Security testing with hping
Firewalls and Session State
Suppose you want to determine how well your firewall is able to record requests for Microsoft protocols across the network. To use hping3 to generate the packets for this test, issue the following commands:
hping www.acme.net -S -c 1 -p 139 hping www.acme.net -S -A -c 1 -p 139 hping www.acme.net -S -A -c 1 -p 135
These commands generate packets that the firewall – if its capability for maintaining state is working – will record. To verify this, you'll need to check the firewall's logs and use a packet sniffer.
Christmas Tree Packet
A Christmas tree packet  is a TCP packet that has almost every flag set, which is useful for bypassing firewalls and for launching various other forms of attack.
To create a Christmas tree packet using hping3, issue the following command:
hping3 -F -P -U 10.44.45.15 -p 0
Firewalls and Time Stamps
In many cases, a firewall will automatically drop packets that don't have a time stamp. To add a time stamp to your packets, use the -timestamp option in your command:
hping3 -S 188.8.131.52 -p 80 --tcp-timestamp
The results will help you determine whether you need to enable timestamp filtering on the firewall.
Richard Stallman calls for the W3C to remain independent of vendor interests.
The new release supports nine architectures, 73 human languages, and zero non-Free components.
Fedora developers release the first alpha version of Fedora 19, known as Schrödinger’s Cat, for general testing. The final release is expected in July 2013.
ack is a grep-like, command-line tool that has been optimized for programmers to search large trees of source code.
New features in SUSE Studio 1.3 include enhanced cloud integration, VM platform support, and lifecycle management.
The Linux Foundation recently announced that the Xen Project is becoming a Linux Foundation Collaborative Project.
Open source version of LiveCode is now available for developing apps, games, and utilities for all major platforms.
OpenDaylight is an open source software-defined networking project committed to furthering adoption of SDN and accelerating innovation in a vendor-neutral and open environment.
The new Gnome release includes privacy and sharing settings, allowing more user control over access to personal information.
Mozilla is collaborating with Samsung on a new web browser engine called Servo.