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SandeepKumar-4852 asked Farid2022 commented

MS Teams Direct routing multiple ports with inbound rule on external LB

Hi,

I have to setup MS teams direct routing & for that i will have to create inbound NAT rule on External LB for lot of ports.

Everything is in Azure. I know we have limitation to add max 300rules per NIC & also cannot add range of ports.

Flow:-
internet --> Azure external LB --> checkpoint Firewall --> SBC server

do we have any other solution for this.. I don't need to use F5 & other LB specifically.

here i see one document for MS teams.
https://docs.microsoft.com/en-us/MicrosoftTeams/direct-routing-plan

azure-virtual-machines-networkingazure-load-balancer
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the request came to open 10000 ports to SBC ... but here i am quite surprised, as the article is saying there are range of ports in the source we can use & destination will be 5061?

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You can absolutely add a range of ports on an NSG. I could not find any info about the port ranges needed on that link for teams, can you clarify this at all?

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Hi Kumar,

I have the same requirment to host sbc in Azure behind a CP FW.
I think we can use the VIP of the FW instead of the NLB, which is limited in number of ports to forward.
I would appreciate if you may share with me your finding on that topic.

Thank you

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