Sometimes we might need to increase the download speed for different downloads such as files, torrents etc. On windows based systems to prevent rapid spreading of malwares from system to system microsoft introduced a limit to restrict half-open TCP connection limit to maximum of 10. This results in windows not to have more than 10 concurrent half-open outbound TCP connections. New connection attempts are put in a queue and forced to wait. Due to this speed of connection to other PCs is limited.You can change this configuration to your desired value in tcpip.sys file. The tcpip.sys file is a binary file hence require tool to do this. By increasing the half-open tcp connection limits, the tcp connection to remote pc becomes faster. make sure you use this feature carefully as your system might become target to malwares. Hence modify this configuration with all the necessary security measures( security softwares installed and configured )in place.The popular tool available to do this is available here.
We might wonder how to disable the USB ports on Mac to prevent data copy to external USB mass storage devices. The USB kext on os x is loaded at the time of start of the system, this can be loaded / unloaded using kextload or kextunload command. To disable USB port on Mac , follow below steps: On Macs running Mountain Lion, Mavericks and Yosemite : Unmount any connected USB devices to the system by running below command $ diskutil unmount /Volumes/USBDISK. Now unload the USB related kernel extensions in the following order using kextunload command. sudo kextunload -b com.apple.driver.AppleUSBCardReader sudo kextunload -b com.apple.driver.AppleUSBODD sudo kextunload -b com.apple.iokit.IOUSBMassStorageClass This wil...