Whether you're running Linux, Windows, Cisco, Sun, or other DNS servers, you are at risk from a newly discovered vulnerability. So says Dan Kaminsky, head of penetration testing research at IO Active, who accidently discovered the DNS "design flaw" earlier this year.
Steganos Locknote is a handy little GPL-licensed utility for Windows, built using the Crypto++ class library. It is designed to keep text files secure, so you can store your sensitive information and passwords without having to worry about the information falling into the wrong hands.
Goran Fransson, a Swedish developer and entrepreneur, has given a deposition in the Barracuda-Trend Micro case that appears to seriously undermine Trend Micro's patent on gateway virus scanning.
The traditional file permission model, where read, write, and execute permissions are set on each file for the user, group, and others (UGO) has one drawback: It can't be used to define per-user or per-group permissions. For that, you need to employ access control lists (ACL). Eiciel is a graphical tool that integrates with the Nautilus file manager and allows for easy ACL management.
In the field of penetration testing, BackTrack is today's premier Linux distribution. Designed for, created by, and used by security professionals around the globe, BackTrack is the result of a merger between two earlier, competing distributions -- WHAX and Auditor Security Collection. The most recent beta version was released on June 10.
It's unusual for companies engaged in patent litigation to comment on how the fight is going. But Barracuda Networks CEO Dean Drako has openly sought FOSS community support for his company's defense again a Trend Micro lawsuit that, while filed against his company, is really about ClamAV. We've written about this before, as have others. In this video, however, we'll let Dean tell you in his own words what's going on -- and why.
Protecting servers by placing them behind a firewall is a best-practice methodology for systems administrators, but it's not a panacea: those systems are still visible to network scanners such as nmap and nessus. While services like SMTP and HTTP may need to be accessible to the public, most enterprises also have private internal servers that require external access by traveling support staff. For those users, fwknop, an open source utility that provides single packet authorization, can help sysadmins hide their servers from network nasties.
Well-known security researcher H. D. Moore, creator of the MetaSploit Project, has posted his findings on the recently discovered Debian-packaged OpenSSL bug. Moore documents the cause of the bug and explains how easily attackers can create every possible key the flawed OpenSSL implementation can generate.
gpgdir uses GNU Privacy Guard (GnuPG) to encrypt and decrypt files or a directory tree. You could accomplish the same objective by tarring the filesystem up and then encrypting the tar.gz file with GnuPG, but then you would still have to shred or wipe every file in the original directory tree. With gpgdir the whole tree is encrypted in one command.
Baker College of Flint, Mich., defeated defending champion Texas A&M University and four other regional winners from across the country to capture the third annual National Collegiate Cyber Defense Competition, which concluded in San Antonio, Texas, over the weekend. Texas A&M finished a close second, and the University of Louisville took third. Also competing for the championship were the Community College of Baltimore County, Mount San Antonio College of Los Angeles County, and the Rochester Institute of Technology.
At this year's CanSecWest conference, would-be crackers could try their skills on three separate laptops: One running OS X, one running Ubuntu, and one running Vista. At the end of the three-day security conference in Vancouver, Canada, last week, both the Mac OS X Leopard and Vista machines had been cracked, leaving only the Ubuntu box uncompromised.
Last month the TrueCrypt Foundation released TrueCrypt 5.0, which finally introduces a Linux GUI for the cross-platform encryption application. TrueCrypt 5.0's numerous other enhancements include a Mac OS X port, XTS operation mode, the ability to encrypt a system partition or drive under Windows, and the addition of the SHA-512 hash algorithm.
Cryptmount allows you to encrypt both your filesystems and swap space. An encrypted filesystem can be stored on a block device like a normal filesystem -- for example, using /dev/sda2 -- or inside a normal file in another filesystem. This later method is especially handy when you would like to work with an encrypted filesystem without changing your partition tables or working with the Logical Volume Manager (LVM). Cryptmount can also encrypt your swap space so that information from an encrypted filesystem is not inadvertently made less secure by the Linux kernel swapping a process out to disk.
December's release of Nmap 4.50 marked the popular port-scanning tool's tenth anniversary. The 4.50 release includes Zenmap, a cross-platform GUI front end for Nmap which includes a command creation wizard, a scripting engine, and a host of other improvements. Zenmap makes it easier than ever to use Nmap.
The rsync utility is smart enough to send only enough bytes of a changed file to a remote system to enable the remote file to become identical to the local file. When that information is sensitive, using rsync over SSH protects files while in transit.To protect the files when they are on the server you might first encrypt them with GPG. But the manner in which GPG encrypts slightly changed files foils rsync's efficiency.rsyncrypto allows you to encrypt your files while still allowing you to leverage the speed of rsync.
One of the main reasons people move from Windows to Linux is the promise of greater security from malware on the Internet. Everyone knows you need to add extra security to try to keep a Windows desktop safe, but what do you have to do to accomplish the same thing on Linux? To answer that question, we asked a number of well-known Linux kernel hackers and a security expert for their thoughts on the matter.
According to a press release issued earlier this month by Finjan, a security research firm, compromised Web servers are infecting thousands of visitors daily with malware that turns their Windows machines into unwitting bots to do the bidding of an as yet unidentified criminal organization. Security firms ScanSafe and SecureWorks have since added their own takes on the situation, though with varying estimates on the number of sites affected. All reports thus far say the compromised servers are running Linux and Apache.
Laptop and notebooks are being stolen at an ever-increasing rate. In 2004, Safeware Insurance which sells computer insurance, estimated 600,000 laptop and notebooks a year were being stolen. In 2006 an estimated 750,000 were being swiped, according to Absolute Software a company that makes computer tracking products -- and does not support Linux. LoJack For Laptops, another computer tracing company -- which also does not support Linux -- says FBI statistics show 2 million laptop and notebook computers were stolen in the US in a recent year. While the figures may not agree in detail, they all show that laptop and notebook theft is a major problem -- and if you're not careful, your Linux laptop might be next.
Developing secure applications has always been a difficult task. Software that manages critical functions once serviced only users on internal networks; today, applications run on Web servers accessible to users anywhere in the world. Not only have the scope and magnitude of Web applications increased, but so has the complexity of securing them. The Open Web Application Security Project (OWASP) comes to the rescue of Web application architects with tools, frameworks, and guidelines to improve security in applications.
PacketProtector is an embedded Linux distribution based on OpenWRT, the first popular distribution designed to run on a number of wireless routers commonly found in SOHO settings. Like X-Wrt, which we reviewed earlier this year, PacketProtector extends OpenWrt by offering additional functionality to enhance network security right out of the box.