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4
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1answer
9k views

Using Ubuntu 14.04 as router with iptables, clients can't go online. Probably DNS issue, iptables setting needed

CORRECTION 3: SOLVED! I needed to add the the official DNS server of my departement's VLAN as DNS to the clients. I've read through a large number of posts about iptables issues when using Linux as ...
2
votes
1answer
64 views

Gateway routing failure after upgrading from 14.04 to 16.04

I've just upgraded my Ubuntu 14.04 gateway system to 16.04 and somehow the routing has been broken. The system uses a pppoe link to a fibre-modem and runs web, email and DNS services with a shorewall ...
2
votes
1answer
2k views

OpenStack Neutron outside communication through router doesn't work, local between VMs does

I am pretty lost with this one for few day now and can't move further. Any ideas will be very welcome. My private net for VMs: 10.5.5.0/24 Outside link via 192.168.22.0/24 (my router's IP 192.168.22.1)...
2
votes
1answer
2k views

OpenVPN - Routing issue

Server: Ubuntu 11 (Openvz VPS) Client: Windows 7 Issue: clients connect successfully to VPN, but loss of internet access once inside the VPN. Facts: Everything mostly defaults Is a routing/...
2
votes
1answer
116 views

Networking and Traffic routing question

Hello I had a few of questions related to networking, let me list them in a logical order: 1) Can multiple interfaces be bridged together so that it results in increased bandwidth? 2) Can wired and ...
1
vote
1answer
173 views

Routing two subnets without hiding hosts?

I have two subnets, let's say 192.168.1.0/24 and 192.168.2.0/24, which are connected by one Ubuntu server with two interface cards (eth0 and wlan0). There are lot of descriptions using NAT in a way ...
1
vote
1answer
392 views

Routing in computing cluster

I'm trying to set up a computing cluster composed of four nodes. Each node have 2 interfaces p1p1 and p2p1. The first node - head node - should be visible form the outer world. It should route all ...
1
vote
1answer
159 views

Question about routing VMs with static IPs in Ubuntu (Unsolved)

I have a server with an external provider that is running Ubuntu 12.04. The server is having a static IP. I have installed VMware workstation and I am running some virtual machines, one of them is for ...
1
vote
1answer
318 views

How to IP forward only between 2 interfaces out of 3 installed?

I'm using ubuntu 12.04. There are 3 NIC on my PC but I wish to do ip forward only on 2 of them that act as a router. The 3rd NIC need to be separated from the other 2 and not be able to see the ...
1
vote
1answer
130 views

Routing 2 ISPs to 2 different networks

Ok, so here is my scenario. eth0 and eth3 point to 2 different ISPs, eth1 is an internal network say on 192.1.1.0 and eth2 is on another network say 10.1.1.0. I want each network to be on their own ...
0
votes
1answer
40 views

Ubuntu 16.04 Port forwading troooble 2 x NIC

I am trying to setup a Gateway / Firewall between our router and Windows AD network! I have followed a lot of instructions and tutorials on the web but i am still missing something as i cannot get ...
0
votes
1answer
39 views

Routing issue gateway

This is the first time ever I am posting something, so if I am doing wrong please tell me. My issue is that I have an ubuntu server with 2 network cards. One is connected into the internal network ...
0
votes
1answer
55 views

Ubuntu newbie needs network and routing help

I've installed 14.04 server, configured DNS and DHCP for my local network which all seems to be working OK. This is connected to eth1. I've installed plex which I need to connect to my drobo where all ...
0
votes
1answer
50 views

Routing private network

i'm newbie to NAT & Routing, I have an Ubuntu pc with 2 NIC's eth0 which is connected to a private Network with ip 172.16.10.0/24 and eth1 connected to 10.3.0.250/16 and eth1 connects to the ...
6
votes
0answers
4k views

Integration multiple internet connections ISPUnity vs Ubuntu Bonding

I have Ubuntu 13.04 with 2 ethernet cards and a WiFi card. I also have 3 ISP connections. I have to configure linux to use all 3 connections. My main concern is to increase outgoing bandwidth (FTP ...
3
votes
0answers
896 views

How can I tell Ubuntu to keep the correct routing table?

