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2013
2001

Securing Ubuntu

Table of Contents Initial Setup Setting up iptables and Fail2Ban Fail2Ban iptables rules Make shared memory read-only Setting up Bastille Linux Configuring Bastille sysctl hardening Setting up a chroot environment Securing nginx inside the chroot Extras Initial Setup Let’s login to our new machine and take some…

2007

Some Notes About Time

This is a trade-off: you can't represent a leap second, and your time is guaranteed to go backwards. On the other hand, every day has exactly 86,400 seconds, and you don't need a table of all previous and future leap seconds in order to format Unix time as human-preferred hours-minutes-seconds.