TCP 3 way handshake is just not happening

QBox Module 5
#1

So i have connecting to vsftpd using filezilla and even transferred files successfully.
But when the tcpdump -i any port not 8080 -w command which im using is correct right?
In the pcap file i filtered according to find 3 way handshake but all im seeing is the 1st and 2nd step but the 3rd (acknowledgement isnt happening)

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3-way handshake check keeps failing
Could not figure out filters (port,protocol) of tcpdump command!
#2

Hi @Mann,

  • Check on what type of TCP packets does your current display filter tcp.flags.syn==1 return ?

  • Now, to get the third type too, check on how to use multiple Wireshark display filters

1 Like
#3