Questions tagged [subnet]

A subnetwork, or subnet, is a logically visible subdivision of an IP network.

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Excel Formula to figure out number of bits in subnet mask

I would sincerely appreciate if you could help me.. I am so confused right now. I have tried to solve this for over 2 hours now, google isn't helping me Heres what my teacher gave me to complete on ...
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How many subnets and hosts per subnet can you get from the network 172.31.0.0/19? [closed]

How many subnets and hosts per subnet can you get from the network 172.31.0.0/19?
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Additional Subnet IPs for Hyper-v VM- VSwitches

i recently bought a dedi server from hetzner to use with hyper-v VMs, for the first 6 additional IPs hyper-v worked fine with default(auto) Virtual switch, i just created VMs, attached unique mac ...
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Home network 2 subnets

Network noob here. This is my current home network situation: So I have two ISPs, one VDSL the other over TV cable. Each one has a router with WiFi and an ethernet switch attached to it. Several ...
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What mask for a LAN with two routers / subnets?

I have a main-router connected to ISP and most devices connected to it. It has IP 192.168.0.1 and it's connected clients get IPs in range of 192.168.0.X A second-router connected to this one, will ...
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Device discovery across subnets

I segmented my home network into 2 separate subnets LAN/IoT so that IoT devices cannot attack my PCs and smartphones if compromised. Personal devices get assigned IPs in the range 10.1.1.1 - 10.1.1....
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Is it possible to reach a computer on a network with a static ip that doesn't belong to the subnet?

Let's say I have a router at 192.168.0.1. Let's say it's a /16, so it's routing for 192.168.x.x. I have a desktop on this network at 192.168.0.2. Let's say someone attaches a new system to the network ...
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Is this a valid assignment (made by professor) about dividing hosts into two subnets?

I quote the assignment: "Consider an organization with 4000 hosts. Divide the hosts into two subnets containing 1000 and 3000 hosts. Choose network ID's and define the subnet masks so that the ...
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Establishing Connection to Ethernet Switch

I am trying to configure a basic network for a LAN. The LAN consist of only devices and an Ethernet switch. The devices are using Ubuntu. To configure a basic network, the computers must be on the ...
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Assigning subnet IPs to OpenVPN clients in AWS

I have a working OpenVPN server installed on the EC2 instance inside my VPC. It's used to allow remote users to access services inside private subnet. It's been a sufficient solution so far but ...
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OpenVPN - can't connect to clients on a new subnet

I run a server with lots of clients connected to it via OpenVPN and the number of clients slowly grew until it reached over 255 a few days ago. When I was initially setting up the VPN, I had this in ...
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VirtualBox Guest OS gets IP address in different subnet range [duplicate]

I installed a Debian-based Linux distro on a virtual machine with VirtualBox on an iMac. The private IP of the iMac is in the subnet range of 192.168, where as the Guest OS' IP is in the subnet range ...
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Device category between router and firewall (subnetting but nothing more)

In our office building we are eight small independent offices. In the future we would like to share one internet connection. In order to make sure that we do not access the network of each others we ...
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How exactly is a subnet mask used when determining where to send a packet to?

If you have the subnet mask 255.255.255.0 and a class A IP address, the first octet specifies the network, the last is the individual host. So do the middle 2 octets specify the subnet? And this is ...
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How to setup a virtual subnet?

Ubuntu 20.04 is installed on my machine. A network cable connect it to a network camera. I've installed three virtual machines via VirtualBox on it, one Windows XP and two Ubuntu 12.04. What I need is ...
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Routing 2 subnets

I have the following network topology as on the bellow picture. Briefly: Router A is connected to the internet and has local IP of 192.168.1.1. It is also a DHCP and serves clients on LAN or WiFi. ...
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Connect two subnets via ISP switch

I have a wireless router connected to my ISP switch in my home and then a workstation connected to another port on the same switch. Can I somehow connect the two subnets or is that only in the hands ...
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Multi Wi-Fi Router Network Assigning IP Addresses Outside Subnet

As illustrated here, I have a home network with two 5G wifi routers. ROUTER A (the ARRIS Surfboard) is also the modem that has DHCP enabled and is the default gateway. ROUTER B (A NETGEAR R6700) has ...
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Separate networks in rooms connected to one router

I have a problem to solve with network at my home. I have a central router with address 192.168.1.1 it assigns automatically addresses 192.168.1.* ( I cannot change that) In my room I would like to ...
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Same subnet but invisible to eachother

I am trying to run an octopi server on the raspberry and connect to it with the laptop. I managed to get two devices (a raspberry pi 4 and a laptop) to be on the same subnet of a public wifi network ...
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Can someone tell me if there's anything wrong with this network configuration? + Multiple Public IP

Firstly, is there anything wrong with this configuration? Secondly, will subnetting the network help with performance? Also, my ISP provided 2 public IPs through a single cable line. Will it be of any ...
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Immediate implications of moving from 255.255.0.0 to 255.255.255.0 subnet mask?

We currently have a network setup like this: 10.1.0.0 with a subnet mask of 255.255.0.0. Nonetheless, the third octet was sorta/kinda used to identify the group of devices. Example: 10.1.1.0 - 10.1.1....
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which ip address to assign to “private” interfaces?

I have an equipment powered by a cortexA CPU on which I run linux: It has 5 network interfaces. One is actually an ethernet interface (eth0). The others are tun interfaces with which it communicates ...
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Is it advisable to use multiple addressing schemes on the same lan?

Is it advisable to use multiple private addressing schemes on the same lan to be able to tell them apart easily in tcpdump or similar? e.g., fw 10. dmz 172.16. wifi 192.168. Will this cause ...
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nwdiag of home lan, is it whack?

