I have a Watchguard XTM 505 that I need a user to open up their FTP client and connect to the outside IP address of the building and have the watchguard forward that request to the ftp server at 192.168.1.5. The user has a username and password in the users/groups area. How can this be accomplished without having the user create a VPN? Thanks for any assistance!!
Sounds like you just need to add an FTP Filter policy to your XTM box with a NAT rule set on it:
This will open TCP port 21 up on your external IP address and pass all FTP traffic through to your server on 192.168.1.5. User just needs to FTP to your external IP address where they'll be prompted for their FTP username and password.