Network monitoring software Nagios is quick to install and straightforward to configure –but a waste of a full PC. Raspberry Pi to the rescue.

Free software - Wikipedia. Free software, freedom- respecting software, or software libre. While this right is often called 'access to source code', the Free Software Foundation recommends to avoid using the word 'access' in this context. This right is only conditional on the person actually having a copy of the software, i. The FSF's Free Software Definition. Freeware (green) seldom expose their source code. Software that is not covered by copyright law, such as software in the public domain, is free if the source code is in the public domain, or otherwise available without restrictions.

Proprietary software, including freeware, use restrictive software licences or EULAs and usually do not provide access to the source code. Users are thus prevented from changing the software, and this results in the user relying on the publisher to provide updates, help, and support. This situation is called vendor lock- in. Users often may not reverse engineer, modify, or redistribute proprietary software. Organizations of users and suppliers, for example, SHARE, were formed to facilitate exchange of software. As software was often written in an interpreted language such as BASIC, the source code was distributed to use a software. Software was also shared and distributed as printed source code (Type- in program) in computer magazines (like Creative Computing, Soft.

How To Install Iperf On Linux Machines Incorporation

• What is Syncthing?¶ Syncthing is an application that lets you synchronize your files across multiple devices. This means the creation, modification or deletion of.
• Mininet Walkthrough This walkthrough demonstrates most Mininet commands, as well as its typical usage in concert with the Wireshark dissector.

Side, Compute!, Byte etc) and books, like the bestseller BASIC Computer Games. In United States vs. IBM, filed January 1. In the 1. 97. 0s and early 1. In 1. 98. 0, copyright law was extended to computer programs. In 1. 98. 3, Richard Stallman, one of the original authors of the popular Emacs program and a longtime member of the hacker community at the MIT Artificial Intelligence Laboratory, announced the GNU project, the purpose of which was to produce a completely non- proprietary Unix- compatible operating system, saying that he had become frustrated with the shift in climate surrounding the computer world and its users.

In his initial declaration of the project and its purpose, he specifically cited as a motivation his opposition to being asked to agree to non- disclosure agreements and restrictive licenses which prohibited the free sharing of potentially profitable in- development software, a prohibition directly contrary to the traditional hacker ethic. Software development for the GNU operating system began in January 1. Free Software Foundation (FSF) was founded in October 1. He developed a free software definition and the concept of . Some non- software industries are beginning to use techniques similar to those used in free software development for their research and development process; scientists, for example, are looking towards more open development processes, and hardware such as microchips are beginning to be developed with specifications released under copyleft licenses (see the Open. Cores project, for instance).

Creative Commons and the free culture movement have also been largely influenced by the free software movement. Foundation of the GNU project. An article outlining the project and its goals was published in March 1. GNU Manifesto. The manifesto included significant explanation of the GNU philosophy, Free Software Definition and .

The first licence was a proprietary software licence. However, with version 0.

February 1. 99. 2, he relicensed the project under the GNU General Public License. Free. BSD and Net. BSD (both derived from 3.

BSD) were released as free software when the USL v. BSDi lawsuit was settled out of court in 1. Open. BSDforked from Net. BSD in 1. 99. 5. Also in 1. The Apache HTTP Server, commonly referred to as Apache, was released under the Apache License 1.

The FSF recommends using the term . The FSF also notes that .

Left: free software, right: proprietary software, encircled: Gratis software. The first formal definition of free software was published by FSF in February 1. To summarize this into a remark distinguishing libre (freedom) software from gratis (zero price) software, the Free Software Foundation says: . To understand the concept, you should think of 'free' as in 'free speech', not as in 'free beer'. The most notable are Debian Free Software Guidelines published in 1.

Users of these systems generally find the same set of software to be acceptable, but sometimes see copyleft as restrictive. They generally advocate permissive free software licenses, which allow others to use the software as they wish, without being legally forced to provide the source code.

Their view is that this permissive approach is more free. The Kerberos, X1. Ozeki Ng Sms Gateway Keygen Software on this page. Apache software licenses are substantially similar in intent and implementation. Examples. Some of the best- known examples include the Linux kernel, the BSD and Linux operating systems, the GNU Compiler Collection and C library; the My. SQL relational database; the Apache web server; and the Sendmail mail transport agent.

Other influential examples include the Emacs text editor; the GIMP raster drawing and image editor; the X Window System graphical- display system; the Libre. Office office suite; and the Te. X and La. Te. X typesetting systems. Licensing. However, unless the applications' licenses are compatible, combining programs by mixing source code or directly linking binaries is problematic, because of license technicalities. Programs indirectly connected together may avoid this problem. The majority of free software falls under a small set of licenses. The most popular of these licenses are.

So it's possible for a license to be free and not in the FSF list. The OSI list only lists licenses that have been submitted, considered and approved. All open- source licenses must meet the Open Source Definition in order to be officially recognized as open source software. Free software on the other hand is a more informal classification that does not rely on official recognition. Nevertheless, software licensed under licenses that do not meet the Free Software Definition cannot rightly be considered free software. Debian doesn't publish a list of approved licenses, so its judgments have to be tracked by checking what software they have allowed into their software archives. That is summarized at the Debian web site.

Since public- domain software lacks copyright protection, it may be freely incorporated into any work, whether proprietary or free. The FSF recommends the CC0 public domain dedication for this purpose. In this sense, a permissive license provides an incentive to create non- free software, by reducing the cost of developing restricted software. Since this is incompatible with the spirit of software freedom, many people consider permissive licenses to be less free than copyleft licenses. Copyleft licenses, with the GNU General Public License being the most prominent: the author retains copyright and permits redistribution under the restriction that all such redistribution is licensed under the same license. Additions and modifications by others must also be licensed under the same .

This is also known as a viral, protective, or reciprocal license. Due to the restriction on distribution not everyone considers this type of license to be free.

A popular quantitative test in computer security is to use relative counting of known unpatched security flaws. Generally, users of this method advise avoiding products that lack fixes for known security flaws, at least until a fix is available. Free software advocates strongly believe that this methodology is biased by counting more vulnerabilities for the free software, since its source code is accessible and its community is more forthcoming about what problems exist. As users can analyse and trace the source code, many more people with no commercial constraints can inspect the code and find bugs and loopholes than a corporation would find practicable. According to Richard Stallman, user access to the source code makes deploying free software with undesirable hidden spyware functionality far more difficult than for proprietary software.

It's a client server arrangement in that you run it in server mode at one end and connect to its from another computer on the other side of the network. One both machines run: sudo apt- get install iperf. We'll start an iperf server on one of the machines: iperf - s. And then on the other computer, tell iperf to connect as a client: iperf - c < address of other computer>.

On the client machine, you'll see something like this: oli@bert: ~$ iperf - c tim. Client connecting to tim, TCP port 5. TCP window size: 1. KByte (default). - -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -. On the server machine: nc - vvlnp 1.

And the client can pipe a gigabyte of zeros through dd over the nc tunnel. M count=1. K ! If you're unhappy with that you could wrap the whole thing up in a time call. Remember that the result is in megabytes so multiply it by 8 to get a megabits- per- second speed.

The demo above is running at 9.