Closing open ports and services on Linux

It is important to close any unneeded open ports. To view a list of running services you can execute the following command: chkconfig –list | grep on To disable a running service you can execute the command: chkconfig service name off Then you should stop this service from running by executing: /etc/init.d/service stop

BackTrack 3 Final Tools

Information Gathering0trace 0.01 – tool enables the user to perform hop enumeration (“traceroute”) within an established TCP connection, such as a HTTP or SMTP session. This is opposed to sending stray packets, as traceroute-type tools usually do. The important benefit of using an established connection and matching TCP packets to send a TTL-based probe is […]

Difference Between Mailbox and Public Folders on Microsoft Exchange

Exchange public folders are exactly what they sounds like – folders that are available to multiple users. A mailbox is a storage area made up of a number of folders that is normally designed for use by a single user. It contains a number of features such as Inbox, Calendar, Contacts, etc. Additonally. . . […]

Network Sniffers for Linux

Linux network sniffers Ethereal: A Network Protocol Analyzer  Experts in the networking community to add enhancements. It runs on all popular computing platforms, including Unix, Linux, and Windows. TCPdump  Great tool, for capturing packets with Linux computers, working as sniffers. sniffdet – Remote Sniffer Detector for Linux  Sniffdet implements various tests for the detection of machines running in promiscuous mode […]

Ctl+ Key Combinations

Alt+Ctrl+C – Copyright symbol Alt+Ctrl+Period – An ellipsis Alt+Ctrl+R – Registered trademark symbol Alt+Ctrl+T – Trademark symbol Ctrl+B – Bold text Ctrl+E – Centers a paragraph Ctrl+Enter – Inserts a page break Ctrl+F – Opens the Find menu Ctrl+H – Opens the Replace menu Ctrl+I – Italics text Ctrl+N – Creates a new document Ctrl+P – Prints a document Ctrl+Shift+F – Changes the font Ctrl+Shift+P – Changes the font size Ctrl+U – Underline text Ctrl+W – Closes a document Ctrl+Y – Redo the last action