Ubuntu:Edgy/Networking

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Networking

How to configure Google Talk

How to activate/deactivate network connections

  • Read #General Notes
  • System -> Administration -> Networking
  • Network settings
Connections Tab -> Select "Ethernet connection" -> Activate/Deactivate

How to configure network connections

  • Read #General Notes
  • System -> Administration -> Networking
  • Network settings
Connections Tab -> Select "Ethernet connection" -> Properties
Connection -> Enable this connection (Checked)
Connection Settings -> Configuration: Select "DHCP/Static IP address"
DNS Tab -> DNS Servers -> Add/Delete

How to configure dialup connections

sudo pppconfig
  • To connect dialup
sudo pon provider_name
  • To disconnect dialup
sudo poff

How to configure broadband connections

sudo pppoeconf

How to change computer name

  • Read #General Notes
  • System -> Administration -> Networking
  • Network settings
General Tab -> Host Settings -> Hostname: Specify the computer name 
  • Save and close all opened applications, Reboot computer
  • Non Graphical bash shell solution.
  • at shell prompt edit the hostname file
 sudo nano /etc/hostname 
  • change the computer name listed in this file. Then run the following command to update your computer.
 sudo /etc/init.d/hostname.sh

How to change computer descriptions

sudo cp /etc/samba/smb.conf /etc/samba/smb.conf_backup
gksudo gedit /etc/samba/smb.conf
  • Find this line
...
  server string = %h server (Samba, Ubuntu)
...
  • Replace with the following line
  server string = new_computer_descriptions
  • Save the edited file
sudo testparm
sudo /etc/init.d/samba restart

How to change computer Domain/Workgroup

sudo cp /etc/samba/smb.conf /etc/samba/smb.conf_backup
sudo gedit /etc/samba/smb.conf
  • Find this line
...
  workgroup = MSHOME
...
  • Replace with the following line
  workgroup = new_domain_or_workgroup
  • Save the edited file
sudo testparm
sudo /etc/init.d/samba restart

How to assign Hostname to local machine with dynamic IP using free DynDNS service

sudo apt-get install ipcheck
gksudo gedit /etc/ppp/ip-up.d/dyndns_update
  • Insert the following lines into the new file
 #!/bin/sh

 USERNAME=myusername
 PASSWORD=mypassword
 HOSTNAME=myhostname.dyndns.org

 cd /root/
 if [ -f /root/ipcheck.dat ]; then
  ipcheck -r checkip.dyndns.org:8245 $USERNAME $PASSWORD $HOSTNAME
 else
  ipcheck --makedat -r checkip.dyndns.org:8245 $USERNAME $PASSWORD $HOSTNAME
 fi
  • Save the edited file
sudo chmod 700 /etc/ppp/ip-up.d/dyndns_update
sudo sh /etc/ppp/ip-up.d/dyndns_update

How to share folders the easy way

Right click on folder -> Share folder
Shared folder -> Share with: Select "SMB"
Share properties -> Name: Specify the share name

How to browse network computers

e.g. Assumed that network connections have been configured properly
If computers or network folders could not be found, try access them directly
Read #How to access network folders without mounting
  • Places -> Network Servers

How to access network folders without mounting

e.g. Assumed that network connections have been configured properly
Network computer's IP: 192.168.0.1
Shared folder's name: linux
  • Press 'Alt+F2' (Run Application...) and enter:
smb://192.168.0.1/linux

How to mount/unmount network folders manually, and allow all users to read

e.g. Assumed that network connections have been configured properly
Network computer's IP: 192.168.0.1
Network computer's Username: myusername
Network computer's Password: mypassword
Shared folder's name: linux
Local mount folder: /media/sharename
  • To mount network folder
sudo mkdir /media/sharename
sudo mount //192.168.0.1/linux /media/sharename/ -o username=myusername,password=mypassword
  • To unmount network folder
sudo umount /media/sharename/

How to mount/unmount network folders manually, and allow all users to read/write

e.g. Assumed that network connections have been configured properly
Network computer's IP: 192.168.0.1
Network computer's Username: myusername
Network computer's Password: mypassword
Shared folder's name: linux
Local mount folder: /media/sharename
  • To mount network folder
sudo mkdir /media/sharename
sudo mount //192.168.0.1/linux /media/sharename/ -o username=myusername,password=mypassword,dmask=777,fmask=777
  • To unmount network folder
sudo umount /media/sharename/

