Opened 19 years ago

Last modified 16 years ago

#2236 closed Feature request

Does FileZilla support Clear Command Channel (CCC)?

Reported by: nymetrois Owned by: Tim Kosse
Priority: normal Component: FileZilla Client
Keywords: Cc: nymetrois, Tim Kosse, Eirik, Alexander Schuch
Component version: Operating system type:
Operating system version:


Using the CCC Command, we would like to initiate the

One way to allow the NAT operations of your router to
continue to function when using an SSL secured FTP
connection is by using the CCC command. CCC stands
for Clear Command Channel. It is a command issued by
the FTP client to the FTP server that indicates that the
command channel should be unencrypted. Data
transfers remain encrypted after issuing this command,
so all files transfers and directory listings remain
secure. However, with an unencrypted command
channel, your router can still follow the FTP transaction
and perform its NAT operations to assist with data
In order for CCC to work, the FTP server you're
connecting to must support this command. Our server

Change History (2)

comment:1 by Eirik, 18 years ago

Moving to feature request and assigning to codesquid.

comment:2 by Alexander Schuch, 16 years ago

This has been requested already, deleting this RFE.
[ 1036300 ] Support Ipswitch WS_FTP Server CCC Command

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