpdn group cpte_orange request dialout pppoe\nvpdn group cpte_orange localname fti\/abcdefg\nvpdn group cpte_orange ppp authentication chap\nvpdn username fti\/abcdefg password *****\ndhcp-client client-id interface outside\ndhcpd dns 8.8.8.8\ndhcpd lease 3000\ndhcpd auto_config outside\n!<\/code><\/pre>\n\n\n\n<h2><br>Acc\u00e8s \u00e0 Internet par NAT<\/h2>\n\n\n\n<p>A ce stade, le firewall a obtenu une adresse IP et peut communiquer avec l&rsquo;ext\u00e9rieur.<br>Il ne reste plus qu&rsquo;\u00e0 donner acc\u00e8s \u00e0 Internet au mat\u00e9riel situ\u00e9 sur le r\u00e9seau interne via un NAT. J&rsquo;ai ajout\u00e9 quelques r\u00e8gles autorisant le ping, non permis sur les Cisco ASA par d\u00e9faut. Vous avez maintenant remplac\u00e9 votre Livebox Orange par un firewall Cisco ASA.<br><br><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"vim\" class=\"language-vim\">access-list outside_access_in extended permit ip any object lan10\naccess-list outside_access_in extended permit icmp any any echo-reply\naccess-list outside_access_in remark ICMP type 11 for Windows Traceroute\naccess-list outside_access_in extended permit icmp any any time-exceeded\naccess-list outside_access_in remark ICMP type 3 for Cisco and Linux\naccess-list outside_access_in extended permit icmp any any unreachable\nnat (vlan10,outside) source dynamic lan10 interface\naccess-group outside_access_in in interface outside<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>Vous souhaitez ajouter un firewall Cisco ASA (ou autre) derri\u00e8re votre routeur Orange afin de filtrer le trafic ou monter des VPN? Est-ce vraiment utile de conserver la box dans ce cas?La Livebox ne sert plus qu&rsquo;\u00e0 s&rsquo;authentifier sur le r\u00e9seau Orange, ce qui peut \u00eatre fait sur le Cisco. De plus, elle introduit un [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false},"categories":[20,426],"tags":[343,408,324],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v19.13 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Netexpertise - Comment Remplacer la LiveBox Orange Fibre par un Cisco ASA<\/title>\n<meta name=\"description\" content=\"Comment authentifier un firewall Cisco ASA sur le r\u00e9seau Orange fibre tout en se d\u00e9barrassant de la LiveBox internet\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"http:\/\/www.netexpertise.eu\/fr\/reseau\/cisco\/comment-remplacer-la-livebox-orange-fibre-par-un-cisco-asa.html\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Netexpertise - 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