# For example: # # 102.54.94.97 rhino.acme.com # source server # 38.25.63.10 x.acme.com # x client host 127.0.0.1 localhost 127.0.0.1 www,wenxuecity,com 127.0.0.1 www.yahoo.com 127.0.0.1 68.12.128.1