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Security writing that is useful

Short pieces from the engineers who do the work. No vendor recaps, no recycled threat-intel newsletters.

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Network and Firewalls2 min read

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

Network and Firewalls2 min read

Site-to-site VPN mistakes we still walk into

Overlapping subnets, stale tunnels, and a second office that was never documented.

ITSIGN Administrator · April 2, 2025

Network and Firewalls2 min read

Firewall change control that people will actually follow

If the process takes a week, someone will bypass it on a Friday. Make it short and recorded.

ITSIGN Administrator · March 26, 2025

Network and Firewalls2 min read

Guest Wi-Fi that can see finance is not guest Wi-Fi

Cameras, visitors and the shop floor do not belong on the same VLAN as the accounting share.

ITSIGN Administrator · March 19, 2025

Network and Firewalls2 min read

Next-gen firewalls vs the one you already paid for

Buying a new logo does not enable the features sitting unused on the current box.

ITSIGN Administrator · March 12, 2025

Network and Firewalls2 min read

Firewall rules that look secure and are not

Any-any leftovers, shadowed rules, and objects named after people who left in 2019. A walk-through.

ITSIGN Administrator · March 5, 2025