== Understanding the lokkit Firewall Customization Screen ==
 
== Understanding the lokkit Firewall Customization Screen ==
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The lokkit customization screen needs a little explanation. The first settings list the network devices present in the system and provides the option to set one or more of these as being trusted devices. Essentially data coming via a trusted device is not subject to any rules imposed by the firewall. This is useful if you have a system where one network device is connected to the outside world via an internet connection and another device is connected to a trusted, internal network. Assuming you truly trust the internal network and all the systems on it, then you can mark that device as being trusted.  
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The text based lokkit customization screen needs a little explanation. The first settings list the network devices present in the system and provides the option to set one or more of these as being trusted devices. Essentially data coming via a trusted device is not subject to any rules imposed by the firewall. This is useful if you have a system where one network device is connected to the outside world via an internet connection and another device is connected to a trusted, internal network. Assuming you truly trust the internal network and all the systems on it, then you can mark that device as being trusted.  
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The second section of the screen controls access to a number of different services which may or may not be running on your Ubuntu Linux system. Descriptions of these are as follows:
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The second section of the screen controls access to a number of different services which may or may not be running on your Ubuntu system. Descriptions of these are as follows:
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