![]() Then I realised (new to Ubuntu,old to linux) that this is not enough and I had to remove network-manager alltogether in order to start using ifup/down etc. # clone mac address so we can get in net as instructed by IT So what I did was to edit /etc/network/interfaces to become: auto lo When I leave the 'cloned MAC address' box empty then it connects fine, I see the connect icon OK but I am unable to access the internet (either via command line with wget or firefox) because i am not authenticated (i think they have a proxy or something, wget respondes with "proxysg1.Authorization failed') It keeps trying to connect and never manages with all the notifications coming. Using this method no VPN is necessary so no VPN is configured, just a plain ethernet connection. Therefore when creating a wired connection over ethernet (using NetworkManager - this is for Ubuntu 12.04 and 13.04), we are supposed to fill the box 'cloned MAC address' with the said fake MAC address given to us (MTU size is 'auto'). ![]() unfortunately i am the only one with linux here, the windows have cisco nac agent). each desktop computer is given a 'fake'/'cloned' MAC address which is recognised by our network and let us in without further authentication/VPN and the likes (don't ask why - stoped asking that myself.
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