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You are planning a Microsoft Teams Phone deployment. That will use Direct Routing. You need to allow traffic from Microsoft 365 to a Session Border Controller (SBC). Which IP address ranges should you allow through the firewall?
Suggested Answer: A
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12 comments · newest first
DE
Delmy
3 months ago
B seems too local. Not suitable for Microsoft 365 traffic.
ET
Ettie
3 months ago
Agreed! A makes sense for Direct Routing.
DE
Deonna
3 months ago
I think A is the right choice. Those IP ranges are for Microsoft services.
JE
Jeannetta
4 months ago
I thought it was D) at first, but A) makes more sense.
EV
Evette
4 months ago
B) is just local IPs, not for external traffic.
KI
Kiley
4 months ago
Wait, are we sure about that? Seems too specific.
LU
Lucy
5 months ago
I agree, those are the right ranges for Microsoft 365.
XE
Xenia
6 months ago
Definitely A) 52.112.0.0/14 and 52.120.0.0/14!
TO
Tomoko
6 months ago
I feel like I’ve seen those ranges in documentation before. A sounds familiar, but I need to double-check.
AL
Alison
7 months ago
I’m a bit confused; I thought Direct Routing used different IPs. Could it be D instead?
CE
Cecilia
7 months ago
I remember practicing a similar question, and I think it was about allowing traffic from Microsoft services. A seems to fit that context.
LE
Lezlie
7 months ago
I think the answer might be A, but I’m not completely sure about those specific IP ranges.