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8
votes
4answers
32k views

When a PC has both a wired and a wireless connection, how is information transferred?

My PC has two connections (wireless and wired) simultaneously. Both of them have an internet connection. In this situation, how does it connect to the internet? How do my LAN and WLAN interfaces know ...
4
votes
1answer
1k views

What traffic uses an interface bound route (RTF_IFSCOPE flag)?

I have a following up question to an question I found answered on unix.stackexchange.com (see link below). What is the difference between the following two routing table entries: default ...
3
votes
4answers
304 views

Three computers accessing internet but only two network interfaces showing in ´ifconfig´, why?

My gateway(router) is connected to DSL. The gateway connects to 1 wireless transceiver device. 2 fixed computers connect to the router. At the moment of me doing ifconfig 2 fixed computers were ...
3
votes
1answer
4k views

How can I ensure outbound traffic uses the same interface as that of inbound traffic in Linux?

I have a Linux box with two interfaces: one for data and the other for management purpose. If both are on the same network, I have a route added for both interfaces. Imagine the routing table is: ...
3
votes
2answers
807 views

Automatic failover of two internet connections Mac OS X

Is there any way to set up an automatic failover for internet connections within Mac OSX? Basically the main connection would be ethernet or wifi and if the main connection goes does, it would switch ...
3
votes
2answers
18k views

Use commandline to show disabled network interfaces in windows? (Mobile Broadband and Regular Connections)

There are a few ways you can list network interfaces via commandline. For example: netsh interface show interface netsh interface ip show interfaces ipconfig |findstr "adapter" For Mobile Broadband ...
2
votes
2answers
8k views

Restrict SSH to one interface

How can I restrict incoming SSH connection request to only one interface? I'm using Ubuntu Server 10.04 LST. I want to lock down access to SSH to only one interface because I use the server as a ...
2
votes
1answer
2k views

How to make tap interfaces persistent after reboot?

Some tasks requires having tap interfaces configured + assign ownership. So, I am doing it manually: sudo tuntap -u <username> sudo ifconfig tap0 up sudo ip a a 192.168.1.1/24 dev tap0 or ...
2
votes
1answer
696 views

routing a secondary IP-addr. of a different private network on the same interface

Typical home-networking xDSL setup on a TG782 router/gateway. Hosts on the local private network are allocated IP-addresses in the range of 192.168.1.0/24 and can get to WAN through the aforementioned ...
2
votes
2answers
1k views

List network interfaces on a Ubuntu machine

How can I get a list of the network interfaces on a Ubuntu machine including wired and wireless?
2
votes
2answers
200 views

Is it possible to use the interface on a remote machine which I can SSH into?

I can SSH into a machine which has a wifi adapter connected, with interface wlan0. Can I use its interface (wlan0) on my client machine ? As an example, if I want to run iwconfig (or any tool which ...
2
votes
2answers
1k views

Difference interface priority and metrics in windows

I would like to ask what exactly is the difference between the priority settings of network adapters in the advanced settings window of the adapter settings (adapters and bindings, like mentioned in ...
2
votes
1answer
357 views

Specific Network Interface

What I'd like to do is to force an instance of a browser to use a specific Network Interface. I've tried: http://www.r1ch.net/stuff/forcebindip/ and was less than successful - besides, I'd like to ...
2
votes
0answers
102 views

A Printer that has multiple MAC Addresses?

I have a Lexmark printer that for some reason shows multiple MAC addresses when its connected to a switch. Thats so weird. Anybody had the same problem? How can I solve it and how come it has ...
2
votes
0answers
487 views

ForceBindIP not binding (Alternatives to ForceBindIP)

I'm working on Win7 x64, and I can't get ForceBindIP to work. I know it's an outdated software, if you have suggestions for a replacement, I'll be really thankful. Issue: When I call ForceBindIP from ...
2
votes
1answer
1k views

setting up wifi for static ip on ubuntu 12.04

I want to setup dhcp and static IP I have 2 lan card, Ubuntu 12.04 and it is a laptop the wireless interface I want to give a static IP and lan to have a dynamic ip how should I go about making ...
2
votes
0answers
915 views

Wireless network interface ra0 does not start at boot

I recently installed USB Wireless Adapter based on Ralink RT5370 chip on my Ubuntu 10.04. Manufacturer drivers are installed properly and now I have ra0 wireless interface configured in ...
2
votes
1answer
303 views

Alternate traffic through multiple interfaces on Linux

I have a VPS with three IP's. I am trying to setup the network configuration to allow round robin usage of the three IP's for outgoing requests (downloads into VPS). How do I change the following ...
2
votes
1answer
93 views

Can WiFi repeaters cause interference?

