1 00:00:00,250 --> 00:00:01,890 I know everyone in this demo. 2 00:00:01,960 --> 00:00:04,380 I'm going to show you how to use the firewall. 3 00:00:05,520 --> 00:00:09,660 The firewall is a firewall management tool for Linux operating systems. 4 00:00:10,500 --> 00:00:17,430 We can't say that the Firewall D provides a dynamically managed firewall with support for network and 5 00:00:17,430 --> 00:00:24,840 firewall source that defined the trust level of network connections or interfaces, as we can see here 6 00:00:24,840 --> 00:00:25,470 on the screen. 7 00:00:25,890 --> 00:00:26,940 I'm using demarks. 8 00:00:27,580 --> 00:00:29,240 It's German multiple mixers. 9 00:00:29,700 --> 00:00:37,680 So here on the left side, I'm using this machine in order to test the SS each surface after I'm going 10 00:00:37,680 --> 00:00:42,770 to add the SS Secich surfaced on the main machine and the firewall. 11 00:00:44,070 --> 00:00:47,340 So I'm going to install the firewall deal on the main machine. 12 00:00:47,410 --> 00:00:51,360 Your firewall d enter. 13 00:00:52,520 --> 00:00:57,710 I do have the firewall on my system in case if we don't have it, just run the command. 14 00:00:57,770 --> 00:00:59,320 Yumminess told us why. 15 00:00:59,810 --> 00:01:02,120 Firewall the next safe. 16 00:01:02,120 --> 00:01:08,540 I would like to run the system Sijia in order to enable the firewall D to start and Debord's so system 17 00:01:09,740 --> 00:01:14,720 C to enable then firewall D it into. 18 00:01:16,210 --> 00:01:24,610 Also, if I would like to restart the fire, Waldy, so to run System C, to restart it into. 19 00:01:26,460 --> 00:01:26,730 Good. 20 00:01:26,820 --> 00:01:27,810 So far, so good. 21 00:01:28,680 --> 00:01:32,670 Now, if I would like to show the available options would defy and will. 22 00:01:35,000 --> 00:01:46,010 Dash seemed d dash dash help, as you can see here, we have all the available options that we can run 23 00:01:46,010 --> 00:01:47,840 with the firewall dash. 24 00:01:47,890 --> 00:01:55,070 See in the comment, if I would like to show what is the different zone of the firewall. 25 00:01:55,300 --> 00:02:00,140 So I'm going to render the comment fire or dash CND. 26 00:02:01,530 --> 00:02:09,530 Then space, dash, dash, get dash, difficult dash zone to enter. 27 00:02:10,039 --> 00:02:11,890 So the default zone is public. 28 00:02:12,870 --> 00:02:18,230 Now, if I would like to list all the numbers of boats and surfaces that are open in the firewall. 29 00:02:19,010 --> 00:02:26,120 So I'm going to run the firewall that seemed to then dash dash list dash or. 30 00:02:27,820 --> 00:02:30,490 So you can see it as a surfaces on the board so far. 31 00:02:30,510 --> 00:02:33,040 I don't have any pores that are open. 32 00:02:34,240 --> 00:02:37,520 If I would like to list the surfaces, only the surfaces. 33 00:02:37,810 --> 00:02:44,480 Quiet wall, dash, ACMD dash nationalist dash surfaces enter. 34 00:02:45,010 --> 00:02:48,280 As you can see here, we have the surface that are open on the system. 35 00:02:49,030 --> 00:02:51,790 If I would like to this the posts that are open. 36 00:02:51,910 --> 00:02:59,740 So I'm going to find a firewall that you're seem these dash dash list dash port puts it enter. 37 00:03:00,310 --> 00:03:04,360 So far we don't have any ports that are open on the system. 38 00:03:05,260 --> 00:03:13,150 If I would like to reload the firewall rules to make them active after we add or remove surfaces, I'm 39 00:03:13,150 --> 00:03:16,090 going to use the command firewall that seemed. 40 00:03:16,450 --> 00:03:18,810 Then dash, dash, reload. 41 00:03:19,990 --> 00:03:20,370 Good. 42 00:03:24,470 --> 00:03:30,660 So right now, I would like to add it, Secich surfaces. 43 00:03:31,160 --> 00:03:38,150 So the service this is a service before I'm going to add, just let me check on here on the machine 44 00:03:38,970 --> 00:03:39,980 so we can see here. 45 00:03:40,370 --> 00:03:49,340 So I would like to use a Secich surface in order to access the main machine to see if the system would 46 00:03:49,340 --> 00:03:51,920 allow me to access the mean machine or not. 47 00:03:51,920 --> 00:03:52,600 So hit enter. 48 00:03:52,910 --> 00:03:55,820 As you can see here, Conexion refused. 49 00:03:56,870 --> 00:04:08,710 So what are gonna do right now to go back here and fire you and there is a search surface on the firewall 50 00:04:10,050 --> 00:04:12,290 seemed deeper than dash dash. 51 00:04:12,330 --> 00:04:13,730 We have to make it permanent. 