Questions tagged [subnet]
A subnetwork, or subnet, is a logically visible subdivision of an IP network. The practice of dividing a single network into two or more networks is called subnetting and the networks created are called subnetworks or subnets.
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IPv6 - Are the last 16 bits of the network ID always reserved for subnetting?
I was reading about IPv6 address structure and it has two portions one for the network (Network portion/Network ID) and another for host (Interface ID/Node Part) something like IPv4 has regardless of ...
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Connecting two Comcast networks together in the same building
Just looking for some heads up on this idea I have... I have two office locations for the same company in the same building. Each has a separate Comcast Business account / service.
I want to connect ...
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Why AnyIP feature does'nt seem to be working on my ubuntu machine?
I have an ubuntu VPS with a /64 ipv6 subnet assigned to it from the provider. When I connect to the fresh server the networking daemon configuration is:
/etc/network/interfaces:
# Generated by SolusVM
...
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nordvpn whitelisting 2 subnet LAN hierarchy
I have a network setup like this:
Ubuntu Laptop (192.168.1.157) --> Router B (192.168.1.1) --> Router A (192.168.0.1) --> Internet
and
CIFS NAS drive (192.168.0.50) --> Router A (192.168.0....
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Hiding subnet from router
Lets say I have a network layout similar to this:
What do I need in the ? node so that all of the PC's are not discoverable form the main network, but can access the main network/internet? I don't ...
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Consolidate Azure vnet subnet to use a single outgoing private IP
I am not very strong with networking but I will try to explain.
I have a vnet in Azure and inside it a subnet 10.1.0.0/24.
Is it possible to setup routing so that every IP from 10.1.0.0/24 would ...
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AWS: Ping between multiple namespaces in seperated EC2 Instance
I am encountering an issue where I am unable to receive a response when attempting to ping from a namespace located within a public EC2 instance to a private one. To better illustrate my situation, I ...
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AWS VPC Subnetting
I have a VPC created with a CIDR block of 10.10.0.0/16. I am trying to subnet that block into some /24's -- ie. 10.10.1.0/24
It wont let me. The error I get is:
CIDR Address overlaps with existing ...
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How to configure DHCP and Subnet on VODAFONE SMART ROUTER 3?
I intend to have for my internal network the submask /27
The IP of my Vodafone Smart Router 3 is 192.168.1.1 and the factory default submask is /24
This will give me 8 subnets
192.168.1.0 192.168....
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Allow connection to internet but block local connections
PC A resides on a network with an ISP provided main router & additionally 2 WiFi Access Points, serving several devices beside PC A.
I'm looking to set-up an internet accessible SSH service on a ...
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What does the subnet mask of the tunnel ip in Wireguard do?
Wireguard works even without setting a tunnel IP address, i.e. it's enough to set the AllowedIPs, endpoint addresses, private and public keys.
In the docs of OpnSense, there is the following warning:
...
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How is NAT Port Exhaustion handled?
"Port address translation (PAT) resolves conflicts that arise when multiple hosts happen to use the same source port number to establish different external connections at the same time. PAT may ...
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computer get dhcp from windows server dhcp server that is in other subnet
i have server with windows server 2019 with dhcp server role installed
i'v created this scope: 192.168.9.1 - 192.168.9.10 with subnet 255.255.0.0
also i'v created a virtual lan card with this ip: 192....
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List all active devices in different subnets?
My company has a class A network that contains various subnets. I need to automate a way to produce a list of all online devices (in all the subnets). To start, just a list of responsive private IPs ...
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Internet access problems on subnet
Hello Server Fault friends!
I have a question that I believe should be easy to answer for someone who really gets how a typical subnet should be configured with a router such as PFSense.
My Problem: I ...
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How to configure a /27 subnet on vlan Centos 7
I have a dedicated server running Centos 7.
I purchased a /27 subnet from my hosting provider. They said:
"Your /27 subnet should be acceptable over vlan-interface with tag 18."
I asked them ...
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How to forward traffic from one LAN router through another router then to the original gateway?
