Only faculty and students of SRM can use the SRM wifi.
A username and password for wifi is sent to you on your official SRM email id and the number you’ve have given.
You login into the wifi, by selecting peap security and then login once again in the network with the same username and password to access the internet.
If it is not working then all you have to do is go to itkm on the 4th floor of University building and talk to one of the guys over there, they’ll definitely help you out.