# sewing-waste-and-agriculture-leftovers > UDP - UNRELIABLE datagram protocol. ## About the Challenge We have been given a `pcap` file (You can get the file [here](swaal.pcap.gz)) ## How to Solve? First i extract the pcap and then import the file into `Wireshark`. And then check every packet by pressing `Ctrl + Alt + Shift + U` to follow the UDP stream ![udp_1](images/udp_1.png) ![udp_2](images/udp_2.png) If we examine each packet, the data in each packet will form a flag but there are still many parts missing, so to solve this chall there are 2 ways combine each packet manually (Like me :D) or you can create a script to get the flag. In this case i check every packet manually and then you will get the flag ![flag](images/flag.png) ``` kalmar{if_4t_first_you_d0nt_succeed_maybe_youre_us1ng_udp} ```