Posts Tagged “ARP”

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.

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Xplico is a NFAT or Network Forensics Analysis Tool that is designed to either capture traffic in real time sessions or to provide an interface to upload PCAP (Packet Capture Data) files for analysis. The current version in Backtrack Linux 5 release 3 is 0.7 however the latest Xplico version is Xplico 1.0.1. I believe there are some dependencies required in the later versions of Xplico so I will write an updated article once Backtrack 6 comes up and the latest version of Xplico can easily be installed.

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I was working on a presentation this morning and as I was writing I realized I did not have a quick fast way to make a list of all the internal Ips on a LAN (Local Area network). Many of the tools I use including nmap, nessus and nexpose will accept a list of ips so  I decided to whip up a quick dirty shell script to get the job done.  I may clean it up in the future but for now it does its job. This is meant to work on Backtrack 4 but in its current state it will work on any Debian based distro. As always with any code found on the internet you use this at your own risk. Also I am sure this can be done better but like I said it was a 10 minute fix.

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I recently had some issues with my printer not working on my home network and during the troubleshooting process I wanted to remove the printer port so I could reinstall the printer all together. The issues ended up being stupidity on my part for adding a temporary device on my network that had the same IP address of the printer so I was able to easily get that resolved once I figured it out by checking the MAC address associated to the IP in question using ARP. I did want to share how I was able to forcefully remove the printer port in Windows 7. These instructions will not only work for Windows 7 but will also work for other Windows versions including Windows Vista and Windows XP. Follow the instructions below to forcefully remove a printer port.

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The easiest way to configure a static IP on the HP Photosmart C5100 is via the web interface. You probably do not know to the IP address of the all-in-one printer since you are just now configuring the static IP and if it is currently on the netork then it has received a dynamic IP address via DHCP (Dynamic Host Configuration Protocol). Regardless its an easy process which I will explain step by step below.

  1. Locate IP Address: First we will need to locate the current Internet Protocol address of the printer. Look in the properties of the printer and look at the Ports tab to see if there is an IP address specified. If there is not then you can print a test page, bring up a command prompt, and type “arp -a”. You should notice a couple different IP addresses of which one should be associated with a Physical Address that begins with 00:19:BB which is Hewlett Packard. Once you have located the IP address take note. It should be an address where the first three octets begin with 192.168.0.
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