This seems the same topic that has been
answered here.
Dynamic segmentation absolutely has a place where firewalls are deployed already. Tunneling the traffic to a gateway (or controller, which is the same thing) allows you to have micro-segmentation. Each device will have its own firewall segment which is role-based, where traditional firewalls protect per network segment which depending on how and where you deploy it can be large parts of your network where device-device communication (east-west traffic) is unprotected and unseen. Secondly, tunneling traffic allows you to use the existing network just as a carrier, which in many IoT and industrial scenarios allow a more centralized approach to break-out traffic for these devices fully isolated from your production network.
In the end, you might indeed end up in a situation where the added value of having a separate firewall is limited. This is where the
SD-Branch solution is designed for.
If you have firewalls deployed already and are happy with that, that is something that still many customers are doing.
The edge microsegment firewalling and perimeter firewalling in fact both complement each other, but you can consider some overlap as well.
Your Aruba partner or local Aruba SE can probably better put the different possibilities in place.
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Herman Robers
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If you have urgent issues, always contact your Aruba partner, distributor, or Aruba TAC Support. Check
https://www.arubanetworks.com/support-services/contact-support/ for how to contact Aruba TAC. Any opinions expressed here are solely my own and not necessarily that of Hewlett Packard Enterprise or Aruba Networks.
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Original Message:
Sent: Dec 14, 2020 02:11 PM
From: Anupam Gaur
Subject: Dynamic Segmentation
Hello ,
I have a query related to Dynamic Segmentation .
Can we achieve Dynamic Segmentation without Mobility controller .
Radius can provide Downloadable User Role to the Wired Switches or wireless AP. The GRE tunnel to Mobility controller kicks in if define Secondary user role .
If there is already a Firewall ( for example palo alto Stateful Next generation Firewall) , what is the advantage to have a Mobility controller ( PEF) ?
Having a Mobility controller , unknown traffic will be backhauled to controller via GRE tunnel but we can place unknown device to a Guest vlan also without Mobility controller ?
As Customer is planning to move to Aruba Central to manage all Wired Switches and APs-- the goal is get rid of controllers , what is the purpose of Mobility controller then - only PEF ?
Does PEF solution only for the environments where customer has no firewall solution ?
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AG
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