/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: DavideRobustini https://cdn.slidesharecdn.com/profile-photo-DavideRobustini-48x48.jpg?cb=1523010774 Specialties: Operating systems: MS Windows, Unix/Linux(Ubuntu) and their security issues (Hardening and Balancing). Security appliances: Firewall (Netfilter/Iptables), IDS/IPS and encryption algorithms such AES and RSA. Analysis and network testing tools: Tcpdump, Ethercap, Nmap, Nemesis, Snort, Sipsak. VoIP Protocols: Q.931(ISDN), SIP and H.323. Languages: C, SQL, PHP and XML.. Secure deleting and Data disclosure risk.