MobilePC World

The free, open-source GNU/Linux operating system is getting better each year for desktop use, but it's been a major contender for server use since the late 1990s. With popularity, however, it has become profitable for thieves to break into Linux servers and use them for spamming, scams, and serving pornography, among other things. Here are some ways you can protect your server from such a fate. Steps Learn to use Linux from the shell (command line) . Every layer of software added on to make your system administration "easier" actually adds more methods for crackers to gain access to your machine and also reduces performance. All the further steps will assume your familiarity with using a shell. Using lsof or a similar tool, find out on which ports your computer is listening for connections : ns003:~# lsof -i COMMAND PID USER FD TYPE DEVICE SIZE NODE NAME named 17829 root 4u IPv6 12689530 UDP *:34327 named 17829 root 6u IPv4 12689531 UDP *:34329 named 17829 root 20u IPv4 1...

Wireshark is the world's foremost  network   protocol analyzer, and is the de facto (and often de jure) standard across many  industries and educational institutions. It is used for network troubleshooting, analysis,  software  and communications,protocol development, and education. You can interactively browse the capture data and view summary and detail information for each packet. Wireshark has several powerful features, including a rich display filter language and the ability to view the reconstructed stream of a TCP session. Wireshark was written by networking experts around the world, and is an example of the power of open source. It runs on  Windows ,  Linux ,  UNIX, and other platforms. Wireshark can read live data from Ethernet, Token-Ring, FDDI, serial (PPP and SLIP) (if the OS on which it's running allows Wireshark to do so), 802.11 wireless LAN (if the OS on which it's running allows Wireshark to do so) and ATM connections (if the OS o...

If you are in security, you might have heard of an  Intrusion Detection system , which is a device or mechanism that monitors  network  and/or system activities for malicious or unwanted behavior and can react, in real-time, to block or prevent those activities. There are a lot of professional IDS available for commercial use,but when it comes to being free as freedom, Snort is my favorite. Snort is is a very powerful tool  open source  IDS ( Intrusion detection system ) written by Martin Roesch & and is known to be one of the best IDS on the market even when compared to commercial IDS.Snort performs protocol analysis, content searching/matching, and is commonly used to actively block or passively detect a variety of attacks and probes, such as buffer overflows, stealth port scans, web application attacks, SMB probes, and OS fingerprinting attempts, amongst other features. Like  Wireshark ,Snort uses the libpcap library to capture packets. Snort can be ...

Many People feel unsecured while chatting on Skype in windows platform due to the FUD (Fully Undetectable Viruses) threat. Hence today in this tutorial i will tell you how you can run Skype in Linux Platform which is almost 98% secure from RAT and other malicious viruses. Here we Have two methods of installing Skype in Ubuntu Linux 1. Through Ubuntu Software Center 2. Manual Method  Skype Through Ubuntu Software Center  For this just  go to Ubuntu Software Center and in search type Skype , Ubuntu 11.10 Support Skype 2.0 Version for Linux. Click on install and in few minutes you are ready to use the Skype. Installing Skype Through Manual Method This is the easiest method to install from the command line. There are three commands that you must use to install Skype correctly. Open your terminal and copy paste this commands  sudo apt-get install libqt4-gui wget -c -O /tmp/skype.deb http://www.skype.com/go/getskype-linux-ubuntu sudo dpkg -i /tmp/skype.deb Now you can see ...