Setting Linux Firewall

IPtbles is an administrator tool for filtering and configuring network. These options specify the desired action to perform. Only one of them can be specified on the command line unless otherwise stated below. For long versions of the command and option names, you need to use only enough letters to ensure that iptables can differentiate it from all other options.

-A, --append chain rule-specification

Append one or more rules to the end of the selected chain. When the source and/or destination names resolve to more than one address, a rule will be added for each possible address combination.

-D, --delete chain rule-specification

-D, --delete chain rulenum

Delete one or more rules from the selected chain. There are two versions of this command: the rule can be specified as a number in the chain (starting at 1 for the first rule) or a rule to match.

-I, --insert chain [rulenum] rule-specification

Insert one or more rules in the selected chain as the given rule number. So, if the rule number is 1, the rule or rules are inserted at the head of the chain. This is also the default if no rule number is specified.

-R, --replace chain rulenum rule-specification

Replace a rule in the selected chain. If the source and/or destination names resolve to multiple addresses, the command will fail. Rules are numbered starting at 1.

-L, --list [chain]

List all rules in the selected chain. If no chain is selected, all chains are listed. Like every other iptables 

command, it applies to the specified table (filter is the default), so NAT rules get listed by

iptables -t nat -n -L

Please note that it is often used with the -n option, in order to avoid long reverse DNS lookups. It is legal to specify the -Z (zero) option as well, in which case the chain(s) will be atomically listed and zeroed. The exact output is affected by the other arguments given. The exact rules are suppressed until you use

iptables -L -v 

exemple :

for drop packet to our ip :

iptables -D INPUT -s 127.0.0.1 -p icmp -j DROP

for allowing trafic to web or tcp :

   iptables -A INPUT -p tcp --dport 80 -j ACCEPT

for cheking our rules:

   iptables -L

for flasing our rules:

   iptables -F

GetGo Download Manager

Free Complete Online Video, Music and File Download Manager with Download Support. This Free Downloader is an Essential Internet Tool for Increasing Download Speed, Resuming, Scheduling, and Organizing Downloads. Easy to use, customizable modern interface allows you to Download All of your favorite videos, program, games, and music with extreme acceleration. With auto-resuming feature, you never have to waste your frustrations on unfinished downloads due to network problems, or unexpected power outages.

Highlights

IE & Firefox Integrated
Seamlessly integrated with IE and Firefox web browsers, GetGo can run in the background without interrupting your web browsing experience while downloading.

Easy Batch Download
You can easily set up a Batch Download that not only downloads a large list of files using an URL pattern template, but also automatically renames downloaded files using a filename pattern template.

Extreme Download Acceleration
GetGo accelerates download speed by splitting files into many blocks and then downloading them concurrently, which can result an increase in download speed up to 500%!

Flexible Download Scheduler
With GetGo's flexible download scheduler, you can schedule your downloads to start on timer or a specific date, and to download for a specific amount of time before stopping.

Resume Broken Downloads
GetGo resumes broken or stopped downloads, such that you won't need to restart your downloads from the beginning again, saving your time and bandwidth.

Wine windows software emulator

Wine is a free software application that aims to allow computer programs written for Microsoft Windows to run on Unix-like operating systems. Wine also provides a software library, known as Winelib, against which developers can compile Windows applications to help port them to Unix-like systems.

Wine is both an emulator and a compatibility layer. It duplicates functions of a Windows computer by providing alternative implementations of the DLLsthat Windows programs call, and a process to substitute for the Windows NT kernel. This method of duplication differs from other methods that might also be considered emulation, where Windows programs run in a virtual machine. Wine is predominantly written using black-box testing reverse-engineering, to avoid copyright issues.

The name Wine initially was an acronym for WINdows Emulator. Its meaning later shifted to the recursive backronym, Wine Is Not an Emulator in order to differentiate the software from other emulators. While the name sometimes appears in the forms WINE and wine, the project developers have agreed to standardize on the form Wine.

In a 2007 survey by desktoplinux.com of 38,500 Linux desktop users, 31.5% of respondents reported using Wine to run Windows applications. This plurality was larger than all x86 virtualization programs combined, as well as larger than the 27.9% who reported not running Windows applications.