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

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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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50 views

How to route traffic to VPN thru other linux machine

In this case I have two machines RasPi and other Ubuntu server. My RasPi (192.168.100.105) has Debian and already established UDP openvpn connection. RasPi connect to remote VPN connection ...
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37 views

Gateway Unreachable via ping but other computers can be seen

I have been struggling with this for 2 days now. I assumed this will be a quick switch over but turned out to be be anything but. I had the following setup. One wlan adapter setup to 2 IP's. One as ...
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19 views

Web server not accessable from outside gateway

I trying to setup a web server using Virtual Box and Ubuntu Server. I've got the web server to access the Internet from behind a gateway (virtual box machine running Ubuntu server) but are unable to ...
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2answers
68 views

Trying to install 15.10 on a Laptop

I have a Gateway laptop that runs Ubuntu 14.04 from a external hard drive(long story). I am trying to install 15.10 from a usb drive to the windows 7 partition on the laptop so I can do away with the ...
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19 views

Gateway Unreachable, but reachable with other OS

Trying to install Ubuntu 14.04 (Server) as an ESXI VM (On a dedicated IP). The Ubuntu installer throws an error message of The gateway you entered is unreachable With the exact same gateway, subnet ...
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15 views

Internet access dissapears after some time

I have set up a static IP on my machine,but the problem that I am facing is that after some time my external access to the internet disappears.I can't ping any IP that is not my own. I have noticed a ...
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58 views

Setup gateway server for SSH over HTTPS?

I'm on host x, and I want to connect to <ommitted>.compute.amazonaws.com via host z. $ sudo nmap -sS <ommitted>.amazonaws.com Starting Nmap 6.47 ( http://nmap.org ) at 2015-10-21 17:39 ...
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How to set up Ubuntu 14.04 as a gateway using 1 NIC with 2 IP addresses on different subnets?

I have an Ubuntu 14.04 server with one NIC. The MAC address on this NIC is assigned (by the gateway) one IP (X.X.X.100) in one subnet (X.X.X.0/24), with the gateway being in the same subnet (X.X.X.1), ...
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69 views

How to make sure the server uses the gateway from eth0 at multiple DHCP network setup

I run a Ubuntu server in VirtualBox with 3 network interfaces. How can I make sure the default gateway is always the on from eth0. eth0 -> NAT, DHCP eth1 -> bridged, DHCP eth2 -> host only ...
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27 views

Accessing router with Ubuntu client from remote

Is it possible to use my router Dlink-655 as a (gate)way to watch Netflix when travelling abroad? In other words, can I connect to the internet abroad and from there to my router and use my router's ...
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51 views

What is my gateway name?

tcpdump -i eth0 gateway 192.168.1.1 tcpdump: 'gateway' requires a name route Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface ...
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14.04 LTS / Routing with 2 WAN Lines … on Dom-0 Xen host drives me nuts

Short note: Well I think I might have a solution but need to prove it first. Regarding the NAT on the Hardwarerouters to each WAN-line seem just to do NAT for its own subnet, so I will simply need ...
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96 views

Configure DHCP on Ubuntu 12.04 to share internet to subnet

I'm well aware of the plethora of documentation on setting up NAT and a DHCP server in order to share internet to a LAN. Here are a few articles that I think are getting me close, however I still ...
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98 views

Configure two ipaddress from same subnet using 2 Bridged adaptor VirtualBox

I have configured 2 interface with 2 Bridged adaptors in Virtual Box from same subnet, the /etc/network/interfaces file configuration for two bridge network is shown below. auto eth0 iface eth0 inet ...
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49 views

how to give access internet from a system with private ip

I want to access internet from a ubuntu 14.04 system with private ip. I have already enabled the Masquerading/Port forwarding on the machine having public ip. This machine with public ip is a CentOS. ...
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129 views

can't connected LAN with static gateway router

I try to connect LAN with my college network with static gateway router. My LAN is 192.168.0.0/24 and my college network is 10.42.11.0/24. But client (192.168.0.3) only ping router(10.42.11.243). ...
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110 views

How to configure gateway on a VPS Ubuntu?

I am setting up a DNS server on my vps, and came across on the reverse IP that must provide the gateway. However when I use the command route -n I have the following return: Kernel IP routing table ...
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53 views

Alternative gateway on ubuntu

I have one LAN card. I've divided it to sub interfaces. Is there solution to have different working gateways on this interfaces? I want when PC cannot reach to destination using first gateway it ...
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6k views

Ubuntu 14.04 as a Gateway / Router and a Firewall

My current system setup is Ubuntu 14.04 Desktop 64 Bit,and I am using Internet from a router using a public IP eth0 - WAN Public IP 182.x.x.x eth1 - LAN private IP 192.168.0.1 Now I want to ...
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33 views

Installing Ubuntu on NE56R

I have been trying to fix a computer for a client. There was no way for me to get back in to the system (the laptop came pre-loaded with Win 8.1), so I was unable to grab the PID. Now I am having a ...
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176 views

Supersede default route to other network interfaces

I have two network interfaces: wlan0 and eth1. wlan0 connects to a camera over WiFi, getting all it's info from the camera's DHCP (the camera itself hosts its own network). eth1 connects to the ...
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324 views

I can SSH into the server remotely but the ubuntu 14.04 cannot ping the internet

I've tried pinging google as well as 8.8.8.8. Neither works. Results for cat /etc/network/interfaces The loopback network interface auto lo iface lo inet loopback The primary network interface auto ...
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206 views

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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5k 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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981 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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136 views

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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322 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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992 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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288 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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1answer
702 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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376 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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1answer
224 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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525 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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10k views

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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1answer
309 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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166 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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1answer
344 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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1answer
4k 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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215 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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834 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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1answer
808 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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1answer
11k 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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1answer
3k views

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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364 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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1answer
135 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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1answer
512 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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1k 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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1answer
386 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 ...