On Tuesday 29 June 2004 4:43 pm, Li Xinyi wrote: > Hi, there > > I started to learn iptables a few weeks ago. I am stuck at moment because I > dont have many machines to play with. I am wondering is there any tools, > which can be used to build a virtual envionment to play with routing and > packet filtering on sinple machine. Tools like VMware would not be my > choice because I only have 1GHz PIII with 256M memory. It's very hard to route any packets when you only have one machine (real or virtual). I really think a minimum of two machines is necessary to do much experimenting with netfilter - one machine as a client you can control, one as the router / firewall you want to test things on, and then a connection to the Internet where you can find all the servers... VMware would indeed be an effective way to do this, however 256Mb RAM isn't going to go very far :) Regards, Antony. -- "Linux is going to be part of the future. It's going to be like Unix was." - Peter Moore, Asia-Pacific general manager, Microsoft Please reply to the list; please don't CC me.