Ubuntu sets a wrong routing table if the router is switched off and on again: Destination Gateway Genmask Flags Metric Ref Use Iface 0.0.0.0 192.168.1.1 0.0.0.0 ...
2
votes
0answers
87 views

How to stop network manager changing my gateway?

Environment: Ubuntu 14.04 Problem: I want to connect to my VPN at work from home. Whenever I connect to my wireless, my route is set up to the work route. The home gateway is supposed to be 192.168....
2
votes
0answers
151 views

Connecting to VPN server closes SSH tunnel

Once I start to connect the VPN, I immediately lose the connection to my dedi-server. My aim is to still be able to ssh to my dedi-server, even if I connect to the external VPN server with my dedi-...
2
votes
0answers
162 views

Ubuntu router with 2 NICs, traffic stops and I don't understand why

I'm currently running a Beaglebone black with bone-ubuntu-14.04-console-armhf-2014-08-13-2gb.img (or a more recent version), which acts as a firewall / router. It has two network interface, one USB ...
2
votes
0answers
495 views

iptables, forwarding between interfaces

I'm trying to setup a router using iptables. But, after a lot of examples I've tried, I can't get anything to work. My idea is to setup a box in between my Cisco and the main switch for firewall, ...
1
vote
0answers
70 views

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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0answers
99 views

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 ...
1
vote
0answers
168 views

Routing traffic over p2p1 and tun0 correctly

I have been trawling these questions and trying many different solutions to get this working, but I seem to have a problem with getting my routing set up correctly. I have a box installed in a network ...
1
vote
0answers
338 views

openconnect either no internet or no network access

I tried to use openconnect as alternative cisco-pvn client. When connecting to the vpn, my internet connection gets lost but my intranet connection works. This is a common problem and the suggestion ...
1
vote
0answers
37 views

Basic Network Routing Question

I guess this is a very basic (dumb) question about routing. If I specify a route do I need to worry about a return path or does that also need to be specified? For example I have a WiFi hotspot on ...
1
vote
0answers
95 views

Ubuntu as a bandwidth throttling box on windows network

I need to test the performance of some applications over different capacity connections (broadband, EFM, LAN extension etc). How would i configure an Ubuntu server to sit between the main network (17....
1
vote
0answers
96 views

Routing error for a single IP address

One single IP address is routed wrong by one of my Ubuntu server 14.04's. This happens for the second time in about a month. The route it should have taken is to another server in the local network, ...
1
vote
0answers
569 views

Installing xubuntu-desktop breaks cloud-init (routing to 169.254.169.254)

Run Ubuntu Server 12.04 (or a later version) in a VM. Reboot. Cloud-init continues to work. Then install xubuntu-desktop. Then reboot; you will see that there is now a broken route to the link-...
1
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0answers
543 views

Permenant Route Addition

I'm trying to add a route permanently to my VPS, at the moment I have to run the command manually every time I find out the server has rebooted. I read somewhere I had to add something to /etc/network/...
0
votes
0answers
32 views

Added route drops inadvertently

On my Ubuntu 16.04 I'm using local net and mobile internet via Android phone. I'm completely novice at routing but this is what I have. Just after connecting phone I have routes table: default via 10....
0
votes
0answers
13 views

Tool to generate multiple FIB entries on multiple NICs

Lets assume: I have 4 NICs on my Desktop. I have IP_Forwarding enabled. Using any OS: Generally, I have ONE routing table. This is provided in the FIB entries, and is used by all the 4 NICs. Just for ...
0
votes
0answers
59 views

Routing between two networks

Network #1 is my network. 192.168.1.0. The gateway is 192.168.1.1 Network #2 is another network I want to access. 192.168.2.0...gateway 192.168.2.1 On the Ubuntu server that has two interfaces and is ...
0
votes
0answers
22 views

Why device can't see another device on Adhoc network?

