Not able to connect to the my office WI_FI

Please help me connect to my office wi-fi. I have followed all the instructions to connect to the wifi, but couldnt connect.
I have given the user name and password, Proxy host name field, enter 172.22.6.26 Port: 80, Save the settings and back out to check the connection under Wi-Fi setting.
but there is still some problem. help me through.
Thanks.