Nmap ("Network Mapper") is a free open source utility for network exploration or security auditing. It was designed to rapidly scan large networks, although it works fine against single hosts. Nmap uses raw IP packets in novel ways to determine what hosts are available on the network, what services (application name and version) those hosts are offering, what operating systems (and OS versions) they are running, what type of packet filters/firewalls are in use, and dozens of other characteristics. Nmap runs on most types of computers and both console and graphical versions are available. Nmap is free and open source. . The link for this article located at Darknet.org.uk is no longer available. . The link for this article located at Darknet.org.uk is no longer available.. ('network, mapper'), source, utility, network, exploration, security, auditing. . Benjamin D. Thomas
Via has released a free, open source utility that renders deleted Linux, Win2k, and WinCE files "virtually unrecoverable," it says. The PadLock Tru-Delete utility is available as binary or source, and is intended to show off the random number generator in newer Via processors. . . .. Via has released a free, open source utility that renders deleted Linux, Win2k, and WinCE files "virtually unrecoverable," it says. The PadLock Tru-Delete utility is available as binary or source, and is intended to show off the random number generator in newer Via processors. Like the special Xine media player build released several weeks ago by Via, and the Zip Utility released yesterday, Tru-Delete is designed to show off the capabilities of Via hardware, and provide developers with coding examples that can be used in derivative works. The utility will run on x86 processors that do not have the PadLock RNG, but will run 50 percent slower and use more system resources, Via says. The link for this article located at LinuxDevices.com is no longer available. . Via has released a free, open source utility that renders deleted Linux, Win2k, and WinCE files 'vir. released, source, utility, renders, deleted, linux, win2k, wince, files. . LinuxSecurity.com Team
Network security administrators sometimes need to be able to abort TCP/IP connections routed over their firewalls on demand. This would allow them to terminate connections such as SSH tunnels or VPNs left in place by employees over night, abort hacker attacks . . . . Network security administrators sometimes need to be able to abort TCP/IP connections routed over their firewalls on demand. This would allow them to terminate connections such as SSH tunnels or VPNs left in place by employees over night, abort hacker attacks when they are detected, stop high bandwidth consuming downloads - etc. There are many potential applications. This article describes how a Linux IPTables based firewall/router can be used to send the right combination of TCP/IP packets to both ends of a connection to cause them to abort the conversation. It describes the steps required to perform this task, and introduces a new open-source utility called "cutter" that automates the process. The use of linux systems as IP network firewalls and routers is becoming increasingly popular. The cheapness of the software and hardware combine with the flexibility and reliability of Linux's networking support to make such a solution highly attractive. It is often possible to deliver routing and fire walling facilities at a fraction of the cost associated with systems provided by industrial heavy-weights such as Cisco, Nortel and others. The link for this article located at ChrisLowth is no longer available. . Sysadmins can now manage TCP/IP sessions on Linux gateways with the new release of Cutter 1.02, enhancing their oversight capabilities.. TCP/IP Management, Firewall Control, Open Source Tools, Network Protection. . Anthony Pell
Get the latest Linux and open source security news straight to your inbox.