FTPS and Service - problem

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FTPS and Service - problem

L4 Transporter


I have FTP server on Debian 7 (ProFTPD 1.3.1) and security rule:


and now FTPS connection works.

With "application-default" as a service FTPS sessions hangs on listing directory and sfter some time FTP client was disconected.

I'm on 6.0.2 PAN with latest updates.

Is this a normal behaviour? According to best practice we should use "application-default" as a service - but in this case we couldn't.

Please share Your opinion about that.

With regards



Accepted Solutions

L4 Transporter

I got response from Support,

"This issue has been addressed with latest content and threat release version, I was not able to reproduce the same issue with the new version(while I was able reproduce with threat-version: 443-2274)."



View solution in original post


L6 Presenter


Can you please put enalarged Traffic log, I think FTPS is using non-standard port here. That why "Any" is required.


Hardik Shah

L4 Transporter

FTP server using standart ports.



Yes, FTP is using standard port 21 and it must work with application-default.

However, this discussion thread was opened for  FTPS, which is different than FTP. Can you provide enlarged log for FTPS?


Hardik Shah

What does mean "enlarged log for FTPS"?

Do You need "sh session id xxxx" output?

small  update, I'm using 1.3.4a ProFTPD.




If you read title for this thread it says "FTPS and service - Problem". Are you referring FTP by using word FTPS?


Hardik Shah

Hello SLV,

If you want to find out root cause for issue,  than try following commands.

debug dataplane packet-diag set filter on
debug dataplane packet-diag set filter match source <Client-IP>  destination <Server-IP>
debug dataplane packet-diag set filter match destination<Client-IP> source <Server-IP>
show counter global filter packet-filter yes delta yes
Than Generate Traffic
Again execute command "show counter global filter packet-filter yes delta yes"
Hardik Shah

Not applicable

you may want to look at the link below. FTPS is not a regular FTP

How to Allow FTPS/FTPES Traffic Through the Firewall

FTP uses 21 port

FTPS will use 443 port.

Applipedia doesn't have application name as FTPS.

L7 Applicator

Look at your Ubuntu proftpd.conf file and confirm what port is configured as the listening port for the traffic.  These are frequently on non-standard ports which mean you can't use application default.  You can use any or the better option of the specific port that is configured.

Steve Puluka BSEET - IP Architect - DQE Communications (Metro Ethernet/ISP)
ACE PanOS 6; ACE PanOS 7; ASE 3.0; PSE 7.0 Foundations & Associate in Platform; Cyber Security; Data Center
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