I created an AWS VPC with public and private subnet. I created an RDS(MySQL) inside private subnet. I want to access the RDS from internet (From my home machine). I have kept the flag Publicly Ac...

I have ~12600 subnets: eg. 123.123.208.0/20 and an IP. I can use a SQLite Database or an array or whatever There was a similar question asked about a month ago, however I am not looking for checkin...

I am trying to clean up my AWS configuration and I want to know if particular subnets are actually used/have any resources in them. I'm aware you can filter a list of a particular resource type (e...

I've been struggling with this for hours. So, I created my VPC, along with 4 different subnets. The first three are attached to a regular Internet Gateway. The last one is attached to a NAT Gateway...

I have a python dictionary that I've created, this dictionary contains a list of subnets in the following format: x.x.x.x/24 y.y.y,y/25 z.z.z.z/26 a.a.a.a/27 etc... I would like to take the ...

Both my device and the host through which i'm trying to access are in the same subnet. Scenario: I have a switch and a server in same subnet. I have to access switch using ipv6 link local address...

I have a subnet in the format 10.132.0.0/20 and an IP address from the ASP.Net request object. Is there a .NET framework function to check to see if the IP address is within the given subnet? If ...

Since NAT gateway only have redundancy within a single AZ, if I want to have a public/private pair of subnets in every AZ for the purpose of multi-AZ redundancy, I should have a NAT gateway i...

It's simple enough to code up a class to store/validate something like 192.168.0.0/16, but I was curious if a native type for this already existed in .NET? I would imagine it would work a lot like ...

Is there a way to get a list of all assigned IPs in an AWS subnet? Furthermore, if there is a way to see the associated (AW)Services? That would be incredibly helpful as well. Thanks! EDIT: All a...

I have a table A with IP addresses (ipNumeric) stored as unsigned ints and a table B with subnets (subnetNumeric): INET_NTOA(ipNumeric) = 192.168.0.1 INET_NTOA(subnetNumeric) = 192.168.0.0 I'd l...

so I'm just learning about AWS VPC networking. From what I understand the main difference between a public subnet and private subnet is whether or not traffic in that subnet can be routed to the In...

Given: a network address A: (172.17.0.0/16) and an IP address from a host B: (172.17.0.2/16) how can we say if B is in A? All addresses are string variables in the following form: [IP address in ...

I Virtual Network has the following subnet 10.0.0.0/24 and I want to add another but each time I try I get: "Your subnet is not contained within the same address space for this virtual network" Ho...

When creating a new RDS MS SQL instance it requires a subnet group that spans multiple availability zones. I understand that this is different to Multi A-Z replication and that my instance will exi...

What are AWS VPCs (virtual private clouds)? What practical purposes do they serve? Is it mandatory to launch instances within a VPC? What are the subnets and why are they necessary? Do subnets corr...

I have a VPC in AWS account and there are 5 subnets associated with that VPC. Subnets are of 2 types - Public and private. How to identify which subnet is public and which is private ? Each subnet ...

If I have a subnet mask e.g. 255.255.255.0 and an ip address 192.168.1.5, is there an easy way to determine all the possible ip addresses within this subnet? In this case: 192.168.1.1 192.168.1.2...

I have a subnet mask as a value in an object. It comes in the long form, ie. 255.255.255.0 (for /24). I haven't come across some sort of JavaScript function for calculating this. So before I writ...

In a bash script I have an IP address like 192.168.1.15 and a netmask like 255.255.0.0. I now want to calculate the start address of this network, that means using the &-operator on both addres...

I have been handed the task of creating a function in python (3.1) that will take a CIDR notation and return the list of possible ip addresses. I have looked around python.org and found this: http:...

In AWS a VPC subnet can only reside in one availability zone. I'm curious what's the reason behind this restriction. I don't know how AWS implements VPC under the hood. But usually VPC implementati...

I am creating a basic AWS CloudFormation Template with one VPC, 3 Security Group and 5 EC2 Instances my security group looks something like this - { "WebApplicationServerSG": { "Type": "AWS::EC2...

Can't select the default VPC. Error: VPC associated with db subnet group does not exist Error image 1 -> https://i.sstatic.net/8dp4Y.png Error Image 2 -> https://i.sstatic.net/ulytq.png VPC Dash...

Heya fellow coders/developers/networkers/Devops/... I have an issue with an mDNS/DNS-SD setup in the context of WSL2 (Windows 10 2004 version) I have a pretty simple setup at home with a main ser...