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

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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
33 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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24 views

Understanding subnet mask on Ubuntu 14.04

Currently my broadband ISP connection is down. I accidentally altered my subnet mask id on Network Manager. When I entered the original value again it does not save it. Instead it saves 192.0.0.0. ...
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34 views

Networking (subnet)

I am new to networking and I am trying to learn about it. I can't make my on subnets. My questions are: What does "there are possible 32 hosts" mean? Do hosts address and ip addresses change from ...
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27 views

What does (Preferred), (Tentative) and (Duplicate) mean against an IPv4 Address with ipconfig

I have been tinkering with subnets and have noticed the above as annotations to the IPv4 line of ipconfig. IPv4 Address. . . . . . . . . . . : 192.168.1.241(Tentative) IPv4 Address. . . . . . ...
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24 views

subneting a small store

I have a friend with this small store/cyber and want to divide the network like this clients can only see other clients registers can see other registers admins can see everyone I currently have a ...
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1answer
44 views

Access subnetwork by networks IP

I have a router in my house which has some IPs assigned. By default the router creates a sub-network. Can I access a device in my sub-network (IP example: 192.168.1.3) from outside that sub-network ...
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27 views

How route two subnets when they are connect to a same router?

I have a Router has 4 ethernet ports, eth0 to eth3, with OpenWRT inside and such configurations: Interface lan1 involves only eth0, IP address 10.10.0.1/16 Interface lan2 involves only eth1, IP ...
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22 views

We're having our receipt printer provide a very unusual subnet mask. Has anyone experienced anything like this before?

Thanks in advance to anyone who can help me out with this. We're using a custom receipt printer which was bricked in DHCP for quite a while. Every method we used to change this gave no result. We've ...
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1answer
68 views

Setup 2 VLANs with 2 subnets?

I have one modem - Cisco DPC3010, 2 routers - Netgear WGR614v7 and Linksys BEFSR41v2, and a managed switch - TP-Link TL-SG108E. Everything seems to be setup correctly for the 2 subnets but I can't ...
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83 views

Practical (not theoretical) Subnetting 192.168.0.0/25

The Situation I have a Netgear WGR614v7 router (wireless disabled). Hosts in both subnets should have internet access but should not be able to ping hosts across the subnets. I want to split my ...
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2answers
34 views

Is this subnetted IP address valid?

I'm learning subnetting at the moment and I'm unsure whether this is considered a valid IP address. 150.16.5.255/21 My teacher asserts that this is invalid because it is a broadcast address of one ...
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107 views

LAN to LAN with different subnet

Is it possible to have 2 routers to communicate to each other via LAN to LAN (not LAN to WAN) despite both have different subnet? Topo: Router 1 (192.168.1.0/24) Router 2 (10.0.0.0/24) For ...
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21 views

Is there any way to route between more than 2 subnets on a single (home-spec) router?

I'm not a typical network admin, it's all new to me. But I've done my homework, and I'm expecting the answer to be a flat "no", but I decided to ask anyway - just in case I'm missing something. Just ...
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1answer
23 views

What are the differences between a private network and a subnetwork?

And what are the advantages of creating subnetworks if computers are assigned different IP addresses from the same range and can communicate with each other also with switches?
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43 views

Accessing one subnet (Allnet) from another (Thomson TG712) on a local network?

I have this situation: The Thomson Gateway TG712 is received from provider, is a phone line/DSL modem, with 4 wired LAN (RJ45) connectors, as well as wireless. It assigns to itself 192.168.1.254, ...
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48 views

how to set up subnetwork at home?

