On Tue, 2005-11-22 at 11:23 +0000, Paul Collen wrote: > Hello, > > I'm new to Linux and I've inherited a Webmin controlled firewall. I'm > used to using a SonicWall firewall and just can't seem to get the hang > of the Linux firewall. My problem is I need to allow Outlook Web Access > through to a server. OWA is installed and can be used internally by > going to the server i.e. http://server/exchange We have an IP address I > can use to connect with but I just can't seem to let any traffic through > to the server, let alone just port 80 and 443. Are there any firewall > gurus that can give me some help please? <snip> I was in a similar position many years ago and found there are excellent tutorials available to help one understand iptables. In most cases, I found it to be far more powerful and flexible than other proprietary systems. Many tutorials are listed on the netfilter web site. There is an excellent one at http://iptables-tutorial.frozentux.net/iptables-tutorial.html You can also find some training slide shows in the training section of http://iscs.sourceforge.net although these are a little out of date. Good luck and welcome to the world of netfilter and iptables! - John -- John A. Sullivan III Open Source Development Corporation +1 207-985-7880 jsullivan@xxxxxxxxxxxxxxxxxxx Financially sustainable open source development http://www.opensourcedevel.com