Do you still need a perimeter firewall?
Yes, if you have an office. No, it is not your only control. Identity is the new edge, and both still matter.
ITSIGN Administrator · April 9, 2025 · 2 min read
Most of your staff live in Microsoft 365. Most of your incidents start with a mailbox. That does not make the office switch a free-for-all.
Keep a perimeter. Segment. Then spend the next dollar on identity and email security behaviour — and the technical controls in 365.
The firms that get hurt skipped one side and bragged about the other.
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