Mininet on CentOS 7 KVM

Mininet is a Linux-based network emulator which enables the prototyping, development and sharing of OpenFlow and Software-Defined Networking (SDN) networks. Given the growing importance of these networking technologies, Mininet has potential as a teaching tool in the IT lab.  This post describes how to get Mininet running in KVM on CentOS 7, and introduces some basic commands and workflows.

Continue reading “Mininet on CentOS 7 KVM”

Zabbix and ICTNWK403

The unit ICTNWK403 Manage network and data integrity covers a mixed bag of skills and knowledge around the “development of asset protection processes, determining threats and implementing controls to mitigate risk“: in other words, keeping the show on the road.¬†Topics range from the management of user accounts, file permissions, assets and backups to handling environmental and virus/malware threats and deploying network monitoring systems.

Continue reading “Zabbix and ICTNWK403”

Mininet SDN teaching tool

Mininet is a Linux-based network emulator which enables the creation of a realistic virtual network, running real kernel, switch and application code, on a single machine (VM, cloud or native), in seconds, with a single command. It is a great way to develop, share, prototype, research, teach and experiment with OpenFlow and Software-Defined Networking systems.

Continue reading “Mininet SDN teaching tool”

Advanced open source networking resources

gearsIt is no secret that most corporate and industrial computing resources in the world today have now been migrated from physical infrastructure to a combination of public, private and hybrid cloud environments. A similar trend is now under way in the networking space, with network control logic shifting from proprietary hardware-based platforms to open source software-based platforms (SDN or Software Defined Networking).

Continue reading “Advanced open source networking resources”

CentOS 7 firewalld NAT router

gearsThis post outlines how to build a simple router using firewalld and dnsmasq on CentOS 7.3. The problem this router solves for us at SuniTAFE is that it isolates virtual networks being built or used by students on VMWare ESX hosts from the main college network, while still allowing student access to the college network for DNS forwarding and internet access purposes.

Continue reading “CentOS 7 firewalld NAT router”