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Mikko Kenttälä in SensorFu

Oct 7, 2019

Isolated Networks in the Cloud

Network isolation is an vital part of any layered security approach. It’s used by all players, from small businesses to large organizations, in different capacities. More demanding networks require a high level of outbound filtering, to prevent data exfiltration and lessen…

lvj in SensorFu

Mar 27, 2022

Firewall bypass with CARP in OPNsense Packet Filter

Ossi Herrala in SensorFu

Dec 9, 2019

How we turned 5G into 5k

Hacking is a good way to learn and hackathons are a great place to learn with other like-minded people. And that…

lvj in SensorFu

Jan 8

Escaping isolated networks using Broadcast DNS

One of our latest escape methods is the capability send…

Mikko Kenttälä in SensorFu

Mar 2, 2018

Why Ethernet Broadcast Escape Tests Matter

We recently implemented a network escape to SensorFu Beacon that uses Ethernet broadcasts. Why? First of all you can test all the hosts in the LAN (Local Area Network) with one packet. Second, with broadcast frames, all the devices in the LAN think the…

janikenttala in SensorFu

Jul 18, 2018

DNS Servers in Isolated Networks — Will they Leak?

When it comes to isolating networks, DNS servers require special attention. DNS servers may leak information from isolated network by proxying queries all the way to the Internet. At worst, a malicious actor can smuggle secrets out.