RDP Inception and Password Changes

A common pain point that seems to come up regularly among technical folks is how to change a Windows account password over an RDP connection. The correct answer is Control+Alt+End, right? Of course. However, this doesn’t work as you might expect when you’re lost in RDP “Inception“. RDP inception is when you’re multiple levels deep […]

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Cfengine 3 Snippets Part 1: DenyHosts

I’ve recently begun looking into configuration management with cfengine 3. I’ve ignored this growing sub-field of system administration for too long and I just can’t ignore it anymore. After spending quite some time researching the philosophies, methods and different tools out there, I settled on starting out with cfengine 3. There’s no special reason that […]

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RHEL/CentOS, NFS and Firewalls

I recently decided that it’s about time to setup consistent, explicit and tight firewall policy across our Linux (mostly RHEL/CentOS) servers. One of the initial issues I faced was NFS. NFS implementations are very well known to make use of the portmapper and dynamically assigned port for rpc.mountd and because of this dynamic assignment, firewalling […]

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