CCIE/CCDE Party and CCIE/CCDE NetVet Reception
It amazes em that in just a few more weeks it will be time for Cisco Live 2017 to begin …
The post CCIE/CCDE Party and CCIE/CCDE NetVet Reception appeared first on Fryguy's Blog.
Troubleshooting Network Latency: 6 Tools
Learn how utilities like traceroute, SNMP, and NetFlow help track down sources of network performance problems.
Large Scale Network Design Video on Sale
The Large Scale Network Design video Alvaro and I recorded for Pearson is on sale as part of the Cisco Live preshow sale. This is a great video series. It might even keep you entertained until the new book is published (hopefully early next year).
The post Large Scale Network Design Video on Sale appeared first on rule 11 reader.
Tom Hollingsworth on Changes in the SD-WAN Market
Networking expert Tom Hollingsworth reflects on Cisco's acquisition of Viptela, what it means for the market, and whether it changes how enterprises evaluate SD-WAN options.
Enterprises Need ‘Security 101’ to Keep IoT Devices Safe
Almost half of US firms that use an IoT network have been hit by a security breach.
Want to Learn Something New? Learn Git!
If you'd come to me as a networking engineer and say “there's one new thing I want to learn that's outside of my $dayjob” I'd probably say “invest some serious time into learning Git (beyond memorizing the quick recipes) if you haven’t done that already”
Full disclosure: not so long ago I tried to avoid Git as much as possible… and then it suddenly clicked ;)
Read more ...Docker CE – Installing Test(“RC”) version
Starting with Docker 17.03, Docker introduced Community edition(CE) and Enterprise edition(CE) version of their Docker software. The release numbering also changed. From Docker 1.13.1, we jump to 17.03 version. Docker CE is the free version while Docker EE is the commercially supported enterprise version. Docker enterprise edition comes in different flavors based on the cost. … Continue reading Docker CE – Installing Test(“RC”) version
RPM Post-Upgrade Scripts
Something different today: Here’s something I learnt about RPM package management, and post-upgrade scripts. It turns out that they don’t work the way I thought they did. Post-uninstall commands are called on both uninstall and upgrade. For my own reference as much as anyone’s here some info about it, and how to deal with it.
RPM Package Management
RPM is a Linux package management system. It is a way of distributing and managing applications installed on Linux systems. Packages get distributed as .rpm files. These contain the application binaries, configuration files, and application metadata such as dependencies. They can also contain scripts to run pre- and post- installations, upgrades and removal.
Using package management systems is a vast improvement over distributing source code, or requiring users to manually copy files around and run scripts themselves.
There is some effort required to get the spec files used to create packages. But once it has been set up, it is easy to create new versions of packages, and distribute them to users. System administrators can easily check which version they’re running, check what new versions are available, and upgrade.
We use RPMs to distribute StackStorm packages for RHEL/CentOS systems. Similarly, we distribute Continue reading
RPM Post-Upgrade Scripts
Something different today: Here’s something I learnt about RPM package management, and post-upgrade scripts. It turns out that they don’t work the way I thought they did. Post-uninstall commands are called on both uninstall and upgrade. For my own reference as much as anyone’s here some info about it, and how to deal with it.
RPM Package Management
RPM is a Linux package management system. It is a way of distributing and managing applications installed on Linux systems. Packages get distributed as .rpm files. These contain the application binaries, configuration files, and application metadata such as dependencies. They can also contain scripts to run pre- and post- installations, upgrades and removal.
Using package management systems is a vast improvement over distributing source code, or requiring users to manually copy files around and run scripts themselves.
There is some effort required to get the spec files used to create packages. But once it has been set up, it is easy to create new versions of packages, and distribute them to users. System administrators can easily check which version they’re running, check what new versions are available, and upgrade.
We use RPMs to distribute StackStorm packages for RHEL/CentOS systems. Similarly, we distribute Continue reading
Sustainability in Armenia: ARMIX Adopts Solar Power
Given that within the coming years, another billion people are going come online along with billions more devices thanks to the Internet of things (IoT), we recognize that the community of Internet professionals and organizations cannot legitimately discuss access without addressing sustainability, especially as it relates to energy.
Michael Oghia
Worth Reading: Tracing down flashing dialogs
The post Worth Reading: Tracing down flashing dialogs appeared first on rule 11 reader.
VMware NSX and Check Point vSEC
One of the current challenges of data center security is the East-West traffic that has become so pervasive as modern applications communicate a great deal between their different components. Conventional perimeter security is poorly placed to secure these lateral flows, to promote a zero-trust model in order to prevent threats moving within each application layer. VMware NSX addresses this, providing virtual firewall at the virtual NIC of each VM with a management framework where micro-segmentation is achievable with a sensible level of overhead. Check Point vSEC can be deployed in conjunction to provide threat and malware protection.
The VMware NSX Distributed Firewall (DFW) protects East-West L2-L4 traffic within the virtual data center. The DFW operates in the vSphere kernel and provides a firewall at the NIC of every VM. This enables micro-segmented, zero-trust networking with dynamic security policy leveraging the vCenter knowledge of VMs and applications to build policy rather than using IP or MAC addresses that may change. Tools for automation and orchestration as well as a rich set of APIs for partner and customer extensibility complete the toolset for security without impossible management overhead. While this is a dramatic improvement in the security Continue reading
Show 343: Future Of Networking Q&A Live From Interop ITX
This show was recorded live at Interop ITX during the Packet Pushers' Future of Networking Summit. Greg and Ethan answer questions from a live audience on topics including the future of VARs, why engineers should be good storytellers & more. The post Show 343: Future Of Networking Q&A Live From Interop ITX appeared first on Packet Pushers.