I have two routers connected to my ISP within one town in the subnet 192.168.0.0/24.Router A can reach router B successfully. I have higher bandwidth on router A than B. I would like to make A the ...
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Can not get Virtualizor IP pool working with /27 subnet
I've been scratching my head a few days at this now and I am by no means a networking expert but I know (most) of the basics.
I've got Virtualizor setup on CentOS 7 and I'm trying to add a new /27 (...
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Accessing Devices on SubnetA from SubnetB
Hi All been beating my head all day and will continue to do so but hoping someone can guide me in a direction.
I am currently trying to plug an IP Cam directly into ubuntu machine that has an eth0 ...
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Can't SSH to ec2 instance on shared subnet
I have a single VPC with one internet gateway and some subnets that are shared across multiple AWS Organization accounts using RAM. The VPC is protected with a Security Group that is managed by ...
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Is This the Correct Way to Setup AWS Private Subnet -> NAT -> Internet
We want our internal private EC2 instances to have access to the internet so they can download software and install security patches. Of course, out of the box, your private subnet servers will not ...
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Allow communication between two networks through two routers
I have the following setup
I would like Device A to be able to communicate with device B and vice versa. I have setup static routing on Router A, and Router B as follows:
Router A: 192.168.1.0/24 ...
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Does DDNS work within an ISP subnet?
I'm trying to host a web server through a Raspberry PI 4, but found some problems in the final steps of my configuration. What I did is the following:
Install Nginx.
Install Node to host my site (I'm ...
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2
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Can this two IP see each other?
I can't remember how networking worked. I need someone to help me with this, it may sound a bit stupid but I have to take care.
This are the two IPs:
107.1.233.7/24
10.202.104.148/25
Simple question....
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Configure new routing and run DHCP server in router to access internet
SO I am a beginner network professional , I was sent to do a routing in client location so they can access the internet .The routing was supposed to be done on cisco 3900 series router. the following ...
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Creating Subnet IP address : IPv4 block sizes must be between a /16 netmask and /28 netmask
I'm new to AWS and I'm looking to create a subnet. Whenever I try the defaults subnets under I get either the error message "IPv4 block sizes must be between a /16 netmask and /28 netmask." ...
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Unable to ping between two devices in two subnets connected via router
I have two systems running on Windows, the first one S1 in subnet 192.168.3.0 and the second one S2 in subnet 192.168.2.0. Both are connected to my Linux box, say R1, which I want to act as router for ...
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WireGuard full tunnel blocks Internet access
Thanks for even clicking on my question !
So, I have an R-Pi, and I installed WireGuard on it (I am NOT using PiVPN; I tried, but it wasn't working at all). I also have PiHole installed.
I have been ...
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Connect to device in wan network from nested subnetwork with two AVM Fritz!Box routers
I have the following network setup:
Internet
^
|
WAN |
+---------+----------+
...
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Can I acess a web server located in another subnet? [closed]
I have a Laptop and a PC. My first laptop shares the same LAN as the PC, let's say they have 192.168.1.10(Laptop) and 192.168.1.20(PC) so I can SSH into it, ping it, etc… and vice-versa.
Now, I have ...
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TCP communication on port not responding on different Availability Zone or Subnet
I'm a little curious and confused about this situation. We setup a monitoring instance scraping an exposed endpoint on 2 different instances. Both on same VPC, same security group, same route table ...
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What is the difference between 0.0.0.0/0 and 0.0.0.0/1?
In the history, I mostly used 0.0.0.0/0 for "match every IP address". Recently, I saw a 0.0.0.0/1 subnet filter.
What is the difference between 0.0.0.0/0 and 0.0.0.0/1 and what's the ...
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Why would you use 192.168.0.0/16 over 10.0.0.0/8 [closed]
Most home networks use 192.168.x.0/24. I wonder why this range even exists. You could as well use 10.x.x.0/24 or something like that. So why did they waste the entire 192.168 range for private ...
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Can I have 2 public subnets one one EC2 instance for creating a load balancer?
So I eventually want to set up a classic load balancer on AWS and I have a VPC with 2 public subnets, but now I am not sure if I can use those two subnets for that one EC2 instance or do I need two ...
