Tcpdump cheat sheet: Difference between revisions
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=== Packets from host A.B.C.D on port 1234 === | === Packets from host A.B.C.D on port 1234 === | ||
<pre>tcpdump -i eth0 -s 0 host A.B.C.D & | <pre>tcpdump -i eth0 -s 0 host A.B.C.D and port 1234</pre> | ||
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=== Packets from host A.B.C.D on port 1234 and ASCII decode on screen === | |||
<pre>tcpdump -i eth0 -s 0 host A.B.C.D and port 1234 -A</pre> | |||
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Packets on port 1234 for 10 minutes | === Packets on port 1234 for 10 minutes === | ||
<pre>tcpdump -i eth0 -s 0 -G 600 -W 1 | |||
Read: dump tracefile <filename> once after 600 seconds | |||
<pre>tcpdump -i eth0 -s 0 -G 600 -W 1 -w <filename> port 1234</pre> | |||
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Latest revision as of 06:09, 25 August 2022
Display packets from A.B.C.D on interface eth0, no name resolution
tcpdump -i eth0 -s 0 -nnn host A.B.C.D
Save packets to tracefile <filename> on interface eth0 with exclusion of ssh
tcpdump -i eth0 -s 0 -w <filename> port not 22
Save icmp packets to tracefile <filename> on interface eth0
tcpdump -i eth0 -s 0 -w <filename> icmp
Packets from host A.B.C.D on port 1234
tcpdump -i eth0 -s 0 host A.B.C.D and port 1234
Packets from host A.B.C.D on port 1234 and ASCII decode on screen
tcpdump -i eth0 -s 0 host A.B.C.D and port 1234 -A
Packets from multiple host
tcpdump -i eth0 -s 0 host 1.2.3.4 or host 5.6.7.8 or ...
Packets on port 1234 for 10 minutes
Read: dump tracefile <filename> once after 600 seconds
tcpdump -i eth0 -s 0 -G 600 -W 1 -w <filename> port 1234
Stop
<Ctrl>-C