Questions tagged [subnet]

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

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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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1answer
408 views

Why am I having connection difficulties across two subnets?

I'm attempting to wirelessly connect my neighbor's home network with mine. We each have our own internet services and subnets which we want to preserve, but still be able to access services between ...
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Change the gateway in a docker network

I'm trying to create multiple dockers (from the same image) and put them in a subnet where I can work with them as if they were many machines. version: "3" services: machine001: ...
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Home Network Setup and Advice

I am wanting some ideas and advice for how to do my home network. I am an IT Technician and know the basics, however networking is not my strong suite and I want to improve. [Current setup] There ...
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separating two networks with DMZ?

I am a college student wanting to get into server and networking but I have an issue I need help with at home. I asked a question about a year ago about creating two separate networks with the same ...
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Setup IPv6 on two routers with file sharing

My current network is as seen below (plenty of more wifi devices but you get the idea). +--------+ ...
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1answer
358 views

Using private IP form a subnet to another subnet

Suppose I stay in the blue building and there is also a red building and other buildings too (picture below). In each building, there are about 50-60 families. An ISP provides internet connection in ...
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2k views

Why can't I change the subnet IP address in the Virtual Network Editor in VMware Workstation?

In the Virtual Network Editor in VMware Workstation (version 9.0.0 build-812388), I want to change the subnet IP address of one of my host-only virtual networks from 192.168.203.0 to 192.168.124.0 (...
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1answer
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Window 8 machine cannot ping devices on same subnet

After returning from vacation during which several Windows updates were applied and my router suffered a hard power cycle, my Windows 8 Desktop can no longer ping other devices on the same subnet. ...
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Accessing a wireless router on a different subnet

Okay, I'll try to describe how this network is set up. I didn't do it personally, but it has been described to me. Firstly, we get our internet from a 3G wireless USB card from ATT. This means that ...
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3answers
576 views

How come I can ping google but not a PC on a different subnet within my campus network?

I am a newbie to the networking world. I know that one cannot ping two PCs connected to different subnets unless you have a router in between. But, I was wondering how come I can ping www.google.com ...
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1answer
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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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1answer
148 views

How to route between subnets

Experienced, but very limited network knowledge - please bear with me. I have a simple PPTP VPN server on my Ubuntu 18.04 server PC (yes, I know it's insecure, etc.). The router, PPTP server and VPN ...
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Why doesn't a router forward messages to hosts on different subnets?

I have a question about the following scenario: Host A has been configured with a static IP of 192.168.3.123/24 Host B has been configured with a dynamic IP of 192.168.1.55/24 The router has the IP ...
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1answer
2k views

Connecting two subnets

I have two linksys routers connected together LAN to WAN and I'm trying to establish connection between the two subnets. The secondary router is in a shed not in my house. I'd rather not do LAN to ...
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2answers
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How to configure router and devices for subnetting?

I am new to Subnetting a network so please bear with me. I understood all theory but not able to find any information or tutorials that can explain practical steps and configuration require to achieve ...
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1answer
315 views

Why does one have to enter subnet mask instead of simply number of 1-bits in the mask?

As I understand, subnet mask must be contiguous. So e.g. you can't have a mask of 255.1.0.0. The networks are often denoted as e.g. 192.168.5.0/24, which automatically contains all the information to ...
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1answer
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How to make Win 10 direct all requests to single ip/domain through network adaptor #2?

This is my setup: I wish to have Computer A use the ethernet (network adapter) and never use the wifi when attempting to communicate to Computer B (and vice-versa). Best case scenario: Domain ...
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One computer, Two LAN adapter, Two IP's in same subnet with DHCP

I have problems with networks. Troubles started when the ISP (Fiber) provided the same subnet for both lines. eth0 78.56.xxx.xxx eth1 78.56.yyy.yyy @:route -n Kernel IP routing table Destination ...
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Subnet mask for two networks

If we have the IP address 192.168.1.2 with subnet mask 255.255.255.252 then there are four addresses in the network and we can refer to the address as 192.168.1.2/30 Are addresses outside this range ...
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Access shared folder from behind Tomato VPN

