AW: trusted & untrusted ports

[Meidinger Chris <chris.meidinger () badenit de>]

1. General rule: close everything and then open what you need
2. web applications work the same as everything else. they are usually on
port 80, but you can put them on any port. they are alse
client(browser)/server(httpd) applications; in fact they tend to be the most
common client/server applications.
3. take a look at 'INSIDE Network Perimeter Security' by
Northcutt/Zeltser/Winters/Frederick/Ritchey - this book will help you make
informed decisions about when and how to open holes in your network border.


-----Ursprüngliche Nachricht-----
Von: Hilal Hussein [mailto:hilalma () hotmail com] 
Gesendet: Sonntag, 9. November 2003 08:19
An: security-basics () securityfocus com
Betreff: trusted & untrusted ports



Dear List,

I would like to open ports in my firewall so that i can access some
applications out of my network. consequently, I have two questions:

1 - How I can Identify trusted ports vs. Untrusted ports ? assuming trust is
directly concern with the security prespective (include virus, worms, hack,
...).

2 - corret me from wrong please. "There are two types of applications: web
application (access through the http port), and client/server application
(access through a defined port should be opened on the internet gateway).

your feedback and respond are highly appreciated.

honeslty, I am getting very good information out of this email list, so
hopefully the answers will be benifitial to me and other members will to
improve their knowledge base.

regards,

Hilal

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