Questions tagged [ip-forward]
IP forwarding also known as Internet routing enables one workstation to sit on two LANs and to act as a gateway forwarding IP packets from one LAN to another.
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How to configure UFW to allow IP Forwarding?
I have UFW, OpenVPN and Virtualbox installed on my home server. I have a host-only network for my virtual machine guests (vboxnet0) set up with the IP range 10.0.1.0, and another IP range of 10.0.0.0 ...
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How can I set my linux box as a router to forward ip packets?
I am doing a network experiment about ip packet forwarding, but I don't know why it does work.
I have a linux machine with two network interfaces, eth0 and eth1 both with static IP address (eth0: 192....
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Internet connection sharing without Network Manager
I followed these instructions for setting up a shared internet connection with iptables. Specifically, I:
Added a network interface for my second NIC in /etc/network/interfaces like so:
auto eth1
...
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1
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IPv6 gateway computer - How to set up routing?
I'm trying to use a linux VM as an IPv6 internet gateway for another VM.
I have a server installed for which I received the ipv6 prefix 2001:abcd:1234:5678::/64 (Note I edited the prefixes for privacy ...
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Correct way to route between 2 interfaces with netplan in Ubuntu 18.04
Problem and Network Configuration
I am currently trying to allow communication between two interfaces, each with their own subnet, in Ubuntu 18.04 server using netplan but I am having a difficult ...
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1
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Forward port to local ip + port
On my Ubuntu 14.04 I have a service running on a local IP (192.168.33.99) and port 80. In my network, my Ubuntu computer has IP 192.168.2.3. Now I want to redirect all traffic on 192.168.2.3:8080 to ...
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How to forward an Internet connection to another network?
Can somebody please make a short & sweet tutorial telling how to forward an Internet connection to different network interfaces in Ubuntu...?
This is the idea:
I'm using a 3G usb modem to get ...
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2
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Route all traffic of a machine through another within a subnet?
I have two computers, both running ubuntu 12.04 64 bit. I need to route traffic of one computer through the other.
computer A: 192.168.1.3 (eth0)
computer B: 192.168.1.7 (eth0), 192.168.1.5 (eth1), ...
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1
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Virtualbox Server/Client topology
I have Ubuntu 14.04 desktop machine that VirtualBox installed on it.
I make two virtual machines, one Ubuntu server, the other is Lubuntu client.
The default setting allow me to get Internet from ...
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3
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1
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Setup Ubuntu Router with a subnet
I'd like to set up a private subnetwork within my home network. I've already read a few articles about this, but I'm not sure how exactly the /etc/network/interface file has to be set up under Linux. ...
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Help understanding iptables command
What does every part of this command mean?
sudo iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
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1
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Redirect Local DNS redirect a specific IP address
Apologies if this question already exists. I tried some topic answers, but isn't working yet!
I need to redirect some URLs to a specific IP, how can I do it in my PC? I need to redirect all traffic ...
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2
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ip_forward=1 in Ubuntu 20.04 after reboot fails
I have Ubuntu 20.04 configured as a router with nftables and frr (ospf configured) installed.
I have configured two interfaces (ens33 and ens34) in different networks,
forwarding is configured in /etc/...
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1
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Shorewall IP Forwarding Problems in 12.04 LTS
Internet connectivity through my 12.04 LTS shorewall box is spotty at best. Ping works both locally and to the internet with no dropped packets (from both the box itself and internal LAN). HTTP ...
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1
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Unable to establish network route
I am struggling to establish a network route from my laptop to another device. I will admit that my networking background is lacking, so sorry for the ignorance. I have the following setup:
[Device-A] ...
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Headless server no longer routing after minor fiddling with DNS and DHCP
Apologies up front for any spelling errors or anything, but I'm forced to write this post on my phone.
I'm running ubuntu 16.04.2 LTS headless which I also use as a router for my LAN. Typically I ...
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1
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ip forwarding between two LANs
I have 1 server which has 3 NIcs:
Connected to the Internet
Connected to LAN1 (10.0.0.0/24)
Connected to LAN2 (192.168.0.0/28)
LAN2 has a server that works on a port, say 4444.
How can I forward ...
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1
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0
answers
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Forwarding specific traffic to another LAN
There's a LAN of about 40 computers all running Ubuntu 15.04.
There are two servers, both Ubuntu 15.04.
One of the servers will act as a SVN repo server and other as a firewall-and-transparent-proxy ...
