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Questions tagged [routing]

Use this tag when the topic is related to managing the paths that IP traffic will take. This includes subnets created by access points, and on the high end it could be multiple feeds coming through a Cisco unit.

Use this tag when the topic is related to managing the paths that IP traffic will take. This includes subnets created by access points, and on the high end it could be multiple feeds coming through a Cisco unit.

381 questions
82
votes
6 answers

How can I make VirtualBox guests share the host's VPN connection?

Question When I start my VPN on my ubuntu desktop computer which acts as a router, the attached subnet loses internet connectivity, but is still accessible (LAN). Ideally, I would like to know how to enable the attached subnet to re-gain internet…
Programster
  • 6,039
66
votes
10 answers

OpenVPN connecting but no internet access on Ubuntu 16.04 / 18.04 / 20.04

I'm trying to connect to a VPN using OpenVPN. I tried using network-manager with OpenVPN plugin and tried too in terminal with ovpn.conf file. Everything connects (it says connection established) in terminal, but no internet access. I can ping…
Shantanu Shady
  • 820
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61
votes
8 answers

How to set static routes in Ubuntu Server?

I have used Ubuntu since Ubuntu 8.10; today I'm working with Ubuntu 12.04 Server. I am having difficulty keeping static routes on booting. I would usually put the route commands /sbin/route add -net / dev in /etc/rc.local or…
Frank Allan
  • 611
58
votes
3 answers

How to make IP forwarding permanent?

I know that I can enable IP forward by echoing 1 to /proc/sys/net/ipv4/ip_forward, but how can I make this permanent? By the way I want another method rather than start up scripts, is there any?
Hojat Taheri
  • 5,539
32
votes
3 answers

Default gateway changing

I am using 3 ethernet interfaces on Ubuntu but when I restart, the default gateway is changing to a different interface. Each time I boot I have to change default gateway back to the eth1 by deleting the default gateway and adding it back with eth1.…
Baran
  • 453
29
votes
2 answers

How to set up dual wired and wireless connections?

My laptop has both wireless and a wired connection capabilities. Can I connect to a router A using wireless and a separate router B using wired ethernet at the same time without having to switch back and forth? Thanks for replying so quickly. I…
Col
  • 371
26
votes
4 answers

persist port routing from 80 to 8080

I use amazon EC2 instance which works via ubuntu. By default according security restrictions I can't bin my application to port 80, so I just bind it port 8080 and then set routing redirect from port 80 to 8080 via the following command: iptables -t…
Ph0en1x
  • 405
25
votes
5 answers

How to set routes for my vpn connection

In my previous question I was asking about setting up vpnc connection. I've installed network-manager-vpnc so now I can configure all this stuff right from network manager gui. I have got this pretty picture from related topic: So the question is…
fl00r
  • 1,383
25
votes
1 answer

Adding route on client using OpenVPN

So this is my setup. Laptop Running Ubuntu OpenVPN version 2.3.2 I connect to a OpenVPN server that connects to an off-site network. I get the OpenVPN client running and I can ping the VPN server. The server doesn't push any routes so I need to…
Jocke
  • 351
21
votes
1 answer

How to route all internet traffic through Tor (the onion router)?

Could you explain how to route all internet traffic through tor? I am using Ubuntu I really don't know how to do it. Actually I am using tor for twitter only, and I'm afraid of DNS leak. So I need to route everything through tor.
user178493
  • 211
16
votes
3 answers

How to toggle NetworkManager's "Use this connection only for resources on its network" option via command line

At my work we have some test machines that we run scripts on via ssh. During the test we want to only have the machines access the local network through their Ethernet connection, but then would like to have them be able to access the Internet…
user563202
14
votes
1 answer

Forwarding traffic between 2 interfaces

I have 2 VLANs connected to a 'router'. All the machines can ping other machines within their own VLAN and the router. The router can ping all of the machines. I am trying to get machines to talk to other VLAN via the router. On the router, the…
Konstantin Tarashchanskiy
  • 401
13
votes
2 answers

Set up permanent routing (Ubuntu 13.04)

I have 2 connections: wlan0 (gw: 192.168.1.1) and eth0 (gw: 192.168.2.1). My default connection is wlan0, but I wanted some websites load through my eth0, so I set up routing for those websites/IPs like this: route add -net 31.135.208.0/21 gw…
Azamat
  • 436
13
votes
2 answers

How to tell what interface a TCP connection will go out on?

I have a server with multiple ethernet interfaces. What's the easiest way to tell what interface an outgoing TCP connection will go out over? The results of "netstat -rn" is greek to me, so if your answer is "look at the local routing table",…
brooks94
  • 383
12
votes
5 answers

How to get rid of 169.254.0.0 route?

This is from route -n command. Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 0.0.0.0 192.168.1.x 0.0.0.0 UG 600 0 0 169.254.0.0 0.0.0.0 …
user633551
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