To anybody who can help me: Has anybody implemented the feature for the netfilter ( the nf_conntrack, the generic, not the IPV4 ) module which deals with reduplication of the connection status (e.g. when we have two redudant routers/firewalls) or has anybody being working on it presently? I need this information because it is one of the topics of my new bachelor project. Does anybody know about any contacts or addresses, where i could get this information? Thank you for your help. Jan Simbera Faculty if Informatics www.fi.muni.cz xsimbera(at)mail(dot)muni(dot)cz ICQ 136154198