CODEWITHSUNDEEP
amazon-ec2ftpsublimetext3
Matthew
Matthew

Reputation: 932

Sublime FTPS Can't Validate Folder

Issue: When trying to connect to my server through Sublime SFTP Plugin using the supported FTPS method, everything seems to go smoothly except for the validation of the folder.

I have searched all over for a recourse to resolve this issue to no avail.

The strange part is when I look at my FileZilla Server Logs it seems to connect to the server just fine but the connection ends when it goes into PASV mode.

Below are the logs from the server:

(000056)5/16/2017 21:15:50 PM - (not logged in) (73.102.144.11)> Connected on port 21, sending welcome message...

(000056)5/16/2017 21:15:50 PM - (not logged in) (73.102.144.11)> 220-FileZilla Server 0.9.60 beta

(000056)5/16/2017 21:15:50 PM - (not logged in) (73.102.144.11)> 220 Welcome to the Collab Server

(000056)5/16/2017 21:15:50 PM - (not logged in) (73.102.144.11)> AUTH TLS

(000056)5/16/2017 21:15:50 PM - (not logged in) (73.102.144.11)> 234 Using authentication type TLS

(000056)5/16/2017 21:15:50 PM - (not logged in) (73.102.144.11)> TLS connection established

(000056)5/16/2017 21:15:51 PM - (not logged in) (73.102.144.11)> USER msechrest

(000056)5/16/2017 21:15:51 PM - (not logged in) (73.102.144.11)> 331 Password required for msechrest

(000056)5/16/2017 21:15:51 PM - (not logged in) (73.102.144.11)> PASS

(000056)5/16/2017 21:15:51 PM - msechrest (73.102.144.11)> 230 Logged on

(000056)5/16/2017 21:15:51 PM - msechrest (73.102.144.11)> PBSZ 0

(000056)5/16/2017 21:15:51 PM - msechrest (73.102.144.11)> 200 PBSZ=0

(000056)5/16/2017 21:15:51 PM - msechrest (73.102.144.11)> PROT P

(000056)5/16/2017 21:15:51 PM - msechrest (73.102.144.11)> 200 Protection level set to P

(000056)5/16/2017 21:15:52 PM - msechrest (73.102.144.11)> PWD

(000056)5/16/2017 21:15:52 PM - msechrest (73.102.144.11)> 257 "/" is current directory.

(000056)5/16/2017 21:15:52 PM - msechrest (73.102.144.11)> CWD /laravel/collabsession

(000056)5/16/2017 21:15:52 PM - msechrest (73.102.144.11)> 250 CWD successful. "/laravel/collabsession" is current directory.

(000056)5/16/2017 21:15:52 PM - msechrest (73.102.144.11)> TYPE I

(000056)5/16/2017 21:15:52 PM - msechrest (73.102.144.11)> 200 Type set to I

(000056)5/16/2017 21:15:52 PM - msechrest (73.102.144.11)> PASV

(000056)5/16/2017 21:15:52 PM - msechrest (73.102.144.11)> 227 Entering Passive Mode (127,0,0,1,55,249)

(000056)5/16/2017 21:15:53 PM - msechrest (73.102.144.11)> disconnected.

Additional Information
I can connect to the server fine using FileZilla Client from another desktop.
The server is on a Windows 10 AWS and has an elastic IP address.
I have opened port 21 for both the inbound and outbound rules on the firewall as well as added the program FileZilla Server as an exception in the inbound rules.
I went onto the AWS Admin Panel and added all of the ports (21, 990, and 14200 - 14400) to my inbound rules. 14200 - 14400 are the passive mode port ranges I specified on the FileZilla Server Admin Panel.

Could someone please point me in the right direction or let me know what I am doing wrong? Any help is greatly appreciated!

Upvotes: 0

Views: 923

Answers (1)

Yeshodhan Kulkarni
Yeshodhan Kulkarni

Reputation: 2943

SFTP vs. FTPS

In regards to how easy each of the secure FTP protocols are to implement, SFTP is the clear winner since it is very firewall friendly. SFTP only needs a single port number (default of 22) to be opened through the firewall. This port will be used for all SFTP communications, including the initial authentication, any commands issued, as well as any data transferred.

On the other hand, FTPS can be very difficult to patch through a tightly secured firewall since FTPS uses multiple port numbers. The initial port number (default of 21) is used for authentication and passing any commands. However, every time a file transfer request (get, put) or directory listing request is made, another port number needs to be opened. You and your trading partners will therefore have to open a range of ports in your firewalls to allow for FTPS connections, which can be a security risk for your network.

If you are using FTPS, you will face this issue based on the comments above.

The initial port number (default of 21) is used for authentication and passing any commands. However, every time a file transfer request (get, put) or directory listing request is made, another port number needs to be opened.

The most secure option is to use SFTP instead of FTPS.

Upvotes: 1

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