1 00:00:05,470 --> 00:00:07,960 IP addresses and ports. 2 00:00:07,990 --> 00:00:08,820 Hello, everyone. 3 00:00:08,920 --> 00:00:15,670 They were actually going to dig a little little bit more into detail on what his IP address and how 4 00:00:15,670 --> 00:00:18,570 we use it to connect between different ports. 5 00:00:18,760 --> 00:00:29,470 So the definition for IP address is specifically used to help users to uniquely identify a device over 6 00:00:29,470 --> 00:00:36,400 the Internet, while a port is an end point of communication in the operating system. 7 00:00:36,880 --> 00:00:43,690 For example, this is the end point, which is waiting to connect to some other way point with point 8 00:00:43,690 --> 00:00:44,140 on the Web. 9 00:00:44,320 --> 00:00:47,750 And this is the way those two devices can connect over ports. 10 00:00:47,800 --> 00:00:56,560 So when you connect over the Internet, your device is assigned a specific public IP address, while 11 00:00:56,560 --> 00:01:01,640 each website that you visit also has a specific public IP address as well. 12 00:01:01,780 --> 00:01:09,250 So both IP addresses are used for both devices to connect and exchange data until now or until at least 13 00:01:09,250 --> 00:01:17,170 recent years, who are using the IP for public addresses base, which is basically a pool with all the 14 00:01:17,170 --> 00:01:20,040 IP addresses that are possible to be created. 15 00:01:20,080 --> 00:01:28,060 But recently, also the IPV six was introduced as the IP before it reached its limit, which was about 16 00:01:29,200 --> 00:01:32,180 tens of billions IP addresses possible. 17 00:01:32,410 --> 00:01:41,710 So as you can see, the reason why the IP before goes retired is because the possible IP addresses of 18 00:01:41,710 --> 00:01:46,540 the IP before space were about four billion of the same time. 19 00:01:46,840 --> 00:01:55,000 Now, since they didn't expand it quite a lot and all those IP addresses her take on radio for that 20 00:01:55,000 --> 00:02:01,990 reason, now there is the IP six, which has this amount of other resources which they can even not 21 00:02:01,990 --> 00:02:04,810 pronounce how large this number is. 22 00:02:04,930 --> 00:02:06,450 Let's talk about the ports now. 23 00:02:06,730 --> 00:02:15,190 So the ports are basically numerical values that are used to identify a process that is being communicated 24 00:02:15,190 --> 00:02:17,220 between different IP addresses. 25 00:02:17,800 --> 00:02:23,870 So every port uses a single other port in order to send communication to it. 26 00:02:24,130 --> 00:02:33,700 So basically you need two ports and two IP addresses in order to establish communication between devices 27 00:02:33,700 --> 00:02:35,590 in the TCP IP network. 28 00:02:35,770 --> 00:02:43,060 So even if the system is running thousands and thousands of servers in order for us to uniquely identify 29 00:02:43,060 --> 00:02:49,020 a service on the system, the application simply requires a port number to which to connect to. 30 00:02:49,300 --> 00:02:57,600 So you can see actually port numbers on the Web and by default, the HTP protocol uses the port number 31 00:02:57,600 --> 00:03:06,430 of eighty while the HTP switches to secure the more secure protocol for connection issues in the Port 32 00:03:06,520 --> 00:03:08,050 443. 33 00:03:08,230 --> 00:03:16,240 So I pulled up for you some ports, some typical ports so you can have a reference for them. 34 00:03:16,420 --> 00:03:30,220 And as set, the HTP for HTP is from Port 80, HP is used for its own Port 443, while the SNH or the 35 00:03:30,220 --> 00:03:37,720 secure shell, its own port pointed to the telnet or the remote login is usually on port way to treat 36 00:03:38,170 --> 00:03:47,460 the attempted use on Ports 25, while the DHS service is usually on port fifty three. 37 00:03:47,500 --> 00:03:50,590 So these are some typical ports that you can bear in your mind. 38 00:03:50,830 --> 00:03:57,940 But if you are doing custom applications to your system, you might consider to create a specific number 39 00:03:58,210 --> 00:03:59,080 to your port. 40 00:03:59,200 --> 00:04:08,280 So it is also very important to make good difference between the public and the private IP addresses. 41 00:04:08,710 --> 00:04:19,450 Well, see, usually the private IP addresses range to 892 point thirty six eight zero zero. 42 00:04:19,480 --> 00:04:25,030 You might see this to 10 dot 255, 255, 255. 43 00:04:25,300 --> 00:04:33,250 These are quite a lot of public IP addresses, sort of private IP addresses and private means that the 44 00:04:33,250 --> 00:04:38,560 sort of IP addresses that can be stored on the local system, for example, you can run a server in 45 00:04:38,560 --> 00:04:44,140 your home and connect different devices with the different IP addresses that you assign to them on their 46 00:04:44,140 --> 00:04:44,490 website. 47 00:04:44,500 --> 00:04:50,020 You have the public IP addresses, which are basically are policies that are processed through your 48 00:04:50,020 --> 00:04:53,610 Internet service provider and you can access them over the Web. 49 00:04:53,770 --> 00:05:01,180 That said, guys, thanks very much for watching this video in this lecture, I hope the IP addresses 50 00:05:01,180 --> 00:05:03,300 and ports topic were interesting. 51 00:05:03,700 --> 00:05:09,400 Now, we were a little bit more clear about what is that, because I'm sure you've seen this topic, 52 00:05:09,400 --> 00:05:12,200 so you've heard at what is i.p in the past. 53 00:05:12,220 --> 00:05:16,210 But now we know a little bit more detail, way better than your peers. 54 00:05:16,520 --> 00:05:17,110 That's it. 55 00:05:17,130 --> 00:05:18,490 Thank you very much for watching. 56 00:05:18,490 --> 00:05:20,650 And I will be waiting for you in the next video.