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8
votes
5answers
41k 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 ...
6
votes
2answers
34k 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 ...
5
votes
1answer
6k 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 ...
4
votes
0answers
132 views

Why do different users get different IP via the same interface

On the same server, on root, I am getting the correct internet ip of the interface root@server:~# curl -s --interface ppp0 ipcheck.com 111.111.111.111root@server:~# However... If it's not super ...
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
3answers
279 views

Testing 10G Ethernet with two NICs?

I would like to test 10Gig Ethernet serial interface by installing two NICs(Network Interface Cards) on a pc and pinging. I have the following questions: 1- Can two separate NICs be installed in one ...
3
votes
4answers
339 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
2answers
11k 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 ...
3
votes
1answer
5k 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
974 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
1answer
2k 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?
3
votes
0answers
705 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
2answers
378 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
2k 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?
2
votes
2answers
166 views

Use two network interfaces simultaneously

I often use Wi-Fi from some public networks which don't allow some protocols (like torrent or IRC - next I will only speak about IRC). If I want to use one of those protocols, I have to use my phone ...
2
votes
1answer
6k 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 three,...
2
votes
1answer
862 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
1answer
797 views

Run only specific /etc/network/if-up.d-script for specific interfaces

I would like to run a network script when bringing up a specific interface (e.g. eth0) by invoking ifup eth0 The script should ONLY run when bringing up eth0. My approach was to write the script (...
2
votes
1answer
3k 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 ...
2
votes
1answer
501 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?
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
398 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
122 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
1answer
2k 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
1k 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 /etc/network/...
2
votes
1answer
342 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
0answers
443 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
6answers
6k 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
2answers
481 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
4k 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
669 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
2k 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
5k 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
293 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
3answers
10k views

How to find out total NIC cards and total available physical ports in linux

I need to find out how many total physical ports my server has, and how many of them are in use and how many free. Can you kindly help how to find it: This is what i find from dmidecode output: #...
1
vote
1answer
933 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
99 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
980 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
22 views

What does “Current message level: 0x00000033 (51)” mean?

There is a similar question here What is the "Current message level"? Reference linked in the answer there doesn't mention this 0x00000033 (51) value. Here is the complete output of ...
1
vote
0answers
12 views

lsof: restrict to sockets available via loopback

I can restrict the selection to sockets listening only on the loopback interface: $ lsof -p "$(pgrep -d, proga)" -i4TCP@127.0.0.1 -sTCP:LISTEN -P -n -a COMMAND PID USER FD TYPE DEVICE SIZE/OFF ...
1
vote
1answer
151 views

Can i see my bluetooth connection as network interface in linux?

I have 2 laptops. i have paired them succesfully with each other via bluetooth, so i can exchange files between each other. Both of my laptops have linux installed. when i run the ifconfig command to ...
1
vote
1answer
22 views

Run ethtool after boot

I'm running lmde 2, and My net card doesn't seem to be able to work with my modem unless I set it to work with 10 mbps. Currently I'm using the command: sudo ethtool -s eth0 speed 10 duplex full ...
1
vote
0answers
62 views

Ubuntu Network Interfaces Configuration: 2 Network Cards

Sorry for broad and ambiguous title. The case is: I have 2 Network Cards, eth0 and eth1. OS: Ubuntu: 14.04. eth0 is configured with static address: 10.1.1.1 and provides WIFI, DHCP and DNS services ...
1
vote
0answers
80 views

How to find the IP address of the interface connected to the Internet on a Cisco device?

I have to subnet the Class B network of 128.0.0.0. I have already done the subnetting, but when writing out the interface IP addresses, I have no idea what that is for the router's interface ...
1
vote
1answer
664 views

Public static IP address for LXC container

I have a server running Ubuntu 14 (server edition), connected to a network using two network adapters. These two network adapters are configured in a bond to have network redundancy (in case one of ...