Setting up a second IP address or Virtual IP addressPay attention when you're asked which network card is used for your. For example: ifconfig -a eth0 Link encap:Ethernet HWaddr 00:19:d1:18:ba:a9 inet addr:192.168.1.12 Bcast:192.168.1.255 Mask:255.255.255.0 In order to find the MAC address of the Ethernet device, you must type ifconfig -a and look up the relevant info. Finding MAC Address: On Ubuntu Linux systems, the ethernet device is typically called eth0.On the right, Share your connection from: will be Wi-Fi (or Ethernet if you have a wired connection). To find the MAC address on your Windows computer: Click on the Start menu in the bottom-left corner of your computer.Click Internet Connection on the left, but don’t check the box yet. Configure laptops for multiple locationsA MAC (Media Access Control) address is a unique ID assigned to every internet-connected machine that allows it to be identified when connected to a specific network. If you do not have access to router admin interface (via telnet or webbased gui), use the following method to find out router MAC address. It is a unique identifier attached to almost most all networking equipment such as Routers, Ethernet cards, Switches/Hubs and other devices.
You can configure your network client hosts with the command line by using commands to change your current settings or by editing a number of system files. Map your physical interfaces to logical interfacesYou can configure a network interface from the command line. However, I personally use -sL. Read the warning and then click Start.When I need to locate the IPs of devices by their mac address on a Windows system, I normally use Advanced IP Scanner (from radmin.com) to scan the network.5 answers Top answer: You can use the Ping scans, which start with the P-flag. Now, check the box next to Internet Connection on the left to enable it. The interface name of cards for different vendors may be different, which is why this step is needed.This will list the interface names for all NICs on your computer. You can add hostname and IP addresses to the file /etc/hosts for static lookups.When setting up your network you will need to know the network interface cards on your computer. To circumvent this you need to add the new name to the hosts file prior to setting the hostname and remove it once that action has succeeded.When your system boots it will automatically read the hostname from the file /etc/hostname. This is because sudo requires DNS lookups in certain cases and it cannot resolve your newly set hostname. Cleanmymac disk cleaner macConnect via a regular UTP cable to your router, and assuming you have DHCP enabled do the following:This will bring your eth0 up by using DHCP. Thus if the first command above does not stop Network Manager, try this.We will use eth0 in this example, your interface can be named differently, see Finding your network interface.If you have disabled the either wicd or the network manager you probably don't have a network connection anymore. Be aware that the rest of this guide will require packages which need to be installed from the online repositories.# Start: sudo /etc/init.d/NetworkManager start# Reverse: sudo chmod +x /etc/init.d/NetworkManagerSudo update-rc.d -f NetworkManager remove# Reverse: sudo update-rc.d -f NetworkManager defaults 50# Reverse: sudo aptitude install network-manager# Reverse: sudo chmod +x /etc/init.d/wicd# Reverse: sudo update-rc.d -f wicd defaults 20Note: At some point Ubuntu started using upstart instead of the /sbin/init/ daemon. To counter this, disable the startup script of either application or completely remove the packages. Cummins calterm iii keygen idmThis however is only needed if connections seem to hang otherwise (with the default of 1500).To cause your machine to consult with a particular server for name lookups you simply add their addresses to /etc/resolv.conf.For example a machine which should perform lookups from the DNS server at IP address 192.168.1.1 would have a resolv.conf file looking like this sudo vi /etc/resolv.confWe will not use un-encrypted wireless connections, but will make use of WEP/WPA/WPA2. Sudo /etc/init.d/networking restartSetting up a second IP address or Virtual IP addressIf you need to set up a second ip address you need to edit the /etc/network/interfaces.For these new settings to take effect you need to restart networking services using the following command sudo /etc/init.d/networking restartYou can set the MTU for an interface, you could do this by using the mtu keyword in the interface file or by using the ip link command.The above example sets the MTU for device eth0 to 1492, the usual MTU for a PPPoE ISP connection. Sudo vi /etc/network/interfacesFor these settings to take effect you need to restart your networking services. To configure a interface permanently you'll need to edit the interfaces file, /etc/network/interfaces. This is where the interfaces file comes in handy. And your IP should be in the same range as the router is.Sudo ip addr add 192.168.1.14/24 dev eth0Sudo ip route add default via 192.168.1.1These commands configure your interface but these changes will not survive a reboot, since the information is not stored anyhwere. Find The Address For Ubuntu Without Internet Drivers Fo YourThere are also post-up and pre-down commands. The post-down command is run after the interface goes down. If your card is not supported out of the box, you may need to use ndiswrapper, which will require the Windows drivers fo your card.* Install a Windows driver with ndiswrapper for Dapper or ndiswrapper for 8.04 and up# Ubuntu 8.04 and up (Hardy/Intrepid/Jaunty/Karmic)Sudo aptitude install ndiswrapper-utils-1.9Sudo ndiswrapper -i /path/to/windows/driver.infSudo ndiswrapper -m More information about ndiswrapperIn the examples I will use wlan0 as your wireless card, this could be different on your machine! I will do the examples with a dynamic IP address (DHCP), the same principles applies to staticly configured IP's.Open the interfaces file sudo vi /etc/network/interfacesThe pre-up command is run before the interface goes up. If your network card is supported out of the box, then there are very little issues. We also assume the network SSID is being broadcast.Enabling wireless networking on your PC is pretty straight forward. This will save you lots of time and frustration.Install wpa_supplicant sudo aptitude install wpasupplicantYou probably have given your wireless network a name (the ESSID or SSID), in this example we will use ubuntuwifi for our wireless network, our password will be OpenSesame. Please see the wpa_supplicant website for more details. In this case we start wpa_supplicant before we enable the interface and we stop wpa_supplicant after we bring the interface down.Before proceeding any further, it might be worthwhile to check whether your Wi-Fi Card is supported.
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