All posts by Michael Albert

Uncategorized

Recovery: Recover files from SD Cards or dd image

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Hi,

linux has 3 tools for recovering files from a (damaged) SD Card or from an dd image taken by ddrescue. Usually all tools need an empty output directory.

Continue reading Recovery: Recover files from SD Cards or dd image →

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VMware

vSphere: Remove orphaned user from an sso group by command line

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Hi,

after migrating a vSphere vCenter instance from Windows to the VCSA appliance some (Windows local user which do no longer exists on linux) orphaned user are member of an SSO group.

Continue reading vSphere: Remove orphaned user from an sso group by command line →

Linux, Network

Network: Forwarding SNMP Traps by mail with snmptrapd and snmptt

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Hi,

this post describes a simply way to forward all traps by E-Mail received via SNMP.

This process is splited in several steps

  • Receive the traps => snmptrapd
  • snmptrapd calls the trapshandler script after each received trap. The trap details are handed over to the script by STDIN
  • The trap handler is /usr/sbin/snmptthandler. This script spools all traps to /var/spool/snmptt
  • The snmptt gets the traps from the spool folder, translate them in a human readable format and calls a custum script defined by snmptt.conf

Continue reading Network: Forwarding SNMP Traps by mail with snmptrapd and snmptt →

Windows, Windows knowhow

Windows: Prevent windows from installing a specific device(driver)

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Hi,

Windows Group Policies have to ability to prevent installation specific devices.

Continue reading Windows: Prevent windows from installing a specific device(driver) →

Uncategorized

Windows: Enable policy to prevent connections to multiple networks

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Hi,

via Windows Policy it is possible to restrict the access to multiple Networks.
Continue reading Windows: Enable policy to prevent connections to multiple networks →