Tcpdump: Difference between revisions
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=FAQ= | =FAQ= | ||
==Look for ping== | |||
tcpdump -i enp1s0 icmp | |||
==human readable output== | ==human readable output== | ||
tcpdump -lnX | tcpdump -lnX | ||
==tcpdump filtering== | |||
===look for host and port=== | |||
tcpdump -i ens192 host 192.168.101.3 and tcp port 993 | |||
===show connections to a certain port=== | |||
tcpdump -i eth0 tcp dst port 80 | |||
==tcpdump: NFLOG link-layer type filtering not implemented== | ==tcpdump: NFLOG link-layer type filtering not implemented== | ||
Try adding interface (-i) | Try adding interface (-i) | ||
==tcpdump: Mask syntax for networks only== | |||
To match a subnet use '''net''' instead of '''host''' | |||
[[Category:Networking]] | |||
Latest revision as of 08:43, 25 March 2026
Docs
- http://www.rationallyparanoid.com/articles/tcpdump.html
- http://bencane.com/2014/10/13/quick-and-practical-reference-for-tcpdump/
- https://hackertarget.com/tcpdump-examples/
Tools
- wireshark
FAQ
Look for ping
tcpdump -i enp1s0 icmp
human readable output
tcpdump -lnX
tcpdump filtering
look for host and port
tcpdump -i ens192 host 192.168.101.3 and tcp port 993
show connections to a certain port
tcpdump -i eth0 tcp dst port 80
tcpdump: NFLOG link-layer type filtering not implemented
Try adding interface (-i)
tcpdump: Mask syntax for networks only
To match a subnet use net instead of host