I setup AdHoc network on Ubuntu with 1 computer and 2 UDOO boards(small pc with ubuntu) on wireless. Then I give them static IPs. When all device are together, I can ping each of them from each ...
0
votes
0answers
28 views

static route not getting picked up in linux routing table

I have a static route configured in /etc/network/interfaces file, but when i reboot, the changes in file is not taking effect in kernel routing table. I am using ubuntu 16.04. contents of file for ...
0
votes
0answers
2 views

Enable routingon linux machine

So i have 3 machines. 1)172.16.10.200 same netwrk as 2 2)172.16.10.198 same netwrk as 1 3)172.16.1.201 different network How to make 3 ping 2 and 1. I'm making 1 the router. It has 2 interfaces. ...
0
votes
0answers
70 views

How to route Ethernet network to Wifi network for internet access

I am trying to setup a small RaspberryPi 3 cluster using Docker Swarm and a custom image for the RaspberryPis from HypriotBLog. I have two network ranges, 10.x.x.x on my ethernet card connected to a ...
0
votes
0answers
97 views

RTNETLINK answers: Invalid argument

I have to add route to host 10.100.105.80/26 via gateway 10.100.178.129 but while giving the command : ip route add 10.100.105.80/26 via 10.100.178.129 dev eth6 RTNETLINK answers: Invalid argument ...
0
votes
0answers
50 views

Route add persists in Ubuntu Server 15.10 but not Ubuntu Desktop 15.10

When issuing identical route add -net 192.168.0.1/24 gw 25.142.124.197 metric 5 dev ham0 command, the existance of the route in route persists over a reboot on Ubuntu Server 15.10, but not Ubuntu ...
0
votes
0answers
49 views

/etc/network/interfaces file order of precedence

Does the order of interfaces in /etc/network/interfaces define how the routing table is built? My proposed changes to a server's interfaces file are shown below. The server has 3 NICs attached to the ...
0
votes
0answers
79 views

Change maximum number of Virtual interfaces in Kernel

I am running Ubuntu server 14.04.3. I have smcroute installed - Version 0.95, Build 130523. When I attempt to start the daemon I get the error message: ERRO: addVIF, out of VIF space;, this happens ...
0
votes
0answers
28 views

Setting up PPP so VPN clients can access all subnets on the server

I have set up a simple PPTP using PPP on Ubuntu 14.04 using these [1] directions. I have an extra requirement that I don't see addressed in any Google searches I have made, however, and that is: My ...
0
votes
0answers
26 views

ip rule problem

i have a weird problem with policy based routing in rule 0, there is some lines appearing and disappearing constantly. below, the output of the command (ip rule list | grep "0:") executed several time ...
0
votes
0answers
26 views

Expose my home computers by HOSTNAME with BIND9 and DynDNS?

I would like to access my home computers, by name, from the public internet. I have a DynDNS address madeup.dyndns.org that points to my home router at 12.34.56.78. From work, I can reach my home ...
0
votes
0answers
126 views

Help with routing traffic between a gre tunnel interface to an ethernet interface

Here's my setup: I have 3 ethernet interfaces and a gre interface. I want all traffic coming in from my gre interface to be routed out one of the ethernet interfaces (eth0). Eth1 is a management ...
0
votes
0answers
30 views

IPV6 routing packets from eth0 to another interface

I have a device with an Ethernet connection and a wireless connection. I have an apache server on the device and a wireless stack that communicates with ipv6 wireless devices My wireless stack uses ...
0
votes
0answers
39 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 ...
0
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0answers
19 views

Redirecting data from GPRS modem to LAN

I have an application which sends the data using the GPRS modem for a server. Now, we have changed the network configuration and we want to send the data through Ethernet/LAN. How can I redirect data ...
0
votes
0answers
26 views

Remote code execution on linux computer connected to router

I am new to using the routing tables on linux, but it seems like routers are actually able to change what the routing tables are in a computer. Why can't this ability to insert a value into a computer ...
0
votes
0answers
32 views

Routing within Linux while connected via VPNC

I have a trouble, when i connect to A vpn server at that time my VPNC client machine is not locally available within the Local Network and VPNC client machine is only accessible within the Same WLAN ...
0
votes
0answers
23 views

How to disable “return routability procedure” in mip6d?

I am using mip6d on ubuntu 12.04 with kernel 3.8.2. When I change the IP address (CoA) of Mobile Node, the Mobile Node before sending a update message to CN, sends Care of Test init and wait for CN's ...