Dear all,
I have a question on the networking and Apache component issues. Hope I can explain well.

We going to implement an internet solution for the customer. Basically, they definitely will use the Oracle Database (3rd - Tier) and Application Server (Middle Tier).
Besides that, we also have another server call Web Server consists most of the Static Page, Web mail, bulletin, Chat Room (Using php).

All the server is using Unix base

Basic Flow as below

External user -> Internet -> router -> Firewall -> Web Server -> App Server -> Firewall -> App Server -> Database -> App Server -> Firewall -> Web Server -> User

When the user going to hit the main homepage is Oracle Portal which contain dynamic and static page. Dynamic Page will go to the app server to grad the information whereas the static page can easily get it from web server.

Question 1
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Can the Oracle Apache Server run on the Web Server having mod_php ?

Question 2
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How to selectively install the Oracle IAS components like mod_jserv, mod_plsql or http listener ?

Question 3
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Can someone explain to me the usage of each mod available ? I know there are the documentation available, but I need some practical explaination. Please help me on this. or guide me to the web site explain on this.

Hopes u understand what I am explained.
Thanks for your time reading this.