Looking for a recommendation for Azure "internal Load balancer" when using PA redundant Firewalls

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Looking for a recommendation for Azure "internal Load balancer" when using PA redundant Firewalls

L0 Member

Hi,  I have deployed redundant PA Firewalls with the internal Azure load balancer to provide resiliance - thos is working however the "internal load balancer has significant limitations.


I am looking to see if anyone has any recommendations for 3rd party load balancer (taking into account cost and operation in this environment)


The limitations of the free Azure load balancer are as far as I can see

a.  a limitation of a maximum 250 ports

b. no support for port ranges - therefore each port to be foirwarded bust be statically defined


Any pointers/recommendations would be greatly appreciated






L3 Networker

Due to the nature of Azure networking, another loadbalancer won't probably fix this problem.
When using another LB solution and making this HA, you probably going to need a Azure Internal LB.

See this reference documentation: https://docs.microsoft.com/en-us/azure/architecture/reference-architectures/dmz/nva-ha


I created a feature request at MS, you can upvote.


A (dirty) work-around can be using multiple internal loadbalancer, as far as the client doesn't use over 150 ports (the limit is actually 150).


Unfortunately no (real) solution, but hopefully it will clear things up.

- If it is broken, fix it. If it ain't broken, make it better.

Thanks Rob! Just upvoted it several times 😉 Let's hope M$ is going to listen this time. This has been a feature request since 2013 and isput on the feature backlog since november 2016





Michel van Kessel

L1 Bithead

As of September 2017 Azure Load Balancer HA Ports capability is in preview. Allows the use of 0 for port number and All for protocol type which is shorthand for all ports, all protocols -- very useful for forwarding all traffic hitting the load balancer VIP to the back-end VM-series pool members (for both inbound and outbound use cases) -- in a single load balancer rule.


Before HA Ports capability hits GA, request access to it (link above) and mind the regions where it is available.



L3 Networker



When using multiple PA firewalls on Azure how are you syncing the polices? Also for IPSEC are you terminated on PA or on Azure

VPN gateway?



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