This is my setup: (192.168.1.254)Modem->(192.168.1.1)Tomato(via cabel)->(192.168.1.148)PC(Shared folders). I was able to setup vpn for 10.8.0.0 and with 255.255.255.0, but only problem was, that my ...
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Networking: Connecting over subnets without changing subnet mask

I have attached a picture of the network setup in my house, I would like to know how to make any device visible across all networks without changing the subnet mask which is 255.255.255.0. . Thanks in ...
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3answers
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MikroTik Layer-3 communication between 2 hosts

Test question - mikrotik In MikroTik RouterOS, Layer-3 communication between 2 hosts can be achieved by using an address subnet. Which one of those "/29" "/30" "/31" "/32"? Why? I understand ...
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1answer
368 views

Creating a wifi subnetwork inside another wifi network

When connected to a public wifi network that I don't trust, I want to be able to: Connect multiple computers to the internet using wifi, through a VPN, without having to install VPN client software ...
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1answer
2k views

openVPN: use VPN only for a subnet

I'm using openVPN to access the cluster from outside the campus. But I only want a few ssh clients(Putty, WinSCP) to go through the VPN traffic. By reading several posts and wiki, I know there is a ...
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144 views

VPN access but can't Remote Desktop after changing subnet

I have VPN access setup through my Meraki MX100 firewall, and can VPN no problem. Remote Desktop was working perfectly fine on the VPN but a couple of days ago just stopped working. I get the usual ...
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1answer
679 views

Assigning IP addresses and subnetting on a home network

After 4 days of trying, googling, and tearing my hair, I have managed to bring down the internet at my home. I needed to implement the network as follows, however my efforts have managed to bring down ...
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526 views

2 APs over Powerline Network within same IP subnet cannot see eachother?

I am having issues setting up my home network using powerline adapters. My Setup I have a Gateway, a Router, 3 Powerline ethernet adapters, and a Powerline Wifi Unit (TP-Link TLWPA4220). All of the ...
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1answer
1k views

How to connect 2 home routers to connect 2 separate networks?

I don't know if it's a silly question, but I'm not very good at networking. So please help me out. I have a Netgear WNDR4500, and I configured my PCs and virtual machines setting the WNDR4500 (192....
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3k views

How to setup two-way routing with Tomato Wireless Client mode (different subnets)

Currently I have a Netgear R7000 as my main router, with internet coming from a Moto Surfboard SB6141 Cable Modem. I have a Linksys E3000 running Toastman TomatoUSB connected to the R7000 as a ...
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2answers
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Concise IP information in OS X Terminal

Is there a command for the OS X Terminal that shows you only the most vital IP configuration information about your machine? I know there is "ifconfig" but that brings up a bunch of (in most cases) ...
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3answers
384 views

2 routers, 2 subnets?

Firstly I will explain why I require this setup. I have bought an ASICMiner Cube for mining Bitcoin. It frequently stops mining until I reset it, which is quite troublesome. After reading the ...
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538 views

Shared Folders - Network Resource not Available

We have five computers (example "COMP1", "COMP2", etc.) at a remote site hooked-up to our domain. Each computer has a shared folder which gives full permissions to the local administrators group. To ...
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2answers
268 views

connect to subnet via VPN

i have VPN setup which is like this: ########### internet ############## internet ############ LAN ############ # macbook # --------> # VPN server #----------># PC A # -------># PC ...
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1answer
696 views

how to force an illegal netmask in ubuntu

I want to force a netmask on my Ubuntu machine. For example, I want 11.0.0.1 to get a netmask of 255.255.255.0 I tried editing /etc/network/interfaces and I forced the desired netmask, but as soon as ...
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1answer
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Samba share across two subnets

I am trying to access a samba share on CentOS7 from other PC in a different subnet. Samba version 4.4.4 Server: CentOS7 Clients: Windows 10, Ubuntu Mate, Windows 7. Subnet A: 11.22.66.64/26 (old) ...
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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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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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1answer
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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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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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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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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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1answer
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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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1answer
285 views

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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1answer
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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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1answer
53 views

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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1answer
46 views

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 ...