The  challenge featured a .pcap file to download, after checking it for  a while i found a GET request to /staff.html 
![Ricgiesta](https://user-images.githubusercontent.com/59454895/79156182-54ee7180-7dca-11ea-84f4-f4599f7dfe48.PNG)
so i just tried to make a get request to freewifi.ctf.umbccd.io/staff.html and i got the flag  in the main web-page : 
![Prima](https://user-images.githubusercontent.com/59454895/79245164-a7359e00-7e6f-11ea-9bf0-56f45a480e71.PNG)+
Flag: DawgCTF{w3lc0m3_t0_d@wgs3c_!nt3rn@t!0n@l}