1 00:00:00,840 --> 00:00:06,000 In our next section we're going to talk about not network address translation. 2 00:00:06,210 --> 00:00:13,380 And let's go ahead with that over the network address translation is the method of remapping one IP 3 00:00:13,380 --> 00:00:21,750 address space into another by modifying network address information in IP datagram packet headers while 4 00:00:21,750 --> 00:00:26,340 they are in transit Ecorse air traffic routing device. 5 00:00:26,520 --> 00:00:32,220 The main use of Natha is limit the number of public IP address. 6 00:00:32,220 --> 00:00:41,490 As an organization our company must use for both more both for both economy and security purposes. 7 00:00:41,490 --> 00:00:48,930 So why we need now because IPV for Edry space is limited. 8 00:00:49,080 --> 00:00:59,530 So each device can not use a global address and private IPV for Edwards range is not surrounded by Internet 9 00:00:59,530 --> 00:01:00,300 druthers. 10 00:01:00,420 --> 00:01:05,650 So they need to be translated to global addresses. 11 00:01:06,360 --> 00:01:16,230 Let's go with the private IP address range a private IP address is an IP address that is reserved for 12 00:01:16,320 --> 00:01:22,290 internal use behind a rather or other not device. 13 00:01:22,330 --> 00:01:31,520 Apart from the public private IP addresses are in contrast to public IP addresses which are public and 14 00:01:31,520 --> 00:01:36,710 can not be used within the home or business network. 15 00:01:36,900 --> 00:01:43,920 Sometimes a private IP address is also referred to a local IP address. 16 00:01:43,950 --> 00:01:57,370 OK we Hello class A B C IP addresses as you can see and their strengths are the private IP address range 17 00:01:57,430 --> 00:02:03,820 that we can use in our local area work. 18 00:02:03,830 --> 00:02:14,270 Let's go with the net terminology in not terminology or some terms such as use side global For example 19 00:02:14,510 --> 00:02:24,380 I'm sorry inside local which means your host type if for example if you are on PC Wan your inside local 20 00:02:24,380 --> 00:02:29,360 IP is the IP address of the PC Wan. 21 00:02:29,360 --> 00:02:39,660 Let's go to insert global Isold global address means your public IP address in this statement. 22 00:02:39,680 --> 00:02:49,370 In this example our IP address inside IP addresses are converted to this public IP address. 23 00:02:49,550 --> 00:03:01,400 So which means our inside global IP address is this and we're outside localized Piya this term which 24 00:03:01,400 --> 00:03:15,920 means remerge host IP in the year the remote host is this and are outside localized P is this IP address 25 00:03:16,670 --> 00:03:28,010 and outside globalise address is the removed public IP address which is this IP address for this example. 26 00:03:30,820 --> 00:03:31,510 Let's go ahead. 27 00:03:31,510 --> 00:03:32,920 The did not type. 28 00:03:32,920 --> 00:03:43,930 So we have three types of the network colorist translation and they are static dynamic and the P-8 the 29 00:03:44,020 --> 00:03:54,640 which is port address translation is static Nat metered private addresses are matched with global addresses 30 00:03:55,150 --> 00:03:56,670 one to one. 31 00:03:56,680 --> 00:04:10,480 For example if PC Wan will go to the Internet that's going to use these IP address. 32 00:04:10,610 --> 00:04:14,260 PC too will serve on the Internet. 33 00:04:14,500 --> 00:04:26,090 That's going to use this IP address and PC three will use this IP address in dynamic not permitted a 34 00:04:26,270 --> 00:04:37,340 public IPV 4 pool is configured on our rather and IP addresses are assigned with first come first served. 35 00:04:37,600 --> 00:04:49,150 For example if this guy wants to surf on the Internet he'll get this type address from this pool. 36 00:04:49,180 --> 00:04:55,070 Secondly PCF 3 wants to surf on the Internet. 37 00:04:55,110 --> 00:05:01,180 This guy will get this IP address and if PC too wants to surf too. 38 00:05:01,590 --> 00:05:11,060 That's going to take this IP address that's going with the port address translation impact method each 39 00:05:11,090 --> 00:05:21,410 IP each problem to address is translated to a single or a field a public IP address and port addresses 40 00:05:21,410 --> 00:05:25,940 are used for choosing the right internal device. 