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0
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1
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bash: proc/sys/net/ipv4/ip_foward no such file or directory found
If I try to run echo 1 > proc/sys/net/ipv4/ip_foward
It gives me this bash: proc/sys/net/ipv4/ip_foward no such file or directory found
I tried to do sudo echo 1 > and, echo 1 | sudo tee with ...
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1
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How to forward internet connection at eth2 to LAN at eth1?
I have two network cards/connections:
eth2 is connected to the internet
eth1 is connected to my LAN
I want to allow the computers in the LAN on eth1 to access my internet connection on eth2.
...
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1
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How to work net.ipv4.ip_forward=1 correctly on Ubuntu 20.04?
I tried to create a simple router on the ubuntu 20.04 LTS server, so firstly I checked /etc/sysctl.conf and /proc/sys/net/ipv4/ip_forward:
$cat /etc/sysctl.conf | grep ip_forward
#net.ipv4.ip_forward=...
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Why doesn't work without masquerade?
I have router - G, my desktop - D, laptop - L.
I want to connect L to the internet via D.
G at 192.168.1.1
D: enp1s0 - 192.168.1.2/24, gw G,
eno1 - 10.0.0.1/16, serves as a router for L
L:
enp1s0 - ...
anon
0
votes
0
answers
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why does ipforwarding not work?
I have installed Ubuntu 22.04 on my laptop which has a LAN and a WIFI network adapter. The laptop is connected to the Internet via WIFI. I have another PC with a LAN adapter card. I want to set my ...
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0
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IP Forwarding Fails Ubuntu Server 22.04
Running 2 servers in VirtualBox.
Server 1 (will be the firewall)
$ sysctl net.ipv4.ip_forwward
net.ipv4.ip_forward = 1
$ sudo ufw status
Status: active
To Action From
-- ...
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0
answers
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Forwarding localhost to ipv4
I'm trying to forward my octant running on 127.0.0.1:7777 to ipv4 .
I have already gone to /etc/hosts/ and change the localhost to 192.168...
but not working
What else must I do to forward it to my ...
0
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1
answer
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Migrate from ifupdown to netplan
I try to migrate from ifupdown to netplan, but the result is always not same.
What is the correct netplan configuration for networking configuration like this:
auto lo
iface lo inet loopback
auto ...
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0
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VDS provider blocking port that I need. How to forwarded over other VPS
I have an Ubuntu 20.04 LTS. I was surprised to get to know that the VDS provider blocking port that I must to have opened. There is no way for me to push them to open it. I have to organize that port ...
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0
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IP forwarding but getting ARP requests
I have an issue with ip forwarding. Basically I have two interfaces:
eth0 - 192.168.9.2 - Routes to internal network (192.168.20.0)
eth1 - 192.168.8.100 - Routes to internet
pi@raspberrypi:~ $ ...
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0
answers
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How to setup iptables within VM bridge
I have the following system (upper diagram) which edge nodes send UPD dataframes to the central node, however, I want to the central node to forward them to the rest of nodes (bottom diagram). I don't ...
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1
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ubuntu 18.04 disable ip forwarding permanently
does anyone know how to disable ip forwarding permanently on Ubuntu 18?
I don't want any device connected via Ubuntu Hotspot to be able to reach any remote subnet, not even the Internet.
I manually ...
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1
answer
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package forward low performance and low forward speed in using Ubuntu as router
I have built a router based on Ubuntu Desktop 18.04.1(kernel: 4.15.0-32-generic x86_64).
I followed this guide https://killtacknine.com/building-an-ubuntu-16-04-router-part-1-network-interfaces/ .
...
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1
answer
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Forwarding VPN clients to internet
I have following configuration.
OpenVPN server on a cloud(Ubuntu 14.04) with static IP( example 50.60.70.80 on eth0). Linux and Windows clients are successfully connected to VPN (VPN static IP's - ...
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1
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IPtables Config to Passthrough Internet 16.04
I am struggling to finish the config on my Ubuntu 16.04 fileserver to pass on the internet connection to my HTPC. See the network layout below:
[Internet] <--> [DHCP Router] <--> (eno1).[...
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Is it possible to define a fallback gateway server?
I'm using iptables to implement forwarding on one server, that is support to forward traffic from an internal network to the internet (tutorial: http://www.revsys.com/writings/quicktips/nat.html)
On ...
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1
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Share Internet from laptop (connected to LAN) to Android using WIFI router
The idea is:
Internet - eth0 - Laptop - wlan0 - router - Android
Static IPs everywhere. IP ranges are different.
Could not establish bridge. bridge-utils unable to add wlan0 to bridge.
Android doesn'...
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