sysadmin

xz: Your next default compression tool

by bill_mcgonigle
August 1, 2017January 28, 2020

The xz compression program, run with defaults, can be so slow that you might wonder why anybody uses it. But on a modern machine, xz… Read More »xz: Your next default compression tool

rsnapshot-parallel

by bill_mcgonigle
July 28, 2017January 28, 2020

Today we released rsnapshot-parallel to Github. While we’ve used rsnapshot for years, recently with the proliferation of virtual machines we’ve noticed our backups running much… Read More »rsnapshot-parallel

Automatic HTTP Basic Authentication with mod_proxy

by bill_mcgonigle
March 21, 2016

Let’s say you need to access a resource that’s protected by HTTP Basic authentication but the system you’re using doesn’t support it. Like, say, Google… Read More »Automatic HTTP Basic Authentication with mod_proxy

Multi-Port Port Knocking with IPTables

by bill_mcgonigle
July 28, 2015

Maybe you’re tired of all the fail2ban log messages about attempts to crack your ssh passwords. Maybe you have developers who need to access a… Read More »Multi-Port Port Knocking with IPTables

RT – Redirecting Comments Directly to a Ticket with Postfix

by bill_mcgonigle
December 18, 2014

We would like to be able to redirect a message directly from our inbox to an RT ticket, in the form ticketnumber@rthost and have it… Read More »RT – Redirecting Comments Directly to a Ticket with Postfix