So cisco intrusion prevention system(IPS) runs on UNIX platform. we have been facing this FTP issue where the three way handshake gets completed, the ftp sends a FTP 220 request to the IPS. But the IPS doesn't respond,eventually after few minutes the FTP timesout. in terms of UNIX how can i troubleshoot this??

  • switch between active / passive transfer mode. – Ipor Sircer Nov 4 '16 at 21:53

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