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#networking
4 posts tagged with this topic.
Blocking websites at the kernel layer on Linux — without a setuid binary
How I designed a per-user, system-wide website blocker that catches even raw-IP curl, while keeping a single narrow privileged surface and zero setuid bits.
Python Learning on Steroids
Going hands-on with networking and security in Python — sockets, packets, and learning a language by actually building with it.
Digital certificates in communication — what are those?
A from-scratch tour of PKI: public/private keys, hashing, digital signatures, and how certificates establish trust on the wire.
DNS record types and what they're for
A quick reference to the common DNS record types — A, AAAA, CNAME, MX, TXT and friends — and the job each one does.