其实就是地址伪装。随便找本linux的书都可以看个明白。
client--192.168.1.5-(192.168.1.1)/(202.102.14.111)==>202.102.14.111--www.163.com
www.163.com->202.102.14.111->(202.102.14.111)/(192.168.1.1)->192.168.1.5
就这个链了。明白吗?
if you use route at client,then you will see:
0.0.0.0 0.0.0.0 192.168.1.1
and if you use route at server,then you will see:
192.168.1.0 0.0.0.0 202.102.14.111