(14-6-2001). [ E.Sobrino ] One day I needed to download soft from a FTP host that was behind a proxy and from which people could only navigate the web (as with computers of many users using cable-modem or in universitys).Here I explain the system I implemented to accede to these computers avoiding all firewalls and filters using redirection of inverted connections. Source code included.

(2-2-2001). [ E.Sobrino ] Linux and BSD servers (and perhaps other UNIX) has much more power than ADSL and ATM routers, this document explains how to trick the router to transfer all its functions to the computer. This way we leave router weaknesses out and we win in yield, control and security.

(2-2-2001). [ E.Sobrino ] In recent kernels 2,2 and 2,4, linux operating system supports advanced Quality of Service (QoS) through Netfilter, an option at present very unknown and undocumented. In this paper I take advantage of this feature to fragment bandwidth of our connection in 4 or more jerarquic levels with different speeds and priorities depending of the service, using the marking of packets that can do the linux firewall(ipchains/iptables). CLASSIFIED

(17-1-2000) [ E.Sobrino ] I made this text and exploit because there was much people thinking that this buffer overflow was not exploitable. Here I demonstrate that this is a wrong supposition and implement a remote exploit that executes a program of our selection in the remote host. This must be a warning for those programmers who use handlers of SEH to hide segmentation faults and feel false sense of security. CLASSIFIED