I am fairly new to Linux but have played around with OpenSuse for a while. I am a veteran on microsoft servers and networking though.
I would like to use it as a firewall to protect my small business network. Can anyone point me to a guide which I can follow to make sure it is as secure as possible please? The only open ports published on the external interface are for rdp(3389), smtp(25), http(80) and https(443). I used NMap to scan the external address and it shows nothing but these ports. It could also not identify the OS. Passwords have been configured on the two root accounts.
I would opt to use a suitable tool for the job - although you can configure any Linux as a firewall, you should take a look at pfSense (which is BSD based) and is aimed at being just that. Runs with literally no resources to speak of so a really old computer would also do the job
Thanks for the tip, I will have a look at it. I am also trying sophos. I read the features of pfsense but dont see support for two firewalls running together, i.e. clustered or load balanced. It also does not support sstp vpn as far as I could find out. But maybe the add-ons can help with that. I will install it and check.
