Help: Data Request is not for client and server-to-server transfers are disabled

Questions dealing with specific FTP clients and Cerberus FTP Server.
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GordianNetworks
Posts: 1
Joined: Mon Sep 12, 2016 1:56 pm

Help: Data Request is not for client and server-to-server transfers are disabled

Post by GordianNetworks » Mon Sep 12, 2016 2:26 pm

I am getting the following error, and need to get this fixed. Thanks in advanced for any help.

2016/09/12 09:58:54 [6] Incoming connection request on FTP interface 0 at 10.11.12.30
2016/09/12 09:58:54 [6] FTP connection request accepted from 72.215.207.9
2016/09/12 09:58:54 [6] AUTH TLS
2016/09/12 09:58:54 [6] 234 Authentication method accepted
2016/09/12 09:58:55 [6] SSL connection using TLSv1.0 (DHE-RSA-AES256-SHA), 256 bit encryption
2016/09/12 09:58:55 [6] SSL connection established
2016/09/12 09:58:55 [6] PBSZ 0
2016/09/12 09:58:55 [6] 200 PBSZ=0
2016/09/12 09:58:55 [6] USER elaine
2016/09/12 09:58:55 [6] 331 User elaine, password please
2016/09/12 09:58:55 [6] PASS ***********
2016/09/12 09:58:55 [6] Native user 'elaine' authenticated
2016/09/12 09:58:55 [6] [elaine] 230 Password Ok, User logged in
2016/09/12 09:58:55 [6] [elaine] TYPE I
2016/09/12 09:58:55 [6] [elaine] 200 Type Binary
2016/09/12 09:58:55 [6] [elaine] PROT P
2016/09/12 09:58:55 [6] [elaine] 200 PROT P OK, data channel will be secured
2016/09/12 09:58:55 [6] [elaine] PORT 10,0,0,250,195,141
2016/09/12 09:58:55 [6] Data request is not for client and server-to-server transfers are disabled
2016/09/12 09:58:55 [6] [elaine] 500 Port command invalid
2016/09/12 09:58:55 [6] [elaine] DELE admin@thealtkey.com_20160912_103813.pdf
2016/09/12 09:58:55 [6] [elaine] 500 User does not have permission
2016/09/12 09:58:55 [6] [elaine] QUIT
2016/09/12 09:58:55 [6] Connection terminated

pacman
Senior User
Posts: 187
Joined: Thu Apr 28, 2016 1:54 pm

Re: Help: Data Request is not for client and server-to-server transfers are disabled

Post by pacman » Mon Sep 19, 2016 10:51 am

In this case It looks like the PORT command is getting rejected in this case because the client is providing a different IP address in their PORT request than the connection originated from.

There is an option on the Advanced page of the Server Manager called "Deny FXP Transfers" that is checked by default. You can uncheck it to allow different IPs to be specified for the PORT command that the IP of the originating connection.

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