Hello. In the office we only have two public IP addresses, one for a file server and the other for NAT firewall (which is a linux host too). This is not so convenient because it's not possible to access hosts behind firewall without portmaping, and portmaping isn't convenient (e.g. for using tel-conference). I read a lot of IPv6 articles but they all seems to be written for very skilled person to read, I still cannot figure out if it is possible to solve our problem (too many portmapping) by using IPv6. Is it possible the office assign each desktop computer an IPv6 address, and replace NAT with something else, and solve our problem? All desktops are SuSE Linux, may be there could be one or two Windows XP box. Is it possible to use IPv6 when the ISP don't support IPv6? Is using IPv6 going to make our network slower? Sorry for this newbie and OT question, simply I think people here might knows. The "possibility" information is important to me, so that I can talk to the administrator and ask him to dig into how to do it (he is interested in if this is possible too). Once we know it is possible, he can always get it done by reading and learning the materiel from Internet. -- 锐业软服（国内业务） http://www.realss.cn Real SoftService http://www.realss.com 销售咨询(Sales Department): 0086 592 20 99987 (Chinese, German, English) 国际业务(International Sales): 0086 10 8460 6011 (German and English) 联系：厦门大学科技园，嘉庚二号楼6楼 邮政：厦门大学2312号信箱（邮编361005）