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354 bytes added ,  08:56, 9 October 2018
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-E : Decrypt IPSEC traffic by providing an encryption key.</nowiki>
 
-E : Decrypt IPSEC traffic by providing an encryption key.</nowiki>
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=== 1500 bytes capture excluding port 22 ===
 
  tcpdump -i eth1  -s 1500 port not 22
 
  tcpdump -i eth1  -s 1500 port not 22
   −
You can skip additional ports too:
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=== Skip ports ===
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tcpdump -i eth1  -s 1500 port not 22 and port not 53
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=== Filter ip or hostname ===
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tcpdump -i eth1 port not 22 and host 1.2.3.4
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=== Raw output view ===
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tcpdump -ttttnnvvS
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=== Hex output ===
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tcpdump -nnvXSs 0 -c1 icmp
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=== Filter by source or destination
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tcpdump src 2.3.4.5
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tcpdump dst 3.4.5.6
   −
  tcpdump -i eth1  -s 1500 port not 22 and port not 53
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=== Filter by net ===
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  tcpdump net 1.2.3.0/24
   −
You can also use ip or hostname:
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=== Filter by port ===
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tcpdump port 3389
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tcpdump src port 3389
   −
  tcpdump -i eth1 port not 22 and host 1.2.3.4
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=== Filter by protocol ===
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  tcpdump icmp

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