1 00:00:00,270 --> 00:00:04,980 Can you answer these questions by interpreting a Wireshark capture? 2 00:00:05,970 --> 00:00:13,740 What I'm going to do here is start a Wireshark capture on this interface, and then I'll start these 3 00:00:13,740 --> 00:00:15,870 routers in the topology. 4 00:00:16,350 --> 00:00:24,750 The reason I want to start the Wireshark capture first is I want to show you the routing protocol negotiation 5 00:00:24,750 --> 00:00:26,190 between those two routers. 6 00:00:26,310 --> 00:00:29,610 So I want to capture that in the Wireshark capture. 7 00:00:30,210 --> 00:00:33,480 Now you get these Wireshark captures as part of this course. 8 00:00:33,480 --> 00:00:39,060 So download the attached to Wireshark capture and see if you can answer the questions. 9 00:00:42,390 --> 00:00:47,910 The first question is which version of OSPF is used in the topology? 10 00:00:48,940 --> 00:00:53,710 So which version of OSPF is used on router one and router two? 11 00:00:54,310 --> 00:00:56,110 Is authentication used? 12 00:00:56,140 --> 00:00:58,300 If so, which type of authentication? 13 00:00:59,060 --> 00:01:00,880 What's the password? 14 00:01:00,890 --> 00:01:03,560 So can you sniff the password from this network? 15 00:01:03,950 --> 00:01:10,850 So by simply running Wireshark and looking at the Wireshark capture, are you able to determine what 16 00:01:10,850 --> 00:01:11,900 the password is? 17 00:01:12,380 --> 00:01:15,830 In other words, what password is used by these OSPF routers? 18 00:01:17,150 --> 00:01:19,790 Which OSPF area is used. 19 00:01:19,820 --> 00:01:23,540 Is it area one, area two or another area? 20 00:01:24,290 --> 00:01:26,360 What are the OSPF router priorities? 21 00:01:26,390 --> 00:01:27,890 Default priority is one. 22 00:01:29,140 --> 00:01:31,450 Which Rada is the designated Rada. 23 00:01:32,390 --> 00:01:32,710 Okay. 24 00:01:32,710 --> 00:01:39,310 So you can see here we've got some OSPF advertisements taking place. 25 00:01:39,970 --> 00:01:44,260 I'll do an OSPF filter so that we only see OSPF messages. 26 00:01:44,590 --> 00:01:48,100 And what I'll do here is stop the Wireshark capture. 27 00:01:48,640 --> 00:01:53,500 This will be the Wireshark capture that you have attached to this course. 28 00:01:55,500 --> 00:01:58,350 So I'll save this as OSPF one. 29 00:02:00,610 --> 00:02:07,420 So download the Wireshark capture and see if you can answer these questions yourself. 30 00:02:07,690 --> 00:02:10,180 In the next video I'm going to show you the answers. 31 00:02:10,180 --> 00:02:11,350 So I will. 32 00:02:12,530 --> 00:02:17,060 Show you how to interpret the why shot capture and then answer these questions. 33 00:02:17,300 --> 00:02:23,720 So if necessary, stop the video at this point or pause the video and see if you can answer these questions 34 00:02:23,720 --> 00:02:24,190 yourself. 35 00:02:24,200 --> 00:02:27,330 There's no better way to learn than to try things yourself. 36 00:02:27,350 --> 00:02:30,370 So again, download the Wireshark capture. 37 00:02:30,560 --> 00:02:32,140 See if you can answer the questions. 38 00:02:32,150 --> 00:02:35,900 Otherwise, continue watching and I'll answer the questions.