A gateway is a network point that acts as an entry way to another network.

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linux gateway / firewall IPtables config

The KVM host is acting as a gateway / firewall for all of the virtual machine's it runs. It has a /26 public IP space configured on LAN interface em1: 1.1.1.1/26 It has a /30 rfc1918 IP configured on ...
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Ubuntu 12.04 keeps getting the wrong gateway irrespective of what I do

My Ubuntu 12.04 box connects via another machine on the network. I want to force a gateway of, let's say, 173.20.1.222. However, irrespective of what I have tried it keeps getting a gateway of ...
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99 views

Routing with virtual interfaces

How do I setup Ubuntu Server (14.04.01) with public eth0 and private eth1 to act as a router for multiple public/private IP pairs. eth0: 200.0.0.2 eth0:1: 200.0.0.3 eth1: 192.168.0.1 ...
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189 views

How to get default gateway with a dhcp

I have ubuntu 12.04 and I have configured /etc/network/interfaces like this auto eth2 iface eth2 inet dhcp I also have auto eth1 iface eth1 inet static address 60.60.60.1 ...
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273 views

No gateway ping in ubuntu and fedora, but ok on windows

I am facing a confusing problem. while using my home Wifi on ubuntu 14.04 amd64, my internet connection suddenly gives no response but in notification area it is shown as connected. I switched my ...
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Trouble Installing Ubuntu 14.04.1 on Gateway GT5404

I have a Gatway GT5404 (desktop) with 2GB's of ram and a newer HDD, and a refresh of windows 7 ultimate. Ive tried installing Ubuntu via USB by extracting the iso files into the USB, Extracting the ...
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68 views

How can I prevent being locked out after changing the iptables default policy?

I am working on a experiment when I (client) ssh a gateway and run sudo iptables --policy INPUT DROPthen the gateway doesn't accept any communucation(or input) from my client. By running sudo iptables ...
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104 views

Gateway Laptop not booting Ubuntu from USB

I have a Gateway MX8738 and when I try to boot my USB with the Ubuntu ISO on it it doesn't work. The POST screen stays stuck loading. Does the .iso need to be in a different format or do there have to ...
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406 views

Gateway Laptop Won't Boot From USB Drive

Well it kinda boots, but right when it should reach the screen to ask to install or try, I only get a black screen. I tried to put a HDD with Ubuntu on it in my laptop, it boots fine until it reaches ...
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My Gateway's BCM57765/57785 SD card reader isn't working

The device will not show up with "sudo fdisk -l". This is not just a corrupt card, it's been reoccurring for every card I try. This is the output from the dmesg [ 21.835685] mmcblk0: unable to ...
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How to make my ubuntu be a gateway / forward my WiFi connection over a LAN connection to a different machine

Sooo, the question is: Can someone please give me a neat step by step checklist i need to do to be able to 1) connect to a wireless connection 2) share (bridge?) that connection via LAN 3) have ...
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120 views

IPV6 dynamic route from DHCP

IPV6 was configured locally in my network in Ubuntu 12.04, where one of my machine runs the DHCP server and other as client. But the client was not acquiring the route from DHCP. Do we have to give ...
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237 views

Unable to ping inside or outside network with default gateway 0.0.0.0

I've been around here before and I could usually piece together everything to more or less get myself up and running, but this time I'm truly stumped. I'm trying to connect my new 14.04 install to a ...
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78 views

Gateway IP for eth0 and gateway IP for pptp vpn are same

My problem is.. I'm using laptop at school. In school, the default gateway for ethernet is 192.168.1.1. I want to connect to a pptp vpn server. The gateway over the vpn connection is also ...
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125 views

A question about the Internet/ConnectionSharing (NAT) via iptables

I'm following this tutorial to setup a NAT gateway: https://help.ubuntu.com/community/Internet/ConnectionSharing#Ubuntu_Internet_Gateway_Method_.28iptables.29 With simple eth0 as WAN and eth1 as LAN ...
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100 views

Conneted to wlan0, but have no internet

I have a problem that only occurs on my home network. If I log on to Ubuntu, I get a wifi connection, I have an IP-address, everything looks right, but I have no internet connection. I can use the ...
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45 views

How can I make Ubuntu 12.04 Desktop Guest VM as Gateway to VPN Network?

I have an Ubuntu 12.04 Desktop installed as a virtual OS via VirtualBox. Under network settings of the VirtualBox, I have set the Network Adapter to "Bridged Adapter". The Ubuntu's IP is set ...
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212 views

Two gateways and two interfaces

I wan't to configure my ubuntu server as shown below. I need the clients in the 192.168.3.0 network to access internet through gateway 192.168.0.14, but at the same time i need 192.168.0.13 router ...
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When are network, broadcast and gateway required for configuring a network interface manually?

https://wiki.debian.org/NetworkConfiguration#Bridging_without_Switching The above URL says, the following. But it is not clear to me when they are optional and when they are not. Could you provide me ...
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202 views

ubuntu 1310 with two NICs: one with dynamic address and one with static address

I am running Ubuntu 13.10 on a laptop with one physical wired NIC (eth0) and one physical wireless NIC (wlan0. The current config is shown below (I removed lo interface since it is of no relevance) ...
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125 views

How to unistall Ubuntu?

I have a Gateway laptop and I installed Ubuntu 13.10, and I want to revert back to Windows. I didn't do the dual boot option, just to let you know. Can anyone help me out?
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How can i give internet access to local network via DHCP/Gateway server?

