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Is it possible to use a single board like the raspberry pi as a firewall and / or an intrusion prevention system ? Or even use a dedicated OS like clearOS ?

I know the Ethernet speed is a restriction but can all this done through only one Ethernet port anyway ?

Thanks

  • Wee bit careful with this question please Kevin - it's absolutely possible to use a single board machine of some kind to create a network security system, but we can't support any questions that aren't Pi-specific here. Would you mind rephrasing the question a little to focus exclusively on Raspberry Pis? – goobering Apr 25 '17 at 18:39
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it's absolutely possible to use a single board machine of some kind to create a network security system. Here is an example: https://opensource.com/life/16/3/firewall-your-home-network-raspberry-pi and an instructables project showing exactly what you are looking for: http://www.instructables.com/id/Raspberry-Pi-Firewall-and-Intrusion-Detection-Syst/

  • The first link since to required a another ethernet interface, but they don't mention that on other tutorial like the instrucables one. I wonder can we do without? cause ethernet though USB will be limited to the USB speed anyway, so I guess there is a massive speed lost ? – Kevin Apr 26 '17 at 9:44
  • @LowRisk not sure if you still need an answer regarding this, I just wanted to note that on a RPi the USB NIC is likely to be faster than the built in LAN port, see for example jeffgeerling.com/blogs/jeff-geerling/… – mastazi Dec 30 '17 at 12:11

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