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OpenBSD PF and OpenDNS

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At home, I needed a way to prevent anything but OpenDNS from being used for DNS, and needed a rule that would do it in OpenBSD PF.

AWS IP Range Automation

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AWS provides a list of their IP ranges for you to use when configuring whitelists, firewalls, and other things. The list is available in JSON from:

AWS Data Migration Service

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I was just doing some testing of the AWS Data Migration Service (DMS), and it isn’t obvious when setting up endpoints that the public IP address of the repli...