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Allowing FTP inbound through firewall

Hello,

I'm working with a company that manages our timeclocks. (badge based system...not important.) What is important, is that in order for the clocks to do a firmware update, supposedly, the company makes an ftp connection to the clocks. Like, wan -> lan, tcp 21 -> 1:65535. Which is essentially how I have it configured.

Src : Zone -> WAN, Networks->Their IP address

Dest: Zone->LAN,Networks->Ip range of timeclocks

Services: TCP&UDP 1:65535->21:22,TCP&UDP 21:22->1:65535

Not matching users.

No web malware / content scanning boxes checked.

IP: WAN TO LAN

No traffic shaping, Web Policy->Allow All, Application Control->Allow All

Using standard MASQ

 

Firewall log picks up the traffic, but says it cannot associate packet to an connection, which I don't know what to do with.

The log entry matches my rule entry exactly, yet, still doesn't allow it through.

----------------Ex.---------------

time                  log type         Action  in interface  src ip          dest ip      src port  dest port  protocol  message

2019-06-06 10:31:34   Invalid Traffic  Denied  Port2         **Company IP**  **My GatewayIP**  21   40289      TCP       Could not associate packet to any

---------------------------------

 

Any help would be very much appreciated.

 

Regards,

Dan



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