41 00:05:26,060 --> 00:05:35,090 When the packet is coming back in this method we have PC 1 2 and 3 as you know and all of these guys 42 00:05:35,090 --> 00:05:44,990 have the private IP address of this this and this for HPC. 43 00:05:45,020 --> 00:05:52,450 And we just have one public IP address and our private IP addresses. 44 00:05:52,550 --> 00:06:00,680 All of them are being compared to a single IP address in part method. 45 00:06:02,110 --> 00:06:02,720 Let's go ahead. 46 00:06:02,720 --> 00:06:07,810 We do not call figuration to configure a static Nat. 47 00:06:07,900 --> 00:06:18,640 We are tapping IP not inside source technique and we are typing our private and public IP addresses 48 00:06:18,640 --> 00:06:20,480 that we want to convert. 49 00:06:20,920 --> 00:06:31,530 Then we are getting into the interface mode of our rather and 4 gig 00 which looks to the internal side. 50 00:06:31,720 --> 00:06:43,460 We are typing I Pinette inside command and we're typing I up outside comment for our geek 0 1 interface 51 00:06:43,610 --> 00:06:48,010 which loops to the Internet side to her files. 52 00:06:48,020 --> 00:06:53,290 They think not configuration we can show IP not translations commands. 53 00:06:53,300 --> 00:07:00,090 And we can't check the inside local and the global IP addresses. 54 00:07:00,320 --> 00:07:03,520 Let's go with the dynamic not configuration. 55 00:07:03,650 --> 00:07:14,780 So we need to firstly define an IP address pool in here to define a pool and tapping IP in that pool. 56 00:07:14,780 --> 00:07:27,020 The pools name which is network cable and I'm defining the range of the pool with the net mask keyword 57 00:07:27,050 --> 00:07:36,980 and I'm typing the subnet mask that I'm going to use for the pool then I am creating an access list 58 00:07:37,490 --> 00:07:49,250 and I'm permitting my internal network which begins with 10:41 one in here and I'm using with the proper 59 00:07:49,300 --> 00:07:51,490 wildcard mask. 60 00:07:52,070 --> 00:08:05,050 Then in the third step and typing I Pinet inside source sourceless the access list number with a pool 61 00:08:05,050 --> 00:08:16,810 of our pools name them in the last step I'm getting into the interface's gig 00 and gigs are what and 62 00:08:16,990 --> 00:08:23,440 I'm typing the IP not inside an IP not outside statements. 63 00:08:23,800 --> 00:08:31,540 Here's the configuration of the Pat four parts configuration we are using the same similar logic with 64 00:08:31,540 --> 00:08:42,340 the dynamic that we are creating poor again with I Pinette to pool name network cowpat and we're defining 65 00:08:42,340 --> 00:08:51,550 the IP address range which are the same ones because I'm just going to use one IP address with this 66 00:08:51,940 --> 00:08:52,920 mask. 67 00:08:53,290 --> 00:09:04,420 Then I'm creating an IP X access list again which is defining my local area network OK. 68 00:09:04,810 --> 00:09:10,370 The IP address is that I'm using are just starting with 10:41 one. 69 00:09:10,720 --> 00:09:20,500 And this access list hits these first three bids and is the Stedman's threads starting with the 10:41 70 00:09:20,500 --> 00:09:21,260 barn. 71 00:09:21,480 --> 00:09:30,770 Right then I'm typing IP night inside sourceless a serial number pool. 72 00:09:30,930 --> 00:09:32,580 My pool name 73 00:09:35,550 --> 00:09:40,130 and I'm using an overload keyword. 74 00:09:40,510 --> 00:09:40,820 OK. 75 00:09:40,860 --> 00:09:42,630 That's the key difference. 76 00:09:44,440 --> 00:09:51,570 Then I'm getting into the interface mode and I'm typing IPN that inside and outside statements again. 77 00:09:53,370 --> 00:09:57,170 So let's take a look to the not for IP version 6. 78 00:09:57,170 --> 00:10:08,310 Lastly I delusional 6 has a huge address space so there is no need for not for private public translation 79 00:10:08,800 --> 00:10:11,900 not that is only used for communication. 80 00:10:11,910 --> 00:10:20,820 But when I speak before and I through version 6 devices and this method is known as net sixty for.