Mail Problems

Mail Problems

History It was a beautiful day. My mailserver on the Raspberry Pi B was running without any issues for some time now. In the evening of March 12th I got a nice email from my external DNS provider: The BuddyNS janitor writing. A safety notification on your BuddyNS account: Your zones reached 60% of your account's traffic quota. Details: * Total traffic produced this month: 181 Thousand queries. * Current traffic quota: 0.
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OpenBSD firewall applicance - Intro

OpenBSD firewall applicance - Intro

History Since some time our company Eurospider was using home-grown firewalls based on OpenBSD. Our administrator at this time (Mihai Barbos, https://github.com/mbarbos) decided to use Portwell NAR-2054 hardware with 3 up to 5 ethernet ports and run a customized OpenBSD on it. Now the company firewall is a Soekris net6501 as the Portwell firewalls started to become a little bit rusty. There is still one Portwell left in use for a control network serving access to remote management consoles of our servers.
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OpenBSD firewall and securityrouter.org

OpenBSD firewall and securityrouter.org

Found a really nice new router appliance based on OpenBSD 6.0, http://securityrouter.org. I’m still missing some features like a split-horizon DNS, so I will not abandon the script-based project http://git.andreasbaumann.cc/cgit/OpenBSD-firewall just for now.
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