I'm trying to achieve something that, I believed would have been very simple to set up, but I'm struggling at making this work. Basically, I have a ISP router with an internet connection, from there, ...
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24 views

IP overlap with cisco packet tracer simulation

PC 1 Network IP fa1/0: 192.168.1.7 /27 IP range: 192.168.1.0-31 Subnet Mask: 255.255.255.224 Router - When I type in the router IP fa1/0: 192.168.1.7 255.255.255.224 I keep getting error saying that ...
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14 views

MS Routing Server not routing from Hyper-V External Adapter

I've searched this issue but i'm not able to resolv it. I'm not able to route to a subnet! Here is a high level overview of my env: Network Overview What does work: From the MS Routing Server: ...
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31 views

How to access a pc on local network from main network

We are in college and every room of two people has only one lan port. We belong to a college subnet: 172.31.80.218/26 Now I am connected to our lan port and have the above IP. I create a wifi hotspot ...
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1answer
43 views

How can I make my routers interconnected?

I work in a small business that has seven of the same routers around the building, which means seven SSIDs. What I am wondering is, is there anyway to make them interconnected so that they can ...
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2answers
175 views

Use ubuntu 14.04.3 box as a wireless access point, no dhcp server and eth0 to wlan0 bridging

I noticed that I had a 300Mbps N wireless adapter laying arround so I decided to use it in my ubuntu server to expand the range of my local nework, that server is being used as a samba and ftp server, ...
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3answers
41 views

Routing across subnets

We have an IP phone system on a 172.16.x.x address. This is a live system which we use every day so we know it works. The confusing part is; all the desk phones are on 172.16.1.x whereas the gateway ...
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35 views

Windows subnetmask, what's the use?

I'm in a company network where we're using two subnets: 192.168.0.* and 192.168.3.*. These are my IP's: 192.168.0.97: PC / testserver host 192.168.0.108: laptop 192.168.3.192: mobile phone The ...
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Linking Subnets Over DDWRT Wireless Client

This ones had me going for a few days. I have a Uverse supplied Motorola NVG589 that supplies our TV, phone, and wireless internet. In my room I have some networking gear which include an ASUS RT-...
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20 views

Route all WAN traffic from a subnet through a separate ISP-connected subnet

I have 2 routers that I will call, HOME_ROUTER and WORK_ROUTER. HOME_ROUTER is for home use and is connected to my ISP and WORK_ROUTER is for work use and is connected to noisy video encoders and ...
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1answer
30 views

Windows 7 firewall different subnets

I'm on a large company network with different subnets. There are a few win7 computers that I have admin rights on, but I'm not able to access their drives through different subnets. I can access the ...
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2answers
95 views

Class c private address of 192.168.1.0 what subnet for most amount of host addresses?

Can someone help me out? I'm sure it's 255.255.255.192 since we have to make it into 3 networks. Am I correct? You are the network administrator for a health authority in Idaho. The administration ...
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3answers
98 views

What are the best Subnet IDs for maximum number of hosts?

I need help with this problem. I know it must be either A or D since subnet mask 255.255.255.224 has the most amount of hosts. I'm confused on subnet IDs could anyone clarify why subnet ID 224 would ...
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1answer
34 views

Guest Network and NAS

I am trying to setup a network where I can achieve several things. I might be overthinking this, but here is how I envision it working: I am willing to use 2 or 3 routers I want a network or subnet ...
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36 views

Cascading Cisco RV180 and Linksys E2000

I am trying to cascade 2 routers in my home network. I have an Actiontec DSL modem connected to the WAN port of my Cisco RV180. I am trying to connect a second router, a Linksys E2000, to my ...
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43 views

What is the correct subnet mask to use on a Class B network with a 10-bit subnet identifier?

I thought it was D but I got it wrong does anyone know what the correct answer is and why? A. 255.192.255.255 B. 255.255.255.192 C. 255.255.192.0 D. 255.192.0.0
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98 views

What is the correct formula for calculating the number of subnets or hosts you can create with a given number of bits represented by x?

I'm pretty sure it is 2x-2 but want to make sure I am correct. Anyone have a say and why? x2 + 2 2x + 2 2x – 2 x2 – 2
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38 views

I FUBAR'd the IP, subnet, and VLAN settings. Now how to access managed switch?