I think i now find myself somewhere between cognitive overload and like a babe lost in the woods. Thus i hope someone out there can assist me! :) I setup a Ubuntu 12.04 server on my home local ...
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141 views

Network restart cleared my routing table help

I'm trying to set up a client and server VM to access the internet through a gateway VM, and I tried to change my server to allow IP forwarding and I was told to restart the network. I did, but now ...
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170 views

ip route - connecting two tun dev

Im trying to get two tun dev connected. If got everything, but the nat running. One tun is secure connection and the other tun for internet access. If got everything, but the nat running. There is a ...
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3k views

How can we make our ubuntu server router as gateway mode to router mode?

based on this sample guide link: http://ubuntulinux.co.in/blog/ubuntu/nat-configuration-with-iptables-in-ubuntu/ with this code: iptables –append FORWARD –in-interface eth1 -j ACCEPT it ...
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176 views

Tried install of Ubuntu onto Gateway NV79 = ends up with dark screen

Okay, I'm a total NEWBIE, so I apologize in advance if I don't word this correctly. :) I am trying to install Ubuntu (tried several versions) onto a Gateway NV79 laptop, using a USB drive. ...
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544 views

Wireless issues on Gateway M-6750

I've just installed Ubuntu 13.04 and I can not figure out how to get the wireless working, wired worked fine. I have followed a few instructions on driver downloads but I really do not have a clue ...
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577 views

How to make FN keys change brightness on Gateway m7315u?

I know this not a new issue concerning brightness, however, I am anxious to get this working. I added acpi_backlight=vendor to the boot parameters which allows me to change the brightness using ...
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252 views

Connect to a L2TP server from Ubuntu Server 13.04

I need to establish connection with the L2TP-server (VPN) from my Ubuntu Server 13.04 machine in order to gain access to the Internet. How can i do this? I can find a lot of guides how to do this ...
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6k views

creating a static route and a default gateway

Im having troubles with my routing table, im getting RTNETLINK answers: file exist How do i set my default gateway (internet) to 192.168.100.1? and a static route going to 10.169.5.0 /26? i have 2 ...
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Ubuntu as a Router/Gateway - Unable to access WAN

I am currently trying to set up a home router using a machine running Ubuntu 12.04. The machine has two ethernet ports. eth0 is LAN and eth1 is WAN. I have set eth0 to a static ip and have eth1 ...
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253 views

How website name get resolved?

I'm using Internet via a usb datacard on Ubuntu 12.04. I never configure domain name server. My question is how website name get resolved? Is there a inbuilt domain name server in system? if not ...
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124 views

Ubuntu 12.10 indicator-sound shows as mute (three hyphens

I kind of have a problem. I installed Ubuntu 12.10 and my sound seems to be fine. I can play videos etc. The trouble I have is the indicator-sound applet shows as a speaker with three hyphens as if ...
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help with configuring gateway - (newbe)

I'm trying to setup a gateway/firewall for our INTERNET site. my system properties are : Ubuntu 12.04 I've install webmin 1.620 i have 2 nic (eth0,eth1) eth0 will be connected to the Internet and ...
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426 views

Cannot set default gateway to specific LAN

Recently, I am trying to add a default gateway to my ubuntu machine to be able to send/receive packets from an another LAN through the router. However, everything I do the result is the following: ...
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992 views

Second NIC on dual homed server not working

I'm trying to set up a server with two IP addresses on different connections. The first NIC works fine (since I removed the gateway from the second), but I can't ping out or to the second NIC. ...
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287 views

Prioritizing WLAN over LAN connection

I'm using my LAN connection to work with a peripheral device, and I would like to use my WLAN connection for internet access. The problem is that Ubuntu considers LAN connection as priority, and ...
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638 views

ubuntu 12.04 dhcp gateway server

I need a little help. I will explain this the best I can so people don't have to ask extra questions. Essentially, I have a dell poweredge 2650, with 2 nics. eth0 goes to my cable modem, while eth1 ...
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1answer
222 views

Using Ubuntu as a gateway for monitoring and possibly IPS IDS within Active Directory

Ok, I've searched for days, maybe you can point me in the right direction. I have an MPLS scenario with a shared gateway in a multi-domain M$FT AD environment. On the inside of the MPLS all of the ...
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2answers
4k views

DHCP server with multiple interfaces on ubuntu, destroys default gateway

I use Ubuntu, and I have many interfaces. eth0, which is my internet connection, and it gets its info from a DHCP-server totally outside of my control. I then have eth1,eth2,eth3 and eth4 which I ...
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938 views

Running 12.04 as a gateway - resolvconf, dhclient and dnsmasq integration

I have a gateway server which is set up originally with Ubuntu desktop 12.04 - perhaps a mistake, I don't know, something to bear in mind. I ripped out network-manager and now want to get ...
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464 views

How do I set up user level restrictions on a gateway?

I am aware that Ubuntu Server can be used as a gateway to allow Internet connection to a LAN. Then we use IP tables or other firewall settings to restrict (for example), certain websites from being ...
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563 views

Is there a way to connect to a local pc via a gateway without having the gateway shine through?

When I'm at work I can use nautilus to navigate files on other computers of the local network comfortably. Nautilus mounts the other computers file systems using ssh (sftp via gvfs). However when I'm ...
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1k views

define static routes at boot

I'm running Ubuntu desktop 10.04 and on every boot the machine cannot be accessed from outside the LAN. after running sudo route add default gw 192.168.1.1 everything works as expected. Is there any ...