34,333
edits
Changes
→Understanding the lokkit Firewall Customization Screen
'''DHCP''' - This refers to the Dynamic Host Configuration Protocol. This is a system by which devices are dynamically provided IP addresses instead of having static IP addresses manually assigned by users or system administrators. If you obtain your address from a DCHP server (such as one built into a wireless router or provided by your company) then you will want to enable DHCP on this page to enable your system to negotiate with the DHCP server to obtain an IP address.
'''SSH''' - The secure shell provides an encrypted mechanism for allowing password protected remote access to your system. With SSH you can remotely log into to your system, copy files to and from your system and anotehr system and perform remote execution of programs. If you need remote access to your system you will need to activate this. If you do not need remote access leave this disabled. Note that tyhe ssh server is not instalkled by default on Ubuntu Linux.
'''Telnet''' - Telnet provides remote terminal access to your system. It does not use encryption and use is strongly discouraged. Leave this disabled and use SSH instead fopr remote access.
'''WWW (HTTP)''' - If you are hosting a web serv eron your Ubuntu Linux System you will need to enable HTTP traffic through the firewall to enable web page requests to reach the http server. If you do not plan to host a web server leave this disabled. Note that the Apache web server is not installed by default on Ubuntu Linux.
'''mail (SMTP)''' - Specified whether the firewall block Simple Mail Transfer Protocol traffic. This is only necessary if you are hosting a mail server on your Ubuntu Linux system. If you only use a mail client to download email from a POP3 or IMAP server you can safely leave this disabled. Note that the SMTP server is not installed by default on Ubuntu Linux.
'''FTP''' - Controls whether File Transfer Protocol traffic is permitted through the firewall. Unless you plan to set up an ftp server (unlikely for typical users) leave this option disabled. Note that the FTP server is not installed by default on Ubuntu Linux.
To activate or deactivate a option use the ''Tab'' key to navigate to the required option and press the space bar to toggle the selection. Activated options are marked with an asterisk (*).