I have a old Linksys router the I converted into a repeater using dd-wrt firmware. Its been running great but I'm just curious is it possible that it could be interfering with the main router?
1
vote
6answers
4k views

Sharing LAN between two buildings. What should I use?

I need to connect two buildings to share LAN and internet connection between them. They are 20m apart, but from the two end points I would need about 90m of cable. I know that the maximum of UTP is ...
1
vote
1answer
5k views

Do I need the broadcast and network values in etc/network/interfaces?

My ISP has given me two static IPs, and I was just configuring the etc/network/interfaces file and saw that I need netmask, gateway, address, broadcast and network values. I only have the first ...
1
vote
2answers
611 views

What does mask 0.0.0.0 mean when it's assigned to a network interface?

Suppose I use ifconfig or some similar command to setup my network interface, and I assign 0.0.0.0 to the mask parameter. Does it have a special meaning? What implications could this have?
1
vote
2answers
373 views

What does `ec` mean in `HWaddr ec`?

When I do ifconfig on my laptop I get HWaddr ec and than an address, this is next to eth0. Note that my IPv4 address only appears next to eth1 so I assume my laptop uses the eth1 network interface. I ...
1
vote
2answers
3k views

Set up Ubuntu server as router

I just installed Ubuntu 10.04 LTS server on a old desktop PC with a dual port network card I would like to use as router for my home network. How do I have to set up the interfaces so that the ...
1
vote
1answer
623 views

Does the physical interface name in Linux ever change?

When I see the man page for interfaces I see the below. Has anyone seen similar behavior, I had been using Ubuntu for some time and my net-books interface name has not changed for ever. The ifup ...
1
vote
1answer
905 views

What is the “Current message level”?

What is the "Current message level" of an interface that ethtool provides? E.g. ethtool eth1 [Other stuff] Current message level: 0x00000014 (20) What is the message level? What is message ...
1
vote
1answer
2k views

ifconfig ignores alias on IPv6

When I add an IPv4 address for the interface eth0:0 with ifconfig, it is created correctly: ifconfig eth0:0 add 192.168.10.10 This can be verified by ifconfig or "ip a". When I add an IPv6 address ...
1
vote
1answer
4k views

iptables trouble: nat with ip alias (virtual interface) not working

I'm setting up an Ubuntu 11.10 server to act as firewall for a network running several different SSL websites. The idea is fairly common: have all public IP's for each site aliased to the public ...
1
vote
3answers
1k views

Permanently down/disable network interface in opensuse

I have two wireless cards in my computer. One bad one that cant be removed and one good one the I actually want use. Opensuses network manage automatically loads both and switches between the other ...
1
vote
1answer
114 views

Clients from multiple subnets can't simultaneously connect to server

I have setup servers for several games in the past where either players from outside my local network could join, or players from within my local network could join, but not both at the same time. ...
1
vote
1answer
294 views

Disable IPV4 on one interface using CMD

How can i make the same ad unchecking box IPV4 on internet connection properties, but using CMD, netsh, or sth. what i can put in .bat file?
1
vote
1answer
797 views

What routes must be set (in Linux) to allow Internet access through given interface without setting it default?

I am trying to solve a task with routing and OpenVPN's configuration. After setting the connection, I don't want it to become defaut route to anything, but rather want to use its interface for this ...
1
vote
1answer
2k views

Debian: Routing Table and Two Interfaces

I've a Debian machine with this network scenario: eth0 - Internet Connection via local Router (172.20.1.x) ppp0 - Dial-up to a network without internet (10.x.x.x) I've set pppd so it won't add ...
1
vote
1answer
88 views

How are network interface statistics generated?