I have a Dell powerconnect 2748. I think I have done messed it up though when setting it up because so far I have not been able to access the webconfig of the switch after I changed some settings I ...
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244 views

How to find subnet mask only knowing the usable address

I'm studying for certification and during a simulation I stumbled in question that made me realize I wasn't so sure about calculating IPs and masks stuff. There it is: A company has a forest with 4 ...
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1answer
35 views

Semi Network Isolation

Warning: I sincerely apologize for any kind of ignorance displayed on my part. I am not a network engineer and I do not know anything more than how to mod routers into network switches and plug in ...
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59 views

Given starting network, how many subnets with 128 address can you form

Given a starting network of 172,20.12/24, how many subnets with 128 addresses can you form? I thought the answer was 8 because 2^8 - 2 = 254 > 128 but that's incorrect It also asks for the first ...
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52 views

Server is missing default gateway information?

I'm studying for my Network+ Exam. I'm going through some practice questions, and this one has uber-stomped me in the brain. I've been going through my textbook too, and can't find a concrete answer, ...
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3answers
481 views

Dividing a network into subnets

I'm finding it very hard to understand IP subnetting. The things I already know how to do: Given an IP-adres and a subnet mask, I'm able to find all ip adresses in the subnet. Given an ip adres like ...
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102 views

Subnets on hyper V

What I'm after is a hyper V host, hosting around 6 vms. 3 of them on 1 subnet 3 of them on another And I want them all to have internet access The 2 subnets don't have to communicate. I'm using ...
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3answers
551 views

How to create a subnet between two different networks

I need some help to build my first subnet between two routers. My office is located near another office, and those two offices are linked together with a network cable, and both offices have ...
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1answer
71 views

subnet id, why option (2) is wrong? [closed]

An Internet Service Provider (ISP) has the following chunk of CIDR-based IP addresses available with it: 245.248.128.0/20. The ISP wants to give half of this chunk of addresses to Organization A, and ...
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109 views

Ubuntu ethernet connection and wireless access point on the same subnet

I am running Ubuntu 14.04. I have a usb wifi adapter that has AP according to iw list. Currently my ethernet (eth1) connection's address is 192.168.1.108, and my wireless (wlan0) access point's ...
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Are subnets always contiguous 1s? [duplicate]

I understand the basic premise behind subnet masks, such as 255.255.255.0. But all the subnet examples I’ve seen have been (from left-to-right) contiguous 1s (HI bits). For instance, 255.255.0.0 (/16) ...
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How to tell if a dedicated subnet is available to a Linux server?

I'm trying to install Kubernetes and am reading an article about it that states: One key assumption that Kubernetes makes is that a dedicated subnet is available to each minion server. So I ask: ...
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1answer
153 views

VLSM: Any easy way to learn it

After my first year at university our teachers decided to make VLSM exams and exercises a bit harder. For exactly 1 year ago we got 3-4 hours to subnet using VLSM and then start with Packet Tracer ...
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579 views

Traceroute hops in the same subnet

in what case is there two neighbor hops in the same subnet in a traceroute output? As I know it should be only source addresses and each router interface should be in different subnet? E.g.: 1 ...
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4answers
152 views

IPv4 Routing/Subnetting

Suppose there is a setup like below: ------ -INTERNET- ------ |...
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1k views

Trying to understand the interactions between two different subnets on the same network

I have a 10.0.0.0/8 network split into two parts. A DHCP server hands out addresses 10.0.0.10 to 10.0.0.150 with a class A mask (255.0.0.0). This is my “Guest” portion of the network. Authorized ...
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138 views

Broadcast address for address 144.16.95.255?

A subnetted Class B network has the following broadcast address : 144.16.95.255. Its subnet mask (a) is necessarily 255.255.224.0 (b) is necessarily 255.255.240.0 (c) is necessarily 255.255.248.0 (...