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Questions tagged [subnets]

The tag has no usage guidance.

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Ping a network hosted in a server from hosts in different subnet

Setup and Environment Host A is Ubuntu VM (GNS3). All other Servers are RedHat. Network Path [Host A(x.x.y.b) --via-- Host B (x.x.y.a)] ----|---- [Host C (x.x.z.c) & Host D (x.x.z.d)] Host A ...
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1answer
62 views

What is the network 169.254.0.0/16 used for in the routing table on a virtual machine?

What is the network 169.254.0.0/16 used for in the routing table on a virtual machine (guest: Debian; host: Lubuntu)? How can I find out some or all the network interfaces assigned with IP addresses ...
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1answer
169 views

meaning of “brd” in output of IP commands

In the following example: $ ip a | grep scope.global inet 147.202.85.48/24 brd 147.202.85.255 scope global dynamic enp0s3 What does the 'brd' mean?
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1answer
105 views

OpenVPN configuring client to use subnet topology results in “inet prefix is expected rather than 10.66.10.6/-1”

Right now whenever I connect to a (commercial) VPN server a tun interface spins up with an inet address assigned to it as well as a peer one (whatever that means). root@mininet-vm:/etc/openvpn# ip -4 ...
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1answer
217 views

Access IP address on different subnet without gateway

I have an USR-TCP232-S2 IP-to-Serial converter and I would like to access it over Ethernet to set it up. The module comes with a fixed IP address 192.168.0.7. My PC (Lubuntu 18.04) is however on a ...
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2answers
550 views

grep for an IP range?

On a RHEL 7 box whose local IP address is 10.0.0.159, the following command prints out the IP 10.0.0.159: $ echo "$(ifconfig eth0 | grep -Eo 'inet (addr:)?([0-9]*\.){3}[0-9]*' | \ grep -Eo '([0-...
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2answers
939 views

How to route to a gateway on different subnet? [closed]

My network is on 10.3.4.x/24, with my router on IP 10.3.4.254. I need to ssh access my server on IP 10.3.4.100 but when I set up the server I forgot that I restricted ssh access to 192.168.x.x IPs ...
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1answer
1k views

dhcpd and bridge - No subnet declaration error

I prepared dhcpd configuration in Debian 8 and it successfully worked but then I added bridge and dhcpd failed. bridge: root@remote:/home/s# brctl show bridge name bridge id STP enabled ...
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1answer
72 views

Separate two network bridges on linux

I am currently trying to setup a router for my homenetwork using linux (Archlinux to be more specific). The embedded board i am using has 3 lan interfaces, called wan0, lan0, lan1 and two wifi cards, ...
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1answer
22 views

Is there a way to setup a computer to talk to two different devices on different subnets which are physically connected?

Situation: I have 3 devices on an Ethernet network. 1) 172.30.40.100 (Ubuntu 14.04) 2) 172.30.41.101 (other) 3) 192.168.30.102 (other) I would like to setup 1) to be able to send msgs to both of ...
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1answer
764 views

Check overlapped subnets

I want to know if there's a way to check if some subnets are (or not) overlapped with a List of IPs For example, we have this List: 197.26.9.128/25 193.36.81.128/25 194.33.24.0/22 188.115.195.80/28 ...
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1answer
226 views

Samba share not accessable from other subnets

Thanks for taking a look to my issue and think with me for a solution. I have a samba server on a subnet 172.23.3.55/23 (2.0 --> 3.255) and within that subnet I can access the server no problem. Also ...
3
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1answer
938 views

How to set the subnet of a network interface?

For an assignment I'm setting up a router in Linux and I have to edit the p7p1 config file to set the network up. One thing I have to do is set the local subnet to 172.27.13.0/24. I'm assuming this ...
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0answers
240 views

CUPS: use printers in different subnet

I am trying to configure a cups server located in a subnet, that have to comunicate with printers installed in others subnets. For example: cups server ip: 192.168.0.1 /16 printer 01 ip: ...
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0answers
44 views

Setting the same host address on different networks

I have a set of devices to be deployed on different local networks which have to be configured without DHCP. Every network has the same subnet mask and the gateway and the device in every network ...
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1answer
269 views

Debian Server with 3 NIC Communicating with 3 different IP subnets

I have an ISP billing system installed on Debian GNU/Linux 8, which has 3 NIC cards. The Server is connected to 3 Mikrotik routers. Each router is connected to different internet lines which means ...
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1answer
556 views

CentOS 7.2 Virtual Machine Manager - VMs on different subnet cannot ping third VM

I have a CentOS 7.2 host running Virtual Machine Manager, there are three guest VMs on this host (all are CentOS 7.2) Two servers (A and B) are on the same network 192.168.122.0/24, they have the ...
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0answers
197 views

Resolving conflict between openvpn subnet domain and local subnet domain

I connect to my employer's network via an openvpn setup. That gets me into a 192.168.22.0/22 subnet, with a gateway into the real network I need (inside my employer's internal net) at 192.168.20.0/22. ...
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1answer
12k views

Routing Between Multiple Subnets

Let's say I want to create an internal network with 4 subnets. There is no central router or switch. I have a "management subnet" available to link the gateways on all four subnets (192.168.0.0/24). ...
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1answer
228 views

VPN Clients only can connect to other machines after ping

I have a weird problem. I have an OpenVPN server up and running. When my VPN clients (10.0.0.x) try to connect to another machines (192.168.0.x), they fail (I tried netcat, telnet and SIP). If I ...
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1answer
161 views

debian libvirt 2 subnets

I want to create a network like this: I have a virtual host which is conntected to my physical router with eth0 and ip4 address 192.168.178.100. I create a virtual machine dmz which connects 'direct' ...
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2answers
882 views

Is a subnet required for a dhcp.conf?

I am setting up my dhcp.conf file for my dhcp server. All documentation says you 'can' define subnetworks but I have not seen and example without them. Definitions of a subnetwork say they are a ...
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1answer
6k views

Virtual Box guest on different subnet than host

I currently have my Debian VM using NAT and it is on subnet 10.0.2.x where my host is on 192.168.0.x how can I get my guest on the same subnet as my host? Host: Ethernet adapter VirtualBox Host-...
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1answer
260 views

How to assign two iface to different subnets?

I have a ethernet connection eth0 and a wifi usb connection wlan0 on my raspbian box which both connect to a router with internet. In my etc/network/interfaces file I have a setup that allows me to ...
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2answers
328 views

Meaning of address netmask without route to subnet?

My understanding is that the netmask of the interface tells what subnet the interface belongs to. Meaning of this information is that the routing system knows that packets to this subnet should be ...
0
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1answer
6k views

AWS VPC NAT | ssh_exchange_identification: read: Connection reset by peer [closed]

I had a tough misleading error while connecting in AWS VPC subnets. The error did occur in B->A connection, and did not happen while A->B, so at the beginning I thought that it is library bug. It ...
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1answer
68 views

Network: how they obtain 127 subnets? [closed]

I read on a book about networks that class A has 16777214 hosts and 127 subnets,my question is: how they obtain the 127 number?