Configure Ubuntu x64 in a Firewall

Hi people, I have few questions about how to make my old home pc in a firewall
Is athlon 64bit, 512mb, two lan cards, 2hd etc


+ Can I Install an Antivirus solution In Ubuntu?, to Detect MS Windows risk, like trojans, etc... Exits?
+ Suppose: I have a good external configuration ... but the hacker can use the internal network ... How to configure the internet to use it? and Other services like storage, sharing without compromising the server
+ Would be possible to completely block the MAC address?
+ Recommendations for hardware&software security (important) Manuals, documentations

Sorry, but I am newbie in Ubuntu,
any help can be appreciate

Best Regards

 

in one easy step i recommend you use dedicated firewall UTM(Unified Threat Managementt) if you are looking for that

http://www.endian.com/

i have used that over a year very good and strong firewall based on centos also you get clamav antivirus and snort for packet filtering its one of best

its made on ipcop which is made on award winning firewall smoothwall

so at end you get a hardware security suite kinda made in linux

also it works as utm/firewall/router all you need to connect your pc to your old pc vio browser and set everything gui mode very easy and simple

very simple install it via live cd its does every thing auto its ask for green IP (internal ip address)

then after installation


connect it via 192.168.X.X (ip you have given) + port 10443 from your other pc web brower

example https://192.168.1.1:10443 you need to type from your browser that you get the gui interface from there set every thing


also please check this guide its very easy old one but better than new one explain every thing very well

http://docs.endian.com/archive/2.1/index.html

also

new one here

http://docs.endian.com/