Questions tagged [subnet]
The subnet tag has no usage guidance.
26
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Multiple Network Interfaces on same subnet
I have multiple isolated networks that need to stay isolated but use the same IP scheme. 10.100.0.0/16. It’s special use networking and the 4 networks shouldn’t be able to see each other.
In a perfect ...
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603
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Netplan with Two Gateway Subnets on Same Port
Trying to configure an Ubuntu 18.04 machine with two IP addresses on different subnets on one ethernet port, each with a gateway so port forwarding works from different routers.
This was based on the ...
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720
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How To Add Docker Container Static Route?
Have a server with 4 subnets - 1 usable IP, each configured on separate network port on the network card. Running 4 docker containers, but they are randomly accessible upon reboot. How to add a static ...
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Ubuntu Server Netplan - conflicting default route declarations for IPv4 - 4 different /24s on each port
I have a server with 2 network cards of 4 ports, but only one of them is used. Each port is connected to a L2 switch and configured for a different VLAN with 1 usable IP from a different /24 subnet - ...
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LXD Bridge Prevents Network Access
Explanation before the question
I am trying to configure LXD on a raspberry pi using Ubuntu Core 20.04. It's local IP is initialized as 192.168.2.64. Before I run lxd init it was connecting to network ...
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How to manually specify document scanner IP address
Recently fresh/clean installed from 16.04 (to 20.04), where I was able to use the document scanner app to drive my Brother document scanner.
I'm trying to use the (Gnome) Document Scanner app on 20.04 ...
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1
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417
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Why does the Ubuntu Server installer ask for both a subnet and IP address?
When installing a new Ubuntu server instance, the installer asks for a subnet in CIDR notation and then it asks for an IP address without CIDR notation.
Why can't I just specify the IP address in CIDR ...
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43
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Two devices in the same network, but not same subnetwork
I have 2 Ubuntu systems in the same network. IP A is 149.201.37.66 and IP B is 149.201.55.106
I want to use a tool, which needs both systems to be in the same subnet: AAA.BBB.CCC.xxx.
I can ping both ...
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1
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108
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Connecting a remote client to an openVPN server running on Ubuntu
I am really stuck on this one - please help.
I have an openVPN server running on Ubuntu 18.04.
I have a Macbook running as a client.
The Macbook connects to the VPN server without problems if it ...
- 131
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161
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Ubuntu Server network setup help
I have been working for hours trying to figure this out but the installer wants some sub net format I don't understand and google can't provide and clean and clear answer to. I've never dealt with a ...
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25k
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Installation of server does not accept subnet CIDR
I try to install a server from scratch with a fixed IP address. For installation I use the provided ISO of 18.04.3 and the installation agent of Ubuntu.
First I thought that my understanding of the ...
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1
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163
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ubuntu server not accepting connections from subnets
Yesterday I rebooted our kvm server (added more rams) and now it will not accept connections from our VPN subnet. The VPN is working just fine as we can connect to any other resource on the network ...
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3k
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Ubuntu Router with different LAN subnets
I have an ubuntu 18.04 router with several LAN interfaces:
1st interface: 2 port 10G NIC (the interfaces are bonded/teamed)
bond1:
interfaces: [enp5s0f0, enp5s0f1]
2nd interface: 4 port ...
- 21
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72
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How to prepare a server for proxy on Ubuntu 16.04
I'm trying to prepare a proxy server using Ubuntu 16.04, my server has the following nics:
enp4s0 Link encap:Ethernet HWaddr 00:15:c5:f6:c0:36
inet addr:192.168.0.101 Bcast:192.168.0....
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virtualbox ubuntu network set
I am kind of new to Ubuntu and networking. I am trying to create on a VM (which is set on NAT network) to create two subnetworks. I tried to create on /etc/network/interfaces two new interfaces eth1 ...
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990
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Tunnel internet through laptop to other pc
Following setup:
I got a wireless network at home that my laptop connects to to access the internet. I also got an IOT2000 board, which is basically a small PC running Linux. My Router does not have ...
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Configuration of ufw for one user. Noob
I have several sudo users on Ubuntu 16 PC. ufw is disabled on this PC now. I need to switch ufw on for sudouser1. I need to make following config:
1) allow all and any incoming and outgoing ...
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1k
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Improve speed of "sshuttle" with multiple connections?
In the sshuttle documentation: "It’s valid to run sshuttle more than once simultaneously on a single client machine, connecting to a different server every time, so you can be on more than one VPN at ...
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How to SSH between Client and Host on Different Subnets, Same Network?
On Home Network with two subnets:
Client IP is 192.168.1.41 (Router subnet, netmask 255.255.255.0),
SSHServer IP is 192.168.0.3 (Modem subnet, netmask 255.255.255.0).
If I try to SSH from Client ...
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3
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3
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3k
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Connect to connected OpenVPN client from different subnet
I have a machine running Xubuntu 17.04 that is connected as a client to a VPN via OpenVPN (2.3.11). When I have the client connected, I can access the machine remotely via SSH and VNC if I am on the ...
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58
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Second Network Interface in Subnet of default route
I've got a 16.04 server with interface em1 in my companys a.b.0.0/16 subnet AB. For reasons reasons I can't change, there is a protected subsubnet ABC within this range called a.b.c.0/24 which I only ...
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share wired connection to wifi adapter ( external ) [duplicate]
I'm connected to the internet using wired connection and I have an external
TP-LINK wifi adapter. I want to bridge connection from wired to wifi adapter,
then to my iPhone. How can I do this?
- 235
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583
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IPv6 Host Discovery?
I am trying to discover all IPv6 hosts on my MASSIVE business network (like a /32 block).
I have an nmap script I think that works but sadly only for my local subnet. Would this work if I changed my ...
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1
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102
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How can I dynamically determine the IP mask to use for dynamic ranges?
I have a list of ranges for IP addresses that I want to block, the ranges are like 210.80.32.0 to 210.80.63.255
How can I dynamically determine the right 210.80.32.0/NUMBER to capture the full range? ...
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1k
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Installing Ubuntu OpenStack AutoPilot on VMware Workstation - network config
I am following the instructions here:
http://www.ubuntu.com/download/cloud/install-autopilot-testdrive
At step 2 (!) it says "make at least a full /24 subnet available", but there are no instructions ...
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2
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5k
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How to setup Multi Dhcp Server
I'd configure isc-dhcp-server and its works fine but now we are running out of range as we are exceed 255+ active devices.
Current configuration:
eth0: 192.168.0.1
I want to setup following things.
...
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