How to mount network folders on boot-up, and allow all users to read

e.g. Assumed that network connections have been configured properly
Network computer's IP: 192.168.0.1
Network computer's Username: myusername
Network computer's Password: mypassword
Shared folder's name: linux
Local mount folder: /media/sharename
sudo mkdir /media/sharename
gksudo gedit /root/.smbcredentials
  • Insert the following lines into the new file
username=myusername
password=mypassword 
  • Save the edited file
sudo chmod 700 /root/.smbcredentials
sudo cp /etc/fstab /etc/fstab_backup
gksudo gedit /etc/fstab
  • Append the following line at the end of file
//192.168.0.1/linux    /media/sharename smbfs  credentials=/root/.smbcredentials    0    0

How to mount network folders on boot-up, and allow all users to read/write

e.g. Assumed that network connections have been configured properly
Network computer's IP: 192.168.0.1
Network computer's Username: myusername
Network computer's Password: mypassword
Shared folder's name: linux
Local mount folder: /media/sharename
sudo mkdir /media/sharename
gksudo gedit /root/.smbcredentials
  • Insert the following lines into the new file
username=myusername
password=mypassword
  • Save the edited file
sudo chmod 700 /root/.smbcredentials
sudo cp /etc/fstab /etc/fstab_backup
gksudo gedit /etc/fstab
  • Append the following line at the end of file
//192.168.0.1/linux    /media/sharename smbfs  credentials=/root/.smbcredentials,dmask=777,fmask=777  0    0

How to get ipw2200 and wpa to work

How to get ipw3945 and wep/wpa to work

See the daemon source and the Intel ipw3945 project page.

OR

  • Install the daemon using apt (recommended for new users):
sudo apt-get install linux-restricted-modules-generic
reboot your system and you should have wireless internet/network.

How to Configure and start PPTP tunnels (VPN)

OR
  • Install manually
wget -c http://linux.edu.lv/uploads/content/pptp.tar.gz
tar zxvf pptp.tar.gz
cd ./pptp/
sudo sh ./pptp/install
cd ..
  • To configure PPTP Client
gksudo gedit /usr/share/applications/pptpconfig.desktop
  • Replace content of this file with the following lines
[Desktop Entry]
Name=PPTP Client
Comment=Configure and start PPTP tunnels (VPN)
Categories=Application;Network
Encoding=UTF-8
Exec=gksudo pptpconfig
Icon=gnome-remote-desktop.png
StartupNotify=true
Terminal=false
Type=Application
  • The above lines change the default file in three ways: the application is placed in the Application/Internet category, gksudo will make the application run as superuser and we put a nice icon that appears in the menu.
  • Start the client with Applications -> Internet -> PPTP Client


EDIT You can use a different Method if you use NetworkManager

  • Configure VPN with Network Manager
sudo apt-get install network-manager-pptp

You have to restart after install.

To setup a VPN Click the NetworkManager Icon in the tray VPN Connections->Configure VPN Use the defaults and be sure to check the box: Refuse EAP under the Authentication tab. To get my connection to work I also had to check Require MPPE Encryption under Compression & Encryption

How to Configure Ubuntu/Kubuntu with WPA using Network-Manager

Ubuntu Dapper in typical cases can configure WPA to work out of the box with minimal hassle. You'll need to install network-manager.


For Ubuntu:

sudo apt-get install network-manager-gnome

For Kubuntu (will install knetworkmanager):

sudo apt-get install network-manager-kde

Logout/Reboot.

Ubuntu users should now see the NetworkManager Applet in the Gnome notification area. Kubuntu users will probably have to run knetworkmanager before they see NetworkManager in the systray.

If instead, you get a "The NetworkManager applet could not find some required resources. It cannot continue." message, then:

sudo gtk-update-icon-cache -f /usr/share/icons/hicolor

Once Network-Manager is installed, click on the NM icon in the notification area (default is at the top right of Ubuntu/Gnome). Choose your network, then enter your passphrase. Type a password for the keyring, and you're set.

If you don't see your network, click "Create New Wireless Network...", type your essid/networkname, then choose "WPA Personal" for wireless security.

  • Note: If you installed Kubuntu then installed ubuntu-desktop & network-manager-gnome, you may not be able to use network-manager in Gnome, if at all. In this case, you may have to use WPA Supplicant and do some manual editing of conf files to get WPA up and running.
  • Note: When you first log into Gnome/KDE, the keyring application will ask for a password. Future revisions of Network-Manager should resolve this.

How to setup a GPG key with Seahorse and Evolution

apt-get install seahorse
  • Applications > Accessories > Passwords and Encryption Keys
  • Key > Create New Key
  • Select "PGP Key", then fill out information. Ensure that you use your real email address.
  • Wait for key to finish generating.
  • You may now right-click on the key entry to export, sync or publish your key.
  • Evolution should now hopefully see the key transparently.
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