52 00:04:14,070 --> 00:04:19,430 Then dash, dash and then dash surface. 53 00:04:19,519 --> 00:04:22,550 Then as his pitch hits enter. 54 00:04:24,220 --> 00:04:29,470 After we added the surface, then we have to use the reload. 55 00:04:30,640 --> 00:04:33,610 In order to make them active. 56 00:04:35,470 --> 00:04:44,200 Fine, or seeing these dashed, actually, Lord can hear, see or hear success. 57 00:04:44,630 --> 00:04:45,380 So what we did. 58 00:04:45,410 --> 00:04:49,130 We had all of the firewall rules to make them active. 59 00:04:49,790 --> 00:04:54,390 Now, let me check my firewall. 60 00:04:54,530 --> 00:05:01,670 The C and D, then dash, dash wrist dash surfaces inter. 61 00:05:01,880 --> 00:05:06,930 As we can see here, we have the Secich surface under the firewall. 62 00:05:07,670 --> 00:05:16,760 We can also use this command to final dash ACMD and dash dash this dash all you can see here we have 63 00:05:16,770 --> 00:05:17,570 the assistance. 64 00:05:18,410 --> 00:05:26,870 Now I'm going to try to log in from from this machine to the main machine had enter asking for the best 65 00:05:26,870 --> 00:05:27,050 word. 66 00:05:27,990 --> 00:05:36,020 As we can see here, we accessed the main machine through de Secich surface. 67 00:05:37,020 --> 00:05:40,380 I'm going to exit now back to the main machine. 68 00:05:43,260 --> 00:05:52,630 So if I would like to delete or remove the Secich, so I'm going to run the firewall Dasheen D Ashutosh 69 00:05:52,650 --> 00:05:55,930 permanent to make this permanent. 70 00:05:55,950 --> 00:05:57,960 So that I should remove dash. 71 00:05:59,800 --> 00:06:04,080 Surface, then equal is as etch enter. 72 00:06:04,750 --> 00:06:06,850 Now we need to reload 73 00:06:09,970 --> 00:06:10,630 the rules. 74 00:06:12,100 --> 00:06:12,520 Enter. 75 00:06:15,000 --> 00:06:19,470 I'm going to demand to the energy machine just to make sure that. 76 00:06:21,250 --> 00:06:25,630 We don't have an axis scale connection refused perfect. 77 00:06:27,280 --> 00:06:31,240 Next example, if I would like to. 78 00:06:33,090 --> 00:06:33,750 At the port? 79 00:06:33,810 --> 00:06:34,200 No. 80 00:06:35,020 --> 00:06:35,330 The port. 81 00:06:35,350 --> 00:06:39,790 Number of days, secich surface in order to access the main machine. 82 00:06:40,090 --> 00:06:48,250 So I'm going to run the comment five war dash C and D, then dash, dash, permanent dash, dash at 83 00:06:50,050 --> 00:06:51,970 Port Equal. 84 00:06:52,720 --> 00:06:55,060 So the port is twenty two. 85 00:06:55,270 --> 00:06:56,090 This is the port. 86 00:06:56,110 --> 00:06:57,000 Number four days. 87 00:06:57,030 --> 00:06:58,290 Secich surface. 88 00:06:58,790 --> 00:07:00,040 Then after that. 89 00:07:01,180 --> 00:07:06,070 Slash DCB, we need to use the protocol that DCB Tenter. 90 00:07:07,860 --> 00:07:10,230 Then I'm going to reload. 91 00:07:11,610 --> 00:07:15,240 The firewall rules to make them active fire. 92 00:07:16,560 --> 00:07:20,670 That seemed to dash, dash, reload. 93 00:07:21,390 --> 00:07:22,080 Perfect. 94 00:07:23,460 --> 00:07:33,040 I'm going to run the command firewall seen D dash, dash list, dash ports, as we can see. 95 00:07:33,570 --> 00:07:38,400 We have this sports right now open on the system. 96 00:07:39,460 --> 00:07:42,610 Going to the jury machine right now here. 97 00:07:44,450 --> 00:07:46,350 As you can see here, we have. 98 00:07:48,030 --> 00:07:53,040 Access to the man machine using the search surface. 99 00:07:54,270 --> 00:08:04,050 If I would like to remove the port firewall, dash C and D, then dash. 100 00:08:04,050 --> 00:08:04,340 Dash. 101 00:08:04,410 --> 00:08:07,850 Permanent or remove. 102 00:08:07,930 --> 00:08:08,830 Dash port. 103 00:08:09,980 --> 00:08:11,260 Twenty two. 104 00:08:12,090 --> 00:08:12,840 Then. 105 00:08:15,060 --> 00:08:18,210 Slash, TCB, hit, enter. 106 00:08:18,450 --> 00:08:19,800 We need to reload. 107 00:08:20,450 --> 00:08:24,380 Well, that C and D dash, dash. 108 00:08:24,560 --> 00:08:25,080 Good. 109 00:08:29,260 --> 00:08:35,919 And I'm going to run the command firewall seeing these dash dash list. 110 00:08:37,220 --> 00:08:40,840 Ports, as you can see here, wouldn't have to port anymore. 111 00:08:42,880 --> 00:08:44,100 Let's conclude with our session. 112 00:08:44,320 --> 00:08:44,830 Thank you. 113 00:08:44,930 --> 00:08:46,270 And see you on the Next List.