firewall nujen, antivirus ne obyazatelno.. po krayney mere na danniy moment.. v suse zapusti Yast -> Security and users -> Firewall. Tam viberi interface cherez kotoriy u tebya lokalka ili inet, i zapreti vse servisi... dlya desktop'a dostatochniy uroven' securnosti

i pod root'om ne rabotay eshe.. udachi