Logging mobile apps using DD-WRT

Today, I wanted to log the transmissions of a mobile app. I logged into my DD-WRT router and ran the following command.

# tcpdump -i br0 -w moto.pcap host 192.168.5.119

The IP address shown is the address of my mobile phone in my local network.

I then copied the captured file moto.pcap to my desktop computer and opened it in Wireshark which provides a very nice visual way to inspect the transmitted data.

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