apps:tcpdump
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apps:tcpdump [2015-09-03 18:47] – root | apps:tcpdump [2019-04-26 10:44] – [Dump for Wireshark with rotation] root | ||
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====== tcpdump ====== | ====== tcpdump ====== | ||
+ | |||
+ | ==== Filtering ==== | ||
+ | |||
+ | tcpdump uses packet filter syntax for filtering. For help see | ||
+ | <code bash> | ||
+ | man 7 pcap-filter | ||
+ | </ | ||
==== Port include ==== | ==== Port include ==== | ||
- | | + | <code bash> |
+ | # tcpdump -n -tttt -i rl0 dst port 221027 | ||
+ | </ | ||
==== Host include ==== | ==== Host include ==== | ||
- | | + | <code bash> |
+ | # tcpdump -n -tttt -i rl0 host 192.168.10.2 | ||
+ | </ | ||
==== SSH exclude ==== | ==== SSH exclude ==== | ||
- | | + | <code bash> |
+ | # tcpdump -n -i rl0 'not port 22' | ||
+ | </ | ||
==== Dump full Packages for Wireshark ==== | ==== Dump full Packages for Wireshark ==== | ||
- | + | <code bash> | |
- | # tcpdump -s 65535 -w / | + | # tcpdump -s 65535 -w / |
+ | </ | ||
==== Filter IPv6 Network ==== | ==== Filter IPv6 Network ==== | ||
- | + | <code bash> | |
- | # tcpdump -n 'net 2001: | + | # tcpdump -n 'net 2001: |
+ | </ | ||
+ | |||
+ | ==== Show IPsec packets ==== | ||
+ | <code bash> | ||
+ | # tcpdump -i igb0 -n -p 'udp port 500 or udp port 4500 or ip proto 50' | ||
+ | </ | ||
==== Dump for Wireshark with rotation ==== | ==== Dump for Wireshark with rotation ==== | ||
- | + | < | |
- | < | + | |
# tcpdump -i lo -G $((10*60)) -s 65535 -w / | # tcpdump -i lo -G $((10*60)) -s 65535 -w / | ||
</ | </ | ||
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* -Z root | * -Z root | ||
- | * Run as root user. //I had some permission problems with default user (tcpdump)// | + | * Run as root user. //I had some permission problems with the default user (tcpdump)// |
apps/tcpdump.txt · Last modified: 2023-09-09 15:13 by Manuel Frei