1 00:00:00,920 --> 00:00:08,990 So at the moment in this typology Ratatouille is running not on fast Ethan it is 0 1 and is being overloading 2 00:00:09,230 --> 00:00:16,190 on that interface to allow Ratto one and Rato for to connect to rodders 3. 3 00:00:16,220 --> 00:00:18,760 So Ping 8 had one that one. 4 00:00:18,780 --> 00:00:26,830 T Rotto one is now able to connect to router 3. 5 00:00:26,840 --> 00:00:28,250 Now this is only for fun. 6 00:00:28,250 --> 00:00:36,870 What I'm going to do now is extend the topology and connect genius 3 to my physical network interface 7 00:00:36,870 --> 00:00:37,760 card. 8 00:00:38,140 --> 00:00:45,830 So I mean it connected to my local area network and what I'll do is add a nother ethernet interface 9 00:00:47,190 --> 00:00:48,730 to Ratatouille. 10 00:00:49,250 --> 00:00:59,850 Sorority's now connected to the outside world on fast Ethernet 1 slash zero so on router to interface 11 00:01:00,090 --> 00:01:01,460 one slash is zero. 12 00:01:01,500 --> 00:01:04,620 No shut IP address DHC. 13 00:01:04,770 --> 00:01:13,660 So that I get an IP address via DHP this interface connects me to my local area network which in turn 14 00:01:13,660 --> 00:01:23,720 connects me to the internet so I can ping the Internet from my Windows PC as an example and I've now 15 00:01:23,720 --> 00:01:28,960 bridged Jeana's 3 to the same network. 16 00:01:29,120 --> 00:01:36,350 The rot has been allocated to this address and this is another reason to use overloading to an interface 17 00:01:36,530 --> 00:01:41,300 because previously we configured an IP address statically. 18 00:01:41,480 --> 00:01:48,050 But on this new interface we don't have an IP address statically configured the IP address is dynamically 19 00:01:48,080 --> 00:01:51,910 configured so we want to overload the interface. 20 00:01:51,950 --> 00:02:00,940 So IP not inside source list specify an access list one which we created previously in this case. 21 00:02:00,950 --> 00:02:05,190 I'm going to overload Ethan at one slash is zero. 22 00:02:06,970 --> 00:02:12,890 To law both hosts to be netted and to be able to connect to the Internet. 23 00:02:13,140 --> 00:02:20,190 So show IP Nachke translations shows no translations at the moment but I've enabled net on this interface 24 00:02:20,460 --> 00:02:22,470 as well as this interface. 25 00:02:22,470 --> 00:02:30,140 So not a one paying Google dot com doesn't work. 26 00:02:30,170 --> 00:02:37,080 I need to enable IP domain lookup and I need to specify a name server. 27 00:02:39,270 --> 00:02:44,390 And in this example I'll just use Google so ping Google dot com. 28 00:02:44,570 --> 00:02:46,190 Sure IP not translations. 29 00:02:46,190 --> 00:02:48,470 I'm not seeing any translations at the moment. 30 00:02:51,060 --> 00:02:52,360 So let's do some troubleshooting. 31 00:02:52,440 --> 00:02:54,500 Show IP raat. 32 00:02:54,700 --> 00:03:03,020 We have a default wrocht to 10 1 1 2 ping 10 1 1 t we can ping the router. 33 00:03:03,490 --> 00:03:06,960 So let's do it D-bag IP Nat on this router. 34 00:03:09,480 --> 00:03:18,160 Also to check whether this router can pin google.com directly the moment it can so IP domain look up 35 00:03:19,000 --> 00:03:23,770 my IP name server specified Google 36 00:03:26,460 --> 00:03:40,740 so that Rodek can ping Google get the local rodded to ping Google let's see if we see a problem if zero 37 00:03:40,750 --> 00:03:42,570 slashes zero is on the inside. 38 00:03:42,570 --> 00:03:43,510 That's right. 39 00:03:45,720 --> 00:03:49,080 If 0 1 is on the outside. 40 00:03:49,280 --> 00:03:50,400 That's correct. 41 00:03:50,810 --> 00:03:55,490 But I forgot to put IP Nat outside on first. 42 00:03:55,490 --> 00:03:57,880 Ethan it once was zero. 43 00:03:57,930 --> 00:04:08,880 So IP not outside needs to be enabled on that interface show IP Nat translations no translations at 44 00:04:08,880 --> 00:04:09,340 the moment. 45 00:04:09,340 --> 00:04:11,600 Let's ping Google dot com. 46 00:04:11,710 --> 00:04:12,540 That looks a lot better. 47 00:04:12,550 --> 00:04:21,260 Ping's succeed and I'm getting my next translation so tender wondered wondered one that Rodda is translated 48 00:04:21,290 --> 00:04:26,960 to 1 2 1 6 8 1 1 15:9 going to google at the top here. 49 00:04:26,960 --> 00:04:33,280 You can see the DNS query to the Google DNS servers and then a reply comes back. 50 00:04:33,290 --> 00:04:41,210 So this router running ingenius 3 is doing DNS queries against Google's DNS server on the internet. 51 00:04:41,210 --> 00:04:45,880 Locally the rod is being netted from 10 1 1 1 to this address. 52 00:04:45,890 --> 00:04:56,720 Now that is a nother RAFC 19:18 address but on Rodek to through DHP Mahratta has learnt that the default 53 00:04:56,750 --> 00:05:05,810 Gateway's 1 9 2 1 6 8 1 2 5 4 which is my local DSL internet router you can see some of the net queries 54 00:05:05,810 --> 00:05:07,140 coming out here. 55 00:05:07,210 --> 00:05:16,210 Let's do a ping again show IP Nat translation there's a net translation in the table. 56 00:05:16,700 --> 00:05:24,650 I could as an example telnet to Google dot com on port 80. 57 00:05:24,840 --> 00:05:25,650 It's connected. 58 00:05:25,650 --> 00:05:27,390 So connection is open. 59 00:05:27,630 --> 00:05:36,930 You can see that the traffic is being nattered there it's going out press control See here you can see 60 00:05:36,930 --> 00:05:39,120 we get some bad HMO. 61 00:05:39,540 --> 00:05:45,140 And the that continues I could as an example go to another Web site. 62 00:05:45,150 --> 00:05:46,860 Let's go to yahoo dot com. 63 00:05:47,890 --> 00:05:54,280 So they had traces 46 of a go to put the port number in. 64 00:05:54,300 --> 00:05:58,950 So the net is taking place but the server denied the connection. 65 00:05:58,950 --> 00:06:06,420 Let's go to port 80 and you can see that the connection is now opened to yahoo dot com and we can see 66 00:06:06,420 --> 00:06:09,110 the translations taking place. 67 00:06:09,290 --> 00:06:18,270 Price controls see we get a bunch of HVM all here and you can see some translations taking place. 68 00:06:18,300 --> 00:06:22,080 Notice he has the body of the HMO. 69 00:06:22,320 --> 00:06:30,800 And if we scroll up we'll probably be able to see some messages from yahoo dot com as an example. 70 00:06:30,840 --> 00:06:37,550 So that's an example of using overloading on two separate interfaces. 71 00:06:37,550 --> 00:06:40,710 In one example we keeping it with ingenius 3. 72 00:06:41,060 --> 00:06:43,930 And then the other example we actually connecting to the Internet.