I often get really quite mad ideas on writing twitter bots, But I often get pretty bored of doing all of the boiler plate that is required when wanting to achieve these things.
The typical process to making a twitter bot
Almost twenty years ago, I began my career in networking. HP hubs and routers, no VLANs, one router PHY port per subnet. From there I installed an ATM backbone using LANE in the venerable Catalyst 5500 platform, then moved on to GigE in 3750 stacks and finally to 10G Nexuses (Nexa, Nexi?). I’ve seen WiFi […]
The post Farewell to Networking appeared first on Packet Pushers Podcast and was written by Matthew Mengel.
That’s right, it’s time for another surveillance-free, EFF-approved episode of Healthy Paranoia! Where the passwords are salted and the packets are always encrypted. This episode is hosted by the infamous Mrs. Y, queen of metadata and official privacy advocate for Healthy Paranoia, and recorded in the NSA-proofed SCIF with Grecs, of Novainfosec.com and Shmoocon Firetalks. […]
The post Healthy Paranoia Show 21: Windows Forensics with Andrew Case appeared first on Packet Pushers Podcast and was written by Mrs. Y.
While setting up my OpenDaylight OVSDB and Devstack following the awesome instructions from Kyle Mestery, I thought it would be fun to run the latest OVS from source on my compute nodes...
While setting up my OpenDaylight OVSDB and Devstack following the awesome instructions from Kyle Mestery, I thought it would be fun to run the latest OVS from source on my compute nodes...
To do this, execute the following commands on one of your compute nodes
before running stack.sh
sudo apt-get -y --force-yes install build-essential devscripts
gcc dkms make automake autoconf debhelper libssl-dev
pkg-config python-all python-qt4 python-zopeinterface
python-twisted-conch gdebi-core dh-autoreconf hardening-wrapper
libtool graphviz ipsec-tools module-assistant python-twisted-web
racoon git
git clone git://git.openvswitch.org/openvswitch
cd openvswitch
./boot.sh
dpkg-buildpackage -b -us -uc -nc
cd ..
Once you’ve built the .deb’s you can copy these to your other compute
nodes using scp:
scp *.deb ubuntu@devstack-compute2:
Replace ubuntu with your username and devstack-compute2 with the
name or IP address of your other compute nodes.
Finally we can install the packages as follows:
sudo dpkg -i *.deb
At the time of writing this will build Open vSwitch 2.1.90. You can check the version as follows:
sudo ovs-vsctl --version
Which will give the following output
ovs-vsctl (Open vSwitch) 2.1.90
Compiled Jan 16 2014 15:18:45
Huge thanks to @FlorianOtel for his help with Devstack!
@dave_tucker
There is a lot of news surrounding Net Neutrality, and potential repercussions of decisions made by courts, and some players out there that want to grab as much cash as they can, and claim it is in the best interest of their customers.
Netflix is just an example people love citing because it is bandwidth intensive, yet is not the entire story itself. Take a moment and understand how the Internet is pieced together. The Internet is a mass of interconnections between networks. These interconnections happen basically 1 of 3 ways:
transit: network A pays network B to reach every other network that isn’t A or B. Good networks usually get multiple transits for failover, and/or alternate paths to those other networks. You can buy multiple ports for bonding to increase capacity, etc. Average transit price without a Service Level Agreement (SLA, guaranteed connectivity or you can yell at us a lot and we credit you) is around $1-2/mbit, and with a SLA can hit upwards of $10/mbit. These are current avg. prices when buying 10G at a time of connectivity/capacity right now.
peering (settlement free, or “free”): Network A spends a bunch of money to get into popular Continue reading
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| Figure 1: Marking large flows |
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| Figure 2: Large flow marking controller results |
ping -f 10.0.0.238 -s 1400Figure 2 shows the results, the left half of the chart shows traffic when the controller is disabled and the right half shows traffic when the controller is enabled. The blue line trends the largest unmarked flow seen in the network and the gold line shows the largest marked flow. When controller is disabled, none of the traffic is marked. When the controller is enabled, sFlow-RT detects the large flow Continue reading
While setting up my OpenDaylight OVSDB and Devstack following the awesome instructions from Kyle Mestery, I thought it would be fun to run the latest OVS from source on my compute nodes...
Last week I was at a Cisco users group meeting where some sales engineers were giving a presentation on the new Application Centric Infrastructure (ACI) architecture and Nexus 9000 products. It was a very high-level overview, but it was interesting. I had assumed when Cisco made the ACI announcement that it would be based on […]
The post Cisco ACI – Speculation of its Inner Workings appeared first on Packet Pushers Podcast and was written by Eric Flores.
