Moylan ftp Connect to server failed ...

[jjurban]

Can someone please help me?
I am using an ancient version (1.27) of Moylan's FTP. on eCS version 2.0.
My global IP is 73.79.242.xx (didn't give the last number intentionally.  It is a Comcast number.
My netstat -a  showed 10.0.0.245 until a week ago.
All of a sudden it now shows  10.0.0.120.
I am using DHCP
I have run ftp-pmoylan\setup.exe and changed every parameter I could find from 10.0.0.245 to 10.0.0.120
I use FTP to backup my customers data as follows:
  I connect to their network using Cisco AnyConnect
  I use Oracle VirtualBox to run eCS as a virtual.
  I back up their data to a drive (E: or F:)
  Then I go to a Command prompt on the above drive and type
  FTP 73.79.242.xx (actual number)
  It connects. I log in and enter password, then
  Send myBackupFileName
THIS HAS BEEN WORKING FOR AT LEAST FIVE YEARS.
I have made no changes to either my system or theirs (other than the ftp-moylan 10.0.0.245 ==> 10.0.0.120 in setup.exe on my server)
All of a sudden it won't connect. I get message
"Connect to server failed, server may be down."

From their system, I can ping 73.79.242.xx
Tracerte 73.79.242.xx gives me reasonable-looking paths ending in a comcast location before * * *

FTPTRANS.LOG on my server shows an entry
  ****** Transaction logging started or restarted
               Server started

Then it just dies and above "Connect failed ..." message appears on their machine.
What am I doing wrong? What have I missed?
How can I make sure my server is running?
What is its address (10.0.0.120 or something else?)

[Andy Willis]

It sounds like you need to update your router's port forwarding.
Right now iftp requests to the external IP forward to the old internal address is my guess.

[jjurban]

Yes. Thank you.

I had thought that changing the addresses in ftp setup.exe was enough.

But changing the port forwarding address in the router's ftp service did the trick.

John