LinuxCon 2011: Day 1

Today was the first day of LinuxCon North America 2011. I managed to received a free pass to the event via a contact at my place of employment which was in turn actually from Hewlett Packard. Thanks, JK and HP. Much appreciated. I arrived shortly after 8AM, registered to receive my badge and t-shirt then […]

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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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IBM Changed UPS Vendors

Just recently, I discovered that IBM decided to quietly switch their UPS vendor from APC to Eaton (Powerware). We needed to replace a dead IBM UPS 3000 XHV (SmartUPS-3000) and so I ordered a new IBM UPS, the UPS 3000 HV (Eaton 5125). Upon receiving the UPS, I noticed that the battery and power module […]

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