网络地址转换（NAT）技术于1994年提出，主要用于解决私有网络与公共互联网之间的通信问题。当内部网络中的设备已分配专用IP地址，仅限局域网使用，却需要与外部互联网主机进行通信时，可通过NAT实现。该技术无需加密，能将私有地址转换为公网地址，使 ...

This how-to shows how to use free Ansible software to automate configuration of Cisco routers and links to other Ansible modules that apply to other vendors' gear and support other functionality ...

VirtualBox is a free hypervisor for x86 computers developed by Oracle. By default, the drag and drop feature between the host and guest OS is not enabled. However, you can easily activate it. How to ...

VirtualBox is a general-purpose full virtualizer for x86 hardware. Targeted at server, desktop and embedded use, it is a professional-quality virtualization solution that is also Open Source Software.