1 00:00:00,200 --> 00:00:03,280 ‫So this was a heavy section and without any hands-on, 2 00:00:03,280 --> 00:00:04,990 ‫so that may have been confusing, 3 00:00:04,990 --> 00:00:07,160 ‫but really I don't want to bug you down with hands-on 4 00:00:07,160 --> 00:00:09,530 ‫because this is not for a Certified Developer. 5 00:00:09,530 --> 00:00:11,110 ‫You just need to remember a few concepts 6 00:00:11,110 --> 00:00:12,690 ‫out of this whole section, 7 00:00:12,690 --> 00:00:15,370 ‫so I'm going to summarize everything in one slide. 8 00:00:15,370 --> 00:00:17,180 ‫And trust me, you will be all set 9 00:00:17,180 --> 00:00:20,090 ‫on all the VPC questions going into the exam, okay? 10 00:00:20,090 --> 00:00:21,660 ‫So don't stress it out. 11 00:00:21,660 --> 00:00:24,520 ‫The first one is VPC which stands for Virtual Private Cloud. 12 00:00:24,520 --> 00:00:26,780 ‫And we've been using the default VPC 13 00:00:26,780 --> 00:00:30,130 ‫all along this course when we created our EC2 instances. 14 00:00:30,130 --> 00:00:32,380 ‫There's going to be one default VPC 15 00:00:32,380 --> 00:00:34,990 ‫for AWS region we are using. 16 00:00:34,990 --> 00:00:39,030 ‫Subnets are tied to a specific Availability Zones. 17 00:00:39,030 --> 00:00:41,690 ‫And this is where we've been launching our EC2 instances. 18 00:00:41,690 --> 00:00:45,910 ‫And they represent a network partition of your VPC. 19 00:00:45,910 --> 00:00:49,589 ‫The Internet Gateway is what gives access to 20 00:00:49,589 --> 00:00:53,050 ‫our instances in our public subnets to the internet, okay? 21 00:00:53,050 --> 00:00:55,190 ‫And they are defined at the VPC level. 22 00:00:55,190 --> 00:00:57,670 ‫NAT Gateways and NAT Instances will give 23 00:00:57,670 --> 00:01:00,557 ‫internet access this time to our private subnets 24 00:01:00,557 --> 00:01:02,800 ‫through our EC2 instances and private subnets. 25 00:01:02,800 --> 00:01:06,360 ‫NACLs or Network ACLs are stateless subnet rules firewalls 26 00:01:06,360 --> 00:01:08,740 ‫for inbound and outbound whereas Security Groups, 27 00:01:08,740 --> 00:01:10,945 ‫we've seen them before are stateful, 28 00:01:10,945 --> 00:01:12,330 ‫they operate at the EC2 instance level 29 00:01:12,330 --> 00:01:16,210 ‫or the ENI and they can reference other security groups. 30 00:01:16,210 --> 00:01:20,730 ‫For VPC Peering, this allows us to connect two VPC together 31 00:01:20,730 --> 00:01:22,700 ‫as long as they are not overlapping 32 00:01:22,700 --> 00:01:24,759 ‫and this is not a transitive VPC Peering 33 00:01:24,759 --> 00:01:27,350 ‫therefore you need to establish VPC Peering connection 34 00:01:27,350 --> 00:01:29,590 ‫between all your VPC if you want to have them 35 00:01:29,590 --> 00:01:31,460 ‫connected with each other. 36 00:01:31,460 --> 00:01:35,310 ‫VPC Endpoints is going to provide you private access 37 00:01:35,310 --> 00:01:37,450 ‫to AWS services within your VPC, 38 00:01:37,450 --> 00:01:39,520 ‫and that is something that we will see 39 00:01:39,520 --> 00:01:42,650 ‫in the future lectures for some services. 40 00:01:42,650 --> 00:01:45,680 ‫And VPC Flow Logs will give you your network traffic logs 41 00:01:45,680 --> 00:01:49,460 ‫to ensure that you can debug if something is access denied, 42 00:01:49,460 --> 00:01:53,020 ‫or if traffic is locked or allowed within your VPC. 43 00:01:53,020 --> 00:01:54,240 ‫Finally, let's establish connection 44 00:01:54,240 --> 00:01:56,920 ‫from your on-premises data center to AWS, 45 00:01:56,920 --> 00:01:59,380 ‫you have the Site to Site VPN which is to 46 00:01:59,380 --> 00:02:02,240 ‫have a VPN connection over the public internet 47 00:02:02,240 --> 00:02:03,970 ‫and your Direct Connect if 48 00:02:03,970 --> 00:02:06,897 ‫you want a direct private connection to AWS. 49 00:02:07,770 --> 00:02:10,330 ‫So, don't stress if you didn't understand everything 50 00:02:10,330 --> 00:02:12,240 ‫in that section, you can come back to it later. 51 00:02:12,240 --> 00:02:14,220 ‫As I said in the course, I will be highlighting 52 00:02:14,220 --> 00:02:16,610 ‫all the specific VPC features we need. 53 00:02:16,610 --> 00:02:19,010 ‫And then come back to it if you want at the end 54 00:02:19,010 --> 00:02:20,000 ‫but don't stress it out. 55 00:02:20,000 --> 00:02:21,470 ‫I'm really, really serious about it. 56 00:02:21,470 --> 00:02:23,350 ‫I just want to give you a bit more information 57 00:02:23,350 --> 00:02:24,650 ‫than what you needed just to make sure 58 00:02:24,650 --> 00:02:27,410 ‫we are on the same page, and let's go, 59 00:02:27,410 --> 00:02:28,500 ‫let's move on with this course. 60 00:02:28,500 --> 00:02:31,400 ‫Trust me it's gonna get a lot more developed very very soon. 61 00:02:31,400 --> 00:02:32,233 ‫All right, that's it. 62 00:02:32,233 --> 00:02:33,970 ‫I will see you in the next lecture.