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Questions tagged [cidr]

68 questions
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How to connect a VM to the Internet in VMware vCloud using a Network Gateway CIDR

I am familiar with managing servers and VMs that have their own IP address and network connection, but am now trying to host a VM in a VMware vCloud and am a newb for this. I have created the VM and configured its webserver and iptable Firewall, but…
James
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6 answers

Is there a tool for subnetting for free?

I'd like a program that I can write in an IP address and give it the Subnet mask and have it divide the networks in C level networks. Thanks. Something that I can download please, not a website.
Sergio Tapia
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1 answer

Banning an IP address

I banned an IP on my server, but I'd also like to ban using the CIDR method, e.g. IP/24. My questions are: How do I find the CIDR range of the IP address. When banning the range, if the user has a dynamic IP given to them by their ISP. They would…
Usernamehere
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1 answer

What if my public address is same as one of the IP address in my AWS VPC CIDR Block?

My public IP address (of my personal computer) from which I access the internet ranges from 112.110.x.x. For experiment, I created a VPC in AWS and chose the CIDR block as 112.110.0.0/16. In the route table, destination IP 112.110.0.0/16 has a…
Sanjay Vig
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2 answers

What's the difference between .0/32 and .1/24 in CIDR?

We're specifying CIDR addresses in AWS rules, and I came across something I don't understand. /32 means one single address. So 10.0.0.0/32 means only the single address 10.0.0.0. But an address ending in .0 is a broadcast address, right? So in…
pabo
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1 answer

SOHO Routers and Non-Standard CIDR Blocks

I recently learned about private networks. From what I understand there are three address ranges for use in private networks: 10.0.0.0/8 172.16.0.0/12 192.168.0.0/16 If this is the case, then why on earth is pretty much every SOHO router…
AlfaZulu
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Identifying subnet bits of network addresses with same CIDR

Say we have network addresses 10.10.10.252/30 and 10.10.255.252/30 and 10.255.255.252/30. They all have CIDR of 30. I realize all three subnets have two usable hosts. All three addresses have subnet mask 255.255.255.252 but different number of…
Logan Lee
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AWS Reserved IP addresses

I have multiple VPC in my account and I created most of VPC using subnet 10.0.0.0/8 or 192.168.0.0/16 or 172.16.0.0/12 subnet blocks. I am exhausted with my range due to not optimizing the IP address properly and adding a wrong route of 10.0.0.0/8…
Pratap
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