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Cannot access ftp server from the outside

I have inherited a small hp form factor pc that was set up as an ftp server running windows xp sp2.

The server is part of a workgroup named FTP. The PC name is SERVERFTP with and IP address of 172.16.X.X. My problem is that access to the server works with out any issues when I am internal here a work. If myself or anyone attemps to access this server from the outside, they cannot connect. Example if you try to use IE it attempts to connect but says page cannot be displayed. I know very little about FTP server setup. I also noticed that there is a dns entry for the server name and IP address. Can anyone tell me what I may be doing wrong or point me in a direction. Again please keep in mind very little network experience.
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1 Solution
Is the ftp server setup behind a firewall or router? If so you might look at the settings in the firewall/router since you can access the ftp server internally.
If you configure the FTP server with a public IP address and do a One to One Nat or simply open up port 21 (FTP), you'll be able to access it from the outside.

djp12345Author Commented:
Yes I do have a firewall. Cisco PIX
Try something like this in your config file

fixup protocol ftp 21
name 172.16.x.x SERVERFTP
access-list outside_in permit tcp any interface outside eq ftp
pdm location SERVERFTP inside
static (inside,outside) tcp interface ftp SERVERFTP ftp netmask 0 0
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