AzureLoadBalancer

Question

Is there a way i can allow range of ports for our FTP server on the Azure load Balancer like 5000-7000 for passive FTP communication?

Answer 1

Hi @Tech ,

There is no way to add a port range in load balancing rules at the moment. You need to create rules for each of those ports in Load balancer individually.
If you configure port 65440 to 65450 in Passive mode, then you need to create 10 rules for those ports in Load balancer so that it forwards the traffic to the backend server.

Please upvote or acceot as answer if it helped.

Answer 2

Hi @Tech ,

Welcome to the Microsoft Q&A Platform. Thank you for reaching out & I hope you are doing well.
I understand that you would like to configure a range of ports in the Load Balancing Rule in Azure SLB.

In case you are using a External SLB,

• I am afraid this won't be feasible
• You will be required to create individual rules for individual ports as mentioned by @rafalzak .

In case you are using a Internal SLB,

• You can consider using High availability ports
• While you cannot specify the set of port ranges, HA port allows you to load-balance all protocol flows on all ports simultaneously

Kindly let us know if the below helps or you need further assistance on this issue.

Thanks,
Kapil

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