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--- linux_wiki:tcpdump [2015/05/07 22:13]
billdozor created
+++ linux_wiki:tcpdump [2019/05/25 23:50]
@@ Line 1: / Line 1: @@
-====== Tcpdump ======
-**General Information**
-Capturing packets with tcpdump
-**Checklist**
-  * tcpdump package installed
-----
-===== Max File Size, Log Rotate Capture =====
-This type of capture is intended for collecting packets for an extended period of time and limiting how much disk space is used.
-<code bash>
-tcpdump port 80 -s 0 -vvv -C 100 -W 50 -w /tmp/mycapture.pcap
-</code>
-Explanation
-  * port 80 : Capture on port 80
-  * -s 0 : Capture all packet contents
-  * -vvv : Max verbose logging details
-  * -C 100 : Store up to 100 MBs of data per file
-  * -W 50 : Store 50 rollover files, then start over writing. (mycapture.pcap00 - mycapture.pcap49)
-  * -w /tmp/mycapture.pcap : location and name of capture log(s)
-MB per file x 50 rollover files = 5000 MB total disk space used.
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