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Citrix and NSX integration to build departmental isolation between VDI desktops.
In this blog, I am going to focus on XenDesktop, NetScaler and NSX interoperability. I will discuss a field use case, see how to implement that in VMware NSX for XenDesktop and then look at a few micro-segmentation deployment scenarios, to showcase how XenDesktop and NetScaler in conjunction with NSX provides a compelling deployment model.
The ability to isolate and control desktops represents a major security and integrity enhancement. Using a Netscaler provides a single point of access into the data centre and can be integrated into the NSX overlay.
Adding NetScaler in this deployment would simplify the set up and allow the users of all the airlines (or tenants) access the same landing URL and still have complete isolation from each other’s data and resources.
Observation: NSX is an automation tool for connectivity between end points and offers isolation/segmentation as service. Added to Netscaler, we get orchestration to produce greater business benefits because the XenDesktop & NSX becomes a unified service.
No specific provisioning to make this happen. Thats an SDN outcome.
XenDesktop and XenApp Interoperability with VMware NSX | Citrix Blogs
The Cisco ASA FW has a simple and robust failover mechanism. It works so well that sometimes an administrator may not realize that the load has moved from the primary device to the secondary device. When connecting to the IP address, the primary IP address for the interface follows the active unit. So it is even possible to be logged in to a different Firewall than the administrator thinks they are in.
This can easily be determined by doing a show failover. In the output, it is easy to see if the unit is the Primary or Secondary (configured state) and Active or Standby (operational state). Since the ASA Failover is not preemptive, any glitch moving the load to standby will result in the load remaining there (unless there is a subsequent failure or manual failback).
Given the fact that I am a huge fan of situational awareness, I like to reflect the state in the CLI prompt. This is a simple configuration change.
asav-1# asav-1# conf t asav-1(config)# prompt hostname priority state asav-1/pri/act(config)# exit asav-1/pri/act#
As can be seen above, a simple configuration change results in the ASA displaying its hostname, configured priority and operational state.
In the consumer world you will likely encounter networking devices that don’t have a easy way to poll for their network stats, or in some cases you hate <abbr style=“border-bottom: 1px dotted green;” title=“S
Over the past few years, a new tradition has emerged, the Holiday DDoS Attack.
I see a lot of ASA designs and they are typically flanked with switches. One of the reasons for this is that the failover requirements typically dictate that the devices to be layer 2 adjacent in each security zone. There is obviously the requirement to be L3 directly connected to their next hop. The result of this requirement that an ASA can’t typically be directly connected directly to an L3 only device and it is often the case that a switch is sandwiched between the FW and the next L3 device.
This article is meant to outline a possible work around with IOS and IOS-XE based routers to provide the L2 two adjacency using inherit L2 features. Readers may use these sample configurations to build out there own labs and more fully validate the applicability the their environment.
TL;DR–BDI and BVI allow ASA A/S to function properly in my testing.
Below is the topology that used for validating this. In a real world scenario it is less likely that routers would be the connection point on all interfaces. The reason I positioned them here is to demonstrate both IOS and IOS-XE techniques in the same lab.
The writing masses in addition to professional media generate tons of articles each week. What’s the best way to keep up? My strategy is multi-pronged.
Filter quickly and mercilessly. Read only the most interesting articles.
Keeping up with technology is a big part of my business. Therefore, I subscribe to feeds about emerging tech from news organizations, independent tech writers, and technology vendors. From these sources, I monitor trends and hype, picking out what strikes me as useful or at least thought-provoking for IT practitioners. Articles that match this criteria inspire articles of my own as well as podcast scripts, and spawn research projects. My overarching goal is Continue reading
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The company is suffering from supply threats and lags in 4G sales.
The partnership marks Ruckus’ first step towards IoT.