CCDE Bootcamp – This is an Online Cisco CCDE exam preparation training. Probably you all know the success of Orhan Ergun’s CCDE Bootcamps and how it has been helping so many engineer become a better network engineer/designer. If you don’t know, please just take a tour on the website. Check the Success Stories, Why Orhan and […]
The post April 2016 CCDE Bootcamp appeared first on Orhanergun.
From the IoT to regulatory issues, there's a lot of uncertainty ahead for wireless networking pros.
Outages cost enterprises $700 billion a year, according to IHS study.
Growing security threats and a data explosion are driving demand for skilled security professionals.
A few days ago Dell announced their next-generation network OS based on Debian Linux, and bloggers (like my good friend Tom Hollingsworth) started wondering what’s going to happen with Cumulus Linux.
Let’s get into prognostication mode…
On a totally unrelated note, I love the picture Dell marketing put on the OS10 page. Linux distro in a binder? Really? When was the last time they checked the calendar?
Read more ...A reader asked “What can I do if my boss won’t let me automate my tasks?” Sadly some people still have a fear of automating even common, well-understood tasks. They’re worried about automation run amok. They think it’s safer to have a human typing in commands. But you know better. Humans have a place. But that place is not executing the same sequence of steps, over and over.
You need to prepare for change. Continuing to do repetitive tasks manually does not have a future. Either your boss will have a change of heart, or you’re going to change jobs. You have to prepare yourself for either eventuality. Here’s some thoughts on what to do.
First option: Just do it. Don’t bother asking, just get on with automating things you do often. You should be doing this anyway.
Last year we heard the story of a Russian hacker that had taken automation a little further than usual, with gems such as:
- kumar-asshole.sh – scans the inbox for emails from “Kumar” (a DBA at our clients). Looks for keywords like “help”, “trouble”, “sorry” etc. If keywords are found – the script SSHes into the clients server and rolls back Continue reading
Big Switch offers on demand labs to get instant access to Big Cloud Fabric (BCF) and Big Monitoring Fabric (BMF). Using these labs, it’s quite easy to experience the products first hand and see what they are all about. The labs also come with lab guides that walk you through step-by-step on how to get started using BMF and BCF.
For me, one of the more appealing aspects of these labs is that Big Switch also exposes the APIs such that you can access them directly from your personal machine. This makes it possible to not only test the product, but also test the API on each controller platform (BMF and BCF).
The best part is, you don’t even need to use any docs because they offer a command that shows the API calls being made by certain show commands.
controller> debug rest
***** Enabled display rest mode *****
REST-SIMPLE: GET http://127.0.0.1:8080/api/v1/data/controller/core/controller/role
controller>
Like the output from a show version? Ensure debug rest is enabled, and then just issue the command to grab the APIs being called to generate the text output on the CLI.
controller> show version
REST-SIMPLE: GET http://127.0.0.1:8080/api/v1/data/controller/core/version/appliance
REST-SIMPLE: http://127.0. Continue readingThis is another post in the series of how to protect SSH keys with hardware, making them impossible to steal.
This means that you know that your piece of hardware (e.g. Yubikey or TPM inside your laptop) was actively involved in the transaction, and not, say, turned off and disconnected from the Internet at the time (like in a safe or on an airplane).
What’s new this time is that we can now have a physical presence test on every use of the key. That means that even if someone hacks your workstation completely and installs a keylogger to get your PIN, unless they also break into your home they can’t use the key even while the machine is on and connected. Evil hackers in another country are out of luck.
Most of this is a repeat of official docs (see references).
If it looks like a command is hanging, check to see if the Yubikey is flashing. If it is, then touch it.
The touch feature is optional. If you don’t want a key to require it, you can chose to generate a key that doesn’t.
sudo apt-get install help2man gengetopt libtool Continue readingIn this post, I’m going to show you how to use macvlan interfaces with Docker for networking. The use of macvlan interfaces presents an interesting networking configuration for Docker containers that may (depending on your use case) address issues with the standard Linux bridge configuration.
Macvlan interfaces, if you’re unfamiliar with them, are a (somewhat) recent addition to the Linux kernel that enables users to add multiple MAC address-based logical interfaces to a single physical interface. These logical interfaces must reside in the same broadcast domain as the associated physical interface, which means that Docker containers attached to macvlan interfaces also will be in the same broadcast domain as the associated physical interface. In other words, the Docker containers will be on the same network as the host—no IPTables rules, no Linux bridge, just attached directly to the host’s network. This introduces some interesting possibilities (and potential challenges), but I’ll save that discussion for a future post.
Right now, macvlan supported is implemented via an unsupported Docker Network plugin hosted on GitHub. However, I suspect that the macvlan functionality found in this plugin will find its way into the core of Docker Network, and probably sooner rather than later.
You’ll Continue reading
This is another post in the series of how to protect SSH keys with hardware, making them impossible to steal.
This means that you know that your piece of hardware (e.g. Yubikey or TPM inside your laptop) was actively involved in the transaction, and not, say, turned off and disconnected from the Internet at the time (like in a safe or on an airplane).
What’s new this time is that we can now have a physical presence test on every use of the key. That means that even if someone hacks your workstation completely and installs a keylogger to get your PIN, unless they also break into your home they can’t use the key even while the machine is on and connected. Evil hackers in another country are out of luck.
Most of this is a repeat of official docs (see references).
If it looks like a command is hanging, check to see if the Yubikey is flashing. If it is, then touch it.
The touch feature is optional. If you don’t want a key to require it, you can chose to generate a key that doesn’t.
sudo apt-get install help2man gengetopt libtool Continue readingBig Switch offers on demand labs to get instant access to Big Cloud Fabric (BCF) and Big Monitoring Fabric (BMF). Using these labs, it’s quite easy to experience the products first hand and see what they are all about. The labs also come with lab guides that walk you through step-by-step on how to get started using BMF and BCF.
For me, one of the more appealing aspects of these labs is that Big Switch also exposes the APIs such that you can access them directly from your personal machine. This makes it possible to not only test the product, but also test the API on each controller platform (BMF and BCF).
The best part is, you don’t even need to use any docs because they offer a command that shows the API calls being made by certain show commands.
controller> debug rest
***** Enabled display rest mode *****
REST-SIMPLE: GET http://127.0.0.1:8080/api/v1/data/controller/core/controller/role
controller>
Like the output from a show version? Ensure debug rest is enabled, and then just issue the command to grab the APIs being called to generate the text output on the CLI.
controller> show version
REST-SIMPLE: GET http://127.0.0.1:8080/api/v1/data/controller/core/version/appliance
REST-SIMPLE: http://127.0. Continue reading
No one product or market is at fault; Juniper just thinks Q1 will be stormy all 'round.
Operations teams are at the front lines of incident response. HyTrust CTO describes the challenges these teams face in the SDDC.
That darned macroeconomy has Juniper hedging its bets in its Q1 outlook.
Alright, so you’ve decided to branch out and you may be wondering what else you can do to help things along. You can always try your friendly neighborhood blog or message board, but there’s always the problem of whether or not you’re getting good information. You should also check to see if your company has […]
The post Make Like A Tree And Branch Out appeared first on Packet Pushers.
Alright, so you’ve decided to branch out and you may be wondering what else you can do to help things along. You can always try your friendly neighborhood blog or message board, but there’s always the problem of whether or not you’re getting good information. You should also check to see if your company has […]
The post Make Like A Tree And Branch Out appeared first on Packet Pushers.