Home Network & IoT
tcpdump home capture recipes
Practical capture filters for home gateways and SPAN sessions.
Authorized testing only. Practice on systems you own, isolated labs, or targets with written permission. Unauthorized access is illegal.
When
Investigating a noisy device or verifying DNS/VPN traffic paths.
How
Capture on router/mirror port; open in Wireshark; filter by host MAC/IP.
Why
Ground-truth traffic analysis for your own network.
Commands & usage
sudo tcpdump -i any host 192.168.1.50 -w device.pcap
sudo tcpdump -i eth0 port 53 -n
sudo tcpdump -i br-lan not port 22 -c 1000 -w sample.pcap
Commands are educational examples. Adapt hosts, paths, and rates to your authorized scope.
Tags
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