老实说，我不确定您需要什么访问级别，因为我在大多数情况下都使用了数据包跟踪器软件和实际硬件，而这两种软件都随闪存一起提供，但是让我澄清一下事实，即我并未建议"free"方法是窃取软件。我只是说"The only thing with GNS3 is that it does not come with 自由 flashes so you have to find those your self. "那可能是你的"cost".
我明白您的意思，但是要付出代价"metric" if you will in any action weather that be time, effort, money, 自由dom or some other tangible or intangible asset. I'm just saying that usually when someone refers to something as 自由 they don't include time, effort, 自由dom(licensing) they generally mean it won't 成本 you a dime. It's true that you'll run into many situations where the term 自由 is tagged along with "with purchase of"但老实说那只是糟糕的行销。
路由器和交换机-发出"配置替换[flash：| disk0：| slot0：] _ DO_NOT_DELETE_baseconfig" followed by a "复制运行配置启动配置" then reload.
ASA防火墙-发出"复制[flash：| disk0：| slot0：] _ DO_NOT_DELETE_bry-defaultonfig启动配置" and then reload.
PIX防火墙-发出"configure terminal", "配置出厂默认设置", "write memory", and then reload.
My approach to this is to first determine all the possibilities and then develop the software. Pressing a button remotely over the internet for 密码 recovery of a Catalyst switch is certainly doable but at what 成本?
I suspect the reason the 自由 public lab is off line here may have something to do with the fact that its becoming too much of a burden to reset the thing and the new improved setup will greatly improve upon that area as well as others.