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Configure a Host ISO-based Package Repository on a CentOS 7.2 VM

In a recent blog post, I demonstrated how to set up a local RPM repository (repo) in a VMware CentOS 7.2 VM (AKA guest) running under VMware Workstation (AKA the host.) This made the CentOS VM independent of the need for network access w.r.t. RPM package installation. However, the trade off for the ability to install packages without Internet access is the 6 GB plus increase in the size of the VM necessitated for storing all the packages and metadata. Consider the following alternative scenario. You have downloaded the CentOS-7-x86_64-Everything-1511.iso from the CentOS Project or a mirror, used the ISO

Decrypt PROLiNK ADSL Modem Configuration File To Reveal Backdoor

I was recently asked by a friend to examine the settings on a PROLiNK ADSL2 router modem, model PRS1241B, to see if the performance of the modem could be improved as he was having trouble using it for video conferencing. PROLiNK is a brand of Fida International (S) Pte Ltd, a Singapore-based company founded in 1991, that produces a wide range of consumer technology products including a range of ADSL modems and routers. As usual, I wished to make a backup of the current user-configurable settings before modifying any user configurable settings. PROLiNK makes this an easy task to accomplish