> -----Original Message----- > From: netfilter-bounces@xxxxxxxxxxxxxxxxxxx > [mailto:netfilter-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of > Paul Collen > Sent: Tuesday, November 22, 2005 6:23 AM > To: netfilter@xxxxxxxxxxxxxxxxxxx > Subject: FW: Linux Firewall Problem > > 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? > > Cheers, > > Pablo As John pointed out there are a lot of good tutorials out there for iptables and most of them should at least get you up and running. Some advice with OWA, since I (am forced to) provide it externally where I admin: set up forms based authentication, require HTTPS, and in Exchange's System Manager, remove OWA functionality from any privileged account. You should only need to open port 443 to the server (unless of course it is your mail exchange). Derick Anderson
