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volatile space Posts

MTU and MSS for IPsec Overhead

A Deep Dive and Byte-for-Byte breakdown of IPsec overhead to aid in calculating MSS Clamping, understanding why it’s needed, and its effects. Whats the difference between MTU and MSS? MTU or Maximum Transmission Unit is the largest IP Payload an interface can accept. It applies to the whole IP Packet.…

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Basic API logic app

I’ve been trying to find a good project to really leverage some API’s and even go a step further and implement some server-less functions. I really thought the best application for this would be at work, I mean where else am I going to find a project that needs this…

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Pushing Emerging Threats to ASA

Nothing too crazy, but maybe useful to someone else. I’ve been getting more alerts regarding IP’s coming from the Emerging Threats list, found here. There’s some resources there for automating block rules for some platforms like linux hosts, but nothing like an ASA. Choices for automating an ASA are…

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Azure Express Route – Route injection attack vector.

    Express route is a great way to get some private routing into your Azure space. Larger organizations may implement the peering themselves with a Cloud Exchange provider like Equinix. Smaller organizations may utilize a middle man who handles the peering on behalf of them. A good example is…

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