Suggestions to secure FTP and trusted network

[mail2day () cox net]

hi and new to the field. I have the following setup:

TRUSTED NETWORK consists of a oracle server/apache webserver/mail server. Apache webserver has FTP Services enabled 
outbound only to FTP sever in service network(DMZ). It also has http/https enabled. Oracle server dumps data to 
webserver. SMTP services enabled out to cloud on mailserver. 

FIREWALL(CISCO PIX)

FTP server with two Nics to interface with internal trusted network and external cloud(incoming FTP from outside static 
ip clients)ALL OTHER DENY

FIREWALL(CISCO PIX)

UNTRUSTED NETWORK. CLIENTS WITH FTP APPLICATIONS THAT PUSH DATA TO FTP SERVER.
Clients that run HTTP/HTTPS services to webserver on trusted network.

With the very brief scenario above, I would like comments on vulnerabilities and how well the service network with dual 
nics protects me. Tks!

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