I was wondering how are the network interface statistics generated? Could someone point me out?
1
vote
2answers
631 views

How to create a virtual interface from a socks proxy?

I am wanting to create a network interface from a SOCKS 5 proxy on localhost. This will eventually be bridged with a wireless interface that I have which will be operating in AdHoc mode. This will ...
1
vote
1answer
3k views

Install Ubuntu, eth0 not detected?

I have installed Ubuntu laptop Toshiba Satellite L640?, and I had difficulty, that is how to enable network interfaces, eth0 was not detected when running ifconfig.
1
vote
0answers
70 views

Setting up a tap interface on linux

I'm using Scapy to learn how to craft packets however I seem to be getting some interference from the kernel when trying to do some specific operations. I have been given some advice to use a tap ...
1
vote
1answer
339 views

Only “lab” traffic over my Juniper VPN connection - all other traffic over normal Wifi/Ethernet?

How do I configure my Juniper VPN client to work like the Windows VPN client to not be the default gateway for all traffic?
1
vote
1answer
239 views

ubuntu setup network routing table

I have two interfaces: eth0 and wlan0. I want all traffic to go though wlan0 except for port 80 traffic that should go on eth0. Is there a way to setup the routing table so it does that? My current ...
1
vote
0answers
367 views

Bind process to network interface

I'm attempting to perform simultaneous bandwidth tests from a single machine using multiple network interfaces. None of the utilities I've found so far allow me to do this. The closest was iperf ...
1
vote
0answers
515 views

iproute nexthop not working - defining multiple default gateways

I have several point to point connections and I’d like to use all of them as default gateways. I saw this link which explains how to do this using load balancing by calling ip route with a next hop ...
1
vote
1answer
333 views

Virtual Interfaces Unable to send packages in DD-WRT WR741 v2

I'm using a TP-Link WR741ND v2, with the DD-WRT v24-sp2 (07/20/12) std. It has been working for the last 3 monthes, perfectly ok, but suddenly the virtual interfaces stopped sending packets. I ...
1
vote
1answer
632 views

Configuring two interfaces with netcfg in VM (VirtualBox)

I am using netcfg to configure two interfaces in my archlinux VM. In VirtualBox I have set two active interfaces. The first (eth0) is the NAT interface to provide the VM with Internet access. The ...
1
vote
1answer
1k views

Run script after all interfaces were up in Debian

In order to setup a load-balanced permanent routes in debian, according to this article, i have to run the following command ip route add default scope global \ nexthop via 10.100.0.254 dev eth0 ...
1
vote
1answer
498 views

Allow network interface configuration without root priviledges

I have second network interface and I want to allow non-root users to configure it (Ubuntu). Is it possible to do this with udev or setcap? What should I rather use and how?
1
vote
0answers
430 views

Windows 7 gadget or app that shows stats on multiple network interfaces?

I am looking for a Windows 7 gadget or app that I can leave on my desktop/sidebar. While there are many gadgets that will display network interface info (such as current IP, gateway, etc), what I ...
1
vote
2answers
664 views

How can I configure a network interface to be available to a VirtualBox guest and be unused by the host?

On a host system with two physical network interfaces, how can I designate one interface to be used only by a VirtualBox guest OS? Both host and guest are Ubuntu 10.10 running NetworkManager. ...
0
votes
1answer
70 views

Assigning a Public IP for RaspberryPi in local area wired network

We are trying to configure RaspberryPi with public IP (192.248.10.71) in local area wired network. This is the network configuration in /etc/network/interfaces, auto lo iface lo inet loopback ...
0
votes
2answers
454 views

Debian randomly changes IP adress

I have debian6, interfaces are set manually: eth0 Link encap:Ethernet HWaddr 40:61:86:7c:42:ed inet addr:192.168.3.238 Bcast:192.168.3.255 Mask:255.255.255.0 inet6 addr: ...
0
votes
1answer
386 views

What is creating the utun0 network interface on OSX? What is for? What is it exactly?

What is creating the utun0 network interface on OSX? What is it being used for? What is it exactly? The interface only appears after connecting to the Ethernet or turning on the Wi-Fi and goes away ...