如何获取客户端IP和MAC地址,我获取的是服务器的!!! C#

<FORM id= "formfoo " name= "formbar " action= "indexdo " method= "post "> <INPUT value= "00-11-11-B4-52-EF " name= "txtMACAddr "> <INPUT value= "210423850 " name= "txtIPAddr "> <INPUT value= "zhupan " name= "txtDNSName "> </FORM> 如何传值，只要客户端访问立即传客户端IP和MAC 不要客户端任何操作

设置限速即可。