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How to set up 20 IP's from 2 different Subnets / 2 Gateways on 1 Interface? - Debian 10
I'm trying to figure out a way to get my networking.service to work properly, so networking service restarts work.
How do I setup those 20 IP'S with 2 different Gateways but only 1 NIC? With 2 NIC's I ...
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Why are two IP addresses within the same subnet unable to ping each other?
I was setting up ip addresses between two devices and I noticed something odd. I feel like I am missing an important fundamental here:
Context:
Device A: 10.30.0.1/12
Device B: 10.2.0.2/12
if I set up ...
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How To Add Docker Container Static Route?
Have a server with 4 subnets - 1 usable IP each and each configured on separate network port on the network card. Running 4 docker containers, but they are randomly accessible upon reboot. How to add ...
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No Access to Cisco ESA from different VLAN
I am in the process to migrate to separate Vlans from a single 10.1.0.0/16 subnet on VLAN1
In the existing /16 subnet is our Cisco Mail Security (ESA).
In a new Vlan Segment for clients (10.101.10.0/...
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How to calculate a working "AllowedIPs" for Wireguard on Android?
I am using Android to connect to my WireGuard server through the public IP address of the host network. The LAN is using addresses 192.168.0.1-255. I would like the client to connect through the VPN ...
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Can't ping into subnet
I am currently setting up a network and I'm having some pinging issues between computers, how could I fix this ?
Computer A, which is in the main network can ping his own router, and the subnet router,...
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How can I setup NAT with multiple public IPs (/29 subnet) on pfSense?
Our ISP provides a /29 subnet which includes the following IPs:
Network Address: 199.1.1.0
Router/Gateway Address: 199.1.1.1
Usable IP addresses: 199.1.1.2 - 199.1.1.6
I would like each of the 5 ...
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Subnet is not creating with terraform on azure, how to fix it?
I am trying to create two centos 8 machines with terraform on azure.
My templates github link
When I try to apply, I am getting below error related to policy.
Could you please suggest how to fix this?
...
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Access VPN subnet from another PC in local(another) subnet [closed]
I have two PC in local subnet (192.168.0.0). One of them have connected through VPN to another subnet(10.0.0.0).
[192.168.0.0]
| - - PC1
| - - PC2 - - vpn - - [10.0.0.0]
Router -- [Internet]
Is there ...
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IPv6 vs IPv4 available subnets - enough or too less
I read a bit about IPv6 and found that usually you get assigned a /48 prefix address. Which gives you 16 bit for subnetting.
Reading further assuming that you use /64 subnets you would end up with ...
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Error response from daemon: Pool overlaps with other one on this address space (when on VPN)
In Ubuntu I am trying to create a docker network with a specified subnet when on VPN but I get the below error:
$ docker network create my-network --subnet 172.17.24.0/18
Error response from daemon: ...
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Selecting subnets for a Service in Fargate
As we can see in the picture above, I can select as many subnets as I want. Does it mean, the tasks in the service are created across these two subnets?
Suppose I have one task running, in which ...
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How to link two networks with different IP ranges
I've got a network on ip range 192.168.0.X. It has a router with an internal IP on this range that lets it talk to the outside world.
If I create a new network on ip range 192.168.1.X. How can I get ...
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networking default gateway, default route
in ipv4 cidr notation you can have an ip address like 10.10.20.0/24
it's expanded to
network : 10.10.20.0
first ip : 10.10.20.1
last ip : 10.10.20.254
broadcast: 10.10.20.255
netmask : 255.255.255....
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Virtually move Host to foreign Network
is there a way to move a host virtually to a different network based on its mac-address?
Example: Imagine a firewall with a LAN (let's say 192.168.1.0/24) and a DMZ (e.g. 172.1.1.0/24) interface.
...
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Can't ping PetaLinux machine if both NICs on same subnet and unplug eth0
I have a PetaLinux machine (Embedded Linux on a Xilinx Zynq device, debian fork, kernel 4.19). If the two NICs are on different subnets, then I can disconnect one NIC, and the other will continue ...
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