Information Security

arping – Backtrack 5 – Information Gathering – Network Analysis – Identify Live Hosts – arping

The arping application is a simple command that will allow you to ping devices by hostname, IP address, or MAC address. The unfortunate part is that most device will not respond to the arp requests, which are directed broadcast ICMP echo requests, though there are some out there that do. I go into more detail below regarding pinging via MAC address by providing an example of the typical output, example output when a MAC address responds to the ICMP echo requests, and details about how to configure hosts to respond to these ICMP echo requests. I also show a couple of the switches available with arping and provide examples of using arping to ping devices by IP and host.

Technology Insights

Authenticate Linux To Active Directory On Windows – Centrify Express

I was working with a coworker today to setup a new Redmine server running on top of Ubunut 12.04 and one of the steps we completed in the process was setting up LDAP authentication in Redmine. Setting up LDAP authentication in Redmine requires the server running Redmine to be joined to the Windows Active Directory domain so I needed a quick way to auth Linux on Active Directory. I have used Centrify in the past and remember it being really easy to setup authentication from any form of Linux to a Windows domain and again it did not disappoint. Follow the directions below to join a Linux server to Active Directory using Centrify.

Technology Errors

A Runtime Error has occurred. Do you wish to Debug? – Internet Explorer 5 – Windows 2000 SP2

I have been working with some older versions of Windows 2000 lately including Windows 2000 SP2 or Service Pack 2. On this version of Windows 2000 SP2 the version of Internet Explorer or IE is 5.00.3315.1000 which is completely outdated. I doubt that many others will be running into Runtime Errors however it is possible even in more current versions of Internet Explorer though the setting that resolves this issue is enabled by default so unless you have modified the settings you should not run into this issue. Below we describe the error in more detail and how to easily change a single settings to fix the problem.

Technology Insights

Terminal Initialization Failure Using OSX Terminal Window

Earlier while trying to SSH to a device from a Terminal windows on my Macbook Pro running OSX version 10.8, also known as Mountain Lion, I received an error when attempting to connect to a 64 Bit Windows 7 Professional server. The error in the Mac Terminal window stated that the terminal failed to initialize. After troubleshooting I realized that the Windows 7 Pro server, which is running WinSSHD as an SSH server, didn’t like the default terminal emulation that the Terminal window, which is xterm-color256, in OSX Mountain Lion uses. Below we describe the error message in more detail and how to resolve this issue within the Terminal window itself or by installing iTerm2.

Information Security

smbclient : Backtrack 5: Non Menu Items: CLI Commands: smbclient

The smbclient command line application included in Backtrack Linux is a staple for pentesting. I would imagine anyone that has done a pentest has used it to quickly verify SMB (Server Message Block) or CIFS (Common Internet File System) shares. The smbclient manpage describes it as a FTP-like client to access SMB/CIFS resources on servers. Below we describe varios smbclient commands in details to provide a basic understanding of its capabilities and what output will look like when using this tool in Backtrack Linux.