Install WireShark on Ubuntu Linux

WireShark is an invaluable tool in recording and reviewing network traffic, it was previously known as Ethereal and is available for a variety of platforms.

Installation can sometimes be hard to remember as use by non-superusers requires additional configuration in Linux.

  1. Add the repository and install:

    sudo add-apt-repository ppa:wireshark-dev/stable

    sudo apt-get update

    sudo apt-get install wireshark

  2. During installation, the following will appear, chose "Yes" for most instances.

    Should non-super users be able to capture packets - Yes / No?

  3. If you need to change the value you selected, you can always re-run the following:

    dpkg-reconfigure wireshark-common

  4. Add the user to the wireshark group so that they can capture traffic:

    add user to group:
    sudo usermod -a -G wireshark username
    id username

  5. If you need additional information, you can always RTFM:

    sudo vi /usr/share/doc/wireshark-common/README.Debian.


Free Router Firmware Upgrades

I’ve been using an old Linksys WRT-54G (version 2.0) for years, while Linksys released a few firmware updates over the years, none of them really added any new functionality. Thankfully, they had released the source code to the open-source community and several excellent releases have been made available.

Additions such as real-time monitoring/graphing, boosting wireless transmitter power, QoS (Quality of Service) and WOL (Wake-on-LAN) have been added making the router and network much more useful and valuable.

The most prominent versions are:

NOTE: There are several branches on both of these, you can read more at their respective websites.

I was easily able to update from the Linksys firmware (4.21.1) to Tomato 1.25 in only a few minutes, it was even capable of saving my existing configuration making the transition that much easier!

Happy Networking