Famous Tool
by filtering with 'tcp.port==21 && ftp' we get some response with 200 and it's FTP version{vsFTPd 2.3.4}.We can mark some logging attemps also. So this the way to access the server. more filter with tcp we mark a reverse shell to port 6200 win.now try to analyse this tcp header we will find a famos tool Metasploit.