FTP Active vs Passive - Which one is right to your needs?
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networking - What is the difference between active and passive FTP? - Stack Overflow
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FTP Active vs Passive modes
FTP Active vs Passive - Which one is right to your needs?
iStudy Networking : How Active and Passive FTP mode works.
File Transfer Protocol > CCIE Security v4.0 Quick Reference: Application and Infrastructure Security | Cisco Press
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FTP Optimization
Active vs Passive FTP Mode: Which One is More Secure? | securitywing
Beckhoff Information System - English
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FTP - Active vs Passive - Fir3net
Taking Advantage of FTP with To-Increase Connectivity Studio
