I have just been appointed net admin at the company I work for. Although I have some experience with Suse Linux and networks I have not yet delt with firewall configuration etc.
The problem: We are considering installing an ADSL connection (newly available in Greece) and I were discussing whether to use a PC as the firewall/router or a Cisco router. The problem is mainly a security one as having a static IP enables someone on the Internet to attack us.
Well either one is good, obviously linux+iptables firewall is cheaper.
Also is there any reason for the firewall and router software to run on separate machines? Is there any set-up anyone would propose for the network?
No, Both machines can be the same it really comes down to the expertice of the admin. Where I work our linux firewall handles routing, VPN, and firewalling services.
server at least for a couple of months or more. The only computers needing access to the Internet will be our mail server (?) and about 5 PCs.
Depending on your experience SuSE has a built in firewall that though simple seems fairly strudy and easy to configure. E-mail me if you have additional questions.