Are there problems I can avoid by subnetting differently? I'm setting up a modest home lan, and I want to know if I missed anything critical or if there's a simpler way to subnet with given ...
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subnet mask ip address

I have a device having IP address 192.168.1.** and subnet 255.255.255.0 I access that device on my pc through web servers by entering IP address of that device on the browser. By mistake I changed its ...
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IPv4 Subnetting - Finding IDs for specific subnets

I need to know how to calculate/find the network ID for a specific subnet. For example, if we need 1000 subnets and 35 usable hosts, how do I find the subnet ID for the 250th subnet? Also, how do I ...
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Computers cannot ping each other with attempt to create a large subnet

Total newbie question here. I have a regular Netgear router (COTS) that I am trying to configure to increase the number of LAN IP addresses. Typically, the LAN is setup as follows. IP Address: 192....
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Communicating and chrome-casting between different subnets

I have my networks set up as all wired connections (PCs, TVs, Chromecasts etc) are connected to our main router (just the standard one that our ISP gave us) with gateway 192.168.0.1 and subnet mask ...
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How to configure internet for one 'super' router and four routers underneat

In our home we have one Ziggo (dutch cable internet provider) router and we are stuck with one unfortunately. However, as we have 4 households (appartements) that all should connect to this router, we ...
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Why subnet prefix is required when setting up a static address with nmcli in Linux?

It's conceptual question. I understand why subnet masking is required to achieve correct addressing of packets on the net. However, I do not understand why NetworkManager needs to know the schema (/24)...
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find CIDR and check if subent is valid

It's been a long time since i answered networking questions and i kind of forgot how to answer them. can someone explain me how to find the correct CIDR? Second question: I'm pretty sure the first and ...
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How can i configure my router wifi to be on the same network

Hello everyone at my job my boss ask me to configure four router to extend our networking for people (I work in center with a lot of people and activity) I manage to put every router working and ...
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How to block “inner” LAN interaction with “outer” LAN in a two-Router configuration?

there is a sub here How to create a separate subnet for wireless access?, which shows a solution for two isolated private networks but for that you need 3 routers. I would like to know if there is a ...
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Separated network for layer 2 and 3 with additional wifi routers possible?

I need help in setting up a second isolated network for IoT stuff (TV, Fridge...). I tried it with two wifi routers, but when I tested it, it was not isolated yet. For the test I had the main router ...
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Subnet Device commication using consumer grade routers

My ISP requires the use of their router that i am not able to view or configure. As such, i am using my own router (Asus AC5300) as an unfortunate second NAT. I now need to add a second router and ...
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Can a second router connect via WAN to another Router and establish a second network? [duplicate]

Setup is: A main router, then a second router which connects from its WAN port to a LAN port of the main router. This second router's goal is to establish a separated network for guest devices. I ...
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how does arp scanning cross the network layer?

I have the following setup in my network: cc:cc:cc:cc:cc:cc -------- 192.168.1.5/24 phone bb:bb:bb:bb:bb:bb (other networks and ...
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How to implement subnet for existing home network

This is really a nooby question about subnetting. I understand the basic concept behind subnets but I really don't know exactly how to implement it. For me, I would like to have 4 subnets and from ...
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/16 Subnet on home network not working

I am new to subnets and apologize for the lack of knowledge. I have moved home networking IP addresses to the 10.0.x.x range for a few different reasons. On my routers settings, I changed the DHCP ...
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Are X.X.X.255/30 and X.X.X.253/30 in the same range?

According to wiki: "The first address in a subnet is used to identify the subnet itself. The last address is used as a local broadcast address for all devices on the subnet." How would this work in ...
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How do I change the source IP of NAT-locally forwarded packets to the public IP of the forwarding router?

I have a typical consumer router(netgear) running DD-WRT. It has port forwarding set up to a server in the private network. I can send UDP-packets to that server, by using the public ip/DDNS address ...
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gateway using different subnet than router

I'm installing a new router on a home network and the new router's routing table is as follows: The gateway shown here is the modem which used to also be used as a router. Now is this a problem that ...
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mDNS on a large domain

I'm working remotely on a corporate VPN and I can connect to our intranet webpage using the server IP address. I read it may be possible to instead resolve using http://servername.local/ourwebsite ...
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Configure static IP-adress to connect to device in subnet

I have a Dragino-Yun v2.4-shield, which is a device that can be connected with an Arduino to give it networking-capabilities. It has An Ethernet-Port and Wifi. I don't have a wifi-antenna at the ...
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What does it mean by the smaller the subnet mask size, the more IP addresses are available?

I do not really understand the part where it states that the smaller the subnet mask size, the more IP addresses are available? I thought the bigger the number after the slash, the more addresses are ...
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Subnet mask and Default Gateway

Since subnet masks defines the network, so does it defines default gateway's IP address? Ex. if a class A subnet 255.0.0.0 is define, you set your default gateway to also be like 10.0.0.0 to 254?
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Are these 2 private LAN IP addresses on the same subnet or are in different subnets? [closed]

I am not so into networking and I have the following doubt related to some machines into the network of a customer. So I have the following situation. MACHINE 1: 10.173.17.92 MACHINE 2: 10.173.21.80 ...
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Access bridged subnet

I would like to use ISP2 instead of ISP1 internet from PC1 computer. But I'm not even able to ping antenna A, however, antenna B shows that it is connected to antenna A. I would also like to access ...
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Windows Specific Route not followed to 192.168.0.0/24 subnet

My IP address is 10.0.1.15 and I am trying to route to access an IP address on 192.168.0.0/24 through a deafault gateway of 10.0.2.133. Can someone please explain why tracert to 192.168.0.134 is still ...

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