Ajoout des fichiers de sauvegarde des fichiers conf du firewall part2 et part3

sisr1/tp06-firewall/fw_part3.nft

@@ -0,0 +1,42 @@
+define netif = enp0s3
+define lanif = enp0s8
+define dmzif = enp0s9
+
+define netip = 192.168.0.130
+define lanip = 172.16.0.254
+define dmzip = 172.17.0.254
+
+define lan-ntw = 172.16.0.1-172.16.0.254
+define dmz-ntw = 172.17.0.1-172.17.0.254
+ 
+table ip ipfilter{
+	chain prerouting {
+                type filter hook prerouting priority filter; policy drop;
+		tcp dport 22 accept
+		icmp type echo-request iif $lanif accept
+		icmp type echo-reply iif {$lanif, $dmzif} accept
+        }
+	chain system_in {
+                type filter hook input priority filter; policy drop;
+		tcp dport 22 accept
+		icmp type echo-request iif $lanif accept
+		icmp type echo-reply accept
+        }
+ 	chain routing {
+                type filter hook forward priority filter; policy drop;
+		icmp type echo-request iif $lanif oif $dmzif accept
+		icmp type echo-reply iif $dmzif oif $lanif accept
+        }
+ 	chain system_out {
+                type filter hook output priority filter; policy drop;
+		tcp sport 22 accept
+		icmp type echo-request accept
+		icmp type echo-reply oif $lanif accept
+        }
+	chain postrouting {
+                type filter hook postrouting priority filter; policy drop;
+		tcp sport 22 accept
+		icmp type echo-request oif {$lanif, $dmzif} accept
+		icmp type echo-reply oif $lanif accept
+        }
+}