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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.

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.

Subnetting provides a way to use the number of IPv4 addresses in an optimal way. The previous notation with classes caused a lot of IP's to remain. In the beginning this was not a problem, but these days IPv4 addresses have already depleted at the top level.

Source: wikipedia

Tutorial on subnetting

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Branch office MPLS connection with 2 different subnets

We had VOIP phone service and an MPLS connection between our main office and a branch office installed recently. The genuis who set things up created an internal network at the branch office using 10.11.0.0/24. Our main office has an internal…
Hutch
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Need explanation for a public WiFi network

I came across this network on a public WiFi on a Railway Station. I wanna know the network and the details and most specifically, how I was able to get an IP from the range 100.x.x.x as Private IP ranges are 10.x.x.x, 172.16.x.x-172.31.x.x &…
Saki Osive
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How to open entire subnet with iptables

I want to enable the entire subnet 192.168.1.0/24 which is connected to eth0 in input. I'm very unfamiliar with iptables. If I add the rule: # iptables -A INPUT -s 192.168.1.0/24 -p tcp -m tcp --dport 45678 -j ACCEPT it works on ONE port. But we…
dargaud
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AWS - What do we mean by associating a subnet with an elastic network interface?

I'm trying to understand the meaning of this output: [user@ip-10-1-3-12 ~]$ ip route default via 10.1.3.1 dev eth0 default via 10.1.0.1 dev eth2 metric 10002 10.1.0.0/16 dev eth2 proto kernel scope link src 10.1.200.200 10.1.3.0/24 dev eth0 …
user1071840
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Sonicwall 240, different subnets

I have sonicwall 240 for now x0: Lan 192.168.25.1 x1: Wan my internet connection x2: DMZ 192.168.102.1 I want to add x3 as new subnet with this address 170.20.120.1 what should I do? Thanks Regards
user218306
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Subnet mask calculation

Possible Duplicate: How does Subnetting Work? I watched some videos about subnet masks and ip addresses, but I have a question that I couldnt find an answer for it, how to approach this question? A PC’s IP-address inside a subnet is 203.34.27.1.…
Dumbo
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Problem regarding sub-netting and sub-net mask

Possible Duplicate: How does Subnetting Work? An organization is allocated the IP block of 172.16.0.0/16. It has a head office and three branches each of which can have 500 to 4000 hosts. You are required to subnet their IP block and suggest…
nirmal
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Difference between connecting from inside and outside a subnet

Let's say provider granted me IP addresses 10.20.30.1 - 10.20.30.254, so the subnet address is 10.20.30.0 and mask 255.255.255.0. I set my router to 10.20.30.1 and computers to 10.20.30.2 and higher. Now, what is the difference between accessing…
Youda008
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What is a subnet?

My company has our printers provided by a contractor via a managed service. The contractor has software installed in our network which is supposed to detect the printers and then report back on the print volumes. This software is not working…
pgunston
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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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