1 00:00:08,300 --> 00:00:09,260 In this lab. 2 00:00:09,260 --> 00:00:13,430 You need to configure static nat to make the network work. 3 00:00:20,940 --> 00:00:27,390 In this topology, we have multiple internal servers that need to be accessed from the outside. 4 00:00:27,750 --> 00:00:36,600 In other words, this PC outside PC one needs to be able to access the HTTP server and FTP server in 5 00:00:36,660 --> 00:00:38,190 the internal network. 6 00:00:38,580 --> 00:00:41,250 This router is our internet facing router. 7 00:00:41,550 --> 00:00:49,560 This interface gigabyte 001 is connected to the internet and this interface is connected to a switch 8 00:00:49,560 --> 00:00:52,110 on the inside of our network. 9 00:00:52,440 --> 00:00:58,350 Here are the router details that you need to configure and then you need to configure a static net so 10 00:00:58,350 --> 00:01:04,709 that the PC on the outside can access the internal HTTP and FTP servers. 11 00:01:05,190 --> 00:01:12,330 To see the internal IP addresses of the servers, click on the server in packet tracer and go to config 12 00:01:12,690 --> 00:01:18,690 interface and you'll be able to see the IP addresses of the internal servers. 13 00:01:19,710 --> 00:01:22,710 So one has an IP address of ten one one 100. 14 00:01:23,010 --> 00:01:26,250 The other 110 one one 101. 15 00:01:26,610 --> 00:01:30,450 However, those are not internet readable addresses. 16 00:01:30,480 --> 00:01:33,440 They are RF C 1918 addresses. 17 00:01:33,450 --> 00:01:35,790 In other words, private IP addresses. 18 00:01:36,120 --> 00:01:42,900 So to allow this PC on the outside to access the servers, you are going to have to configure static 19 00:01:42,900 --> 00:01:46,860 net on the router and use public IP addresses. 20 00:01:47,130 --> 00:01:49,770 The HTTP server has been allocated. 21 00:01:49,770 --> 00:01:54,630 IP address 8.8.8. 200 and the FTP server. 22 00:01:54,660 --> 00:01:56,970 8.82.8.21. 23 00:01:57,300 --> 00:02:05,130 For the HTTP or web server, you're going to configure it to only net the required port number. 24 00:02:05,400 --> 00:02:15,750 So when a user here opens up a web browser and connects to my HTTP dot com, the DNS server will resolve 25 00:02:15,780 --> 00:02:24,870 the IP address to 8.8.8 200, and the router needs to do a static net translation to translate that 26 00:02:24,870 --> 00:02:28,320 to the internal server IP address. 27 00:02:28,500 --> 00:02:35,610 The same is true for FTP, but in this example you're going to do a full net translation using the domain 28 00:02:35,610 --> 00:02:36,900 name my ftp. 29 00:02:37,140 --> 00:02:37,820 Com. 30 00:02:37,830 --> 00:02:45,420 So when the PC opens up an FTP client and connects to my ftp com the DNS server. 31 00:02:47,420 --> 00:02:49,930 Will resolve my FTP. 32 00:02:49,940 --> 00:02:53,720 Welcome to a 2.8.8.201. 33 00:02:54,200 --> 00:03:01,040 The router needs to be configured with that IP address to nat, the IP address to the internal server. 34 00:03:01,690 --> 00:03:04,620 Now, as always, don't just configure. 35 00:03:04,930 --> 00:03:05,920 Verify. 36 00:03:05,920 --> 00:03:10,870 And make sure that things are working the way that you think they working. 37 00:03:11,140 --> 00:03:18,190 Routers and other network devices do what you tell them to do, not what you think they should do. 38 00:03:18,370 --> 00:03:24,670 So verify that you've configured the devices in the way that you think you have. 39 00:03:24,700 --> 00:03:33,550 So verify that both the inside PC, this PC here and outside PC this one here can access the internal 40 00:03:33,550 --> 00:03:38,830 servers because we don't have an internal DNS server in our network. 41 00:03:38,920 --> 00:03:46,280 You need to configure the inside host to use internal IP addresses to connect to the servers. 42 00:03:46,300 --> 00:03:52,720 So in other words, open up a web browser and connect to the IP address of the HTTP server using its 43 00:03:52,720 --> 00:03:56,920 internal or inside IP address on the outside. 44 00:03:57,040 --> 00:04:03,220 Verify that the outside host can connect to these servers using DNS names. 45 00:04:03,400 --> 00:04:04,450 So there you go. 46 00:04:04,480 --> 00:04:07,000 Can you complete this lab? 47 00:04:07,090 --> 00:04:11,770 Can you configure the lab and verify that it's working as it should? 48 00:04:12,220 --> 00:04:17,589 Download the attached packet, trace a file and see if you can complete the lab yourself. 49 00:04:17,860 --> 00:04:20,680 In the next video I'm going to show you how to do this. 50 00:04:20,709 --> 00:04:23,770 But as always, try it yourself first. 51 00:04:24,430 --> 00:04:31,330 These kind of labs are great for verifying that, you know, the CCNA topics and that you are ready 52 00:04:31,330 --> 00:04:33,430 for the CCNA exam.