Free over software for linux

Shell over ICMP consists of two free and open source applications: one server and one client. Shell over ICMP project allows a user to connect to a remote shell daemon, by using ICMP protocol instead of classical TCP.
Entirely written in Python, soicmp is a working proof-of-concept to demonstrate that data can be transmitted across a network by hiding it in traffic that normally does not contain payloads.
How does it work?
The soicmp server is a daemon that must be started on the remote server. When the server receives a request from the client it looks into the packets payload. The payload must respect certain protocol rules. In detail the client must specify:
command
communication mode (echo|echo/reply)
authentication (y|n)
This is an example of a correct payload string sent by client to server:
$CMD ls -a $MODE echo/reply $PWD root2005 $END
If the payload matches with the server protocol specification then it will pipe the command to "/bin/sh" or "cmd.exe" and execute it. The server then reads the result from the pipe and sends it back to the client that will print it to stdout.
Moreover every client will send ICMP packets having id equal to the clients current process ID and will accept only ICMP replies having the same id value. This prevents output to be printed by other client instances running on the same workstation (this argument is also treated in the FAQs section).
Main features:
- Platform independent.
- Possibility to run soicmp daemon on multiple ethernet interfaces simultaneously handling multiple client connections.
- Possibility to specify the buffer size of outgoing packets.
- Client side source IP address spoofing.
- Remote client case-sensitive (plain texted) authentication.
- Possibility to select two communication types:
- One based on encapsulating command output in unique "one way" ICMP_ECHOREPLY (type 0) packets sent by server to client (see fig. 1).
- Another one that guarantees the correct packets delivering by using the request/response nature of ECHO and ECHOREPLY ICMP packet types (see fig.2)
- No listening sockets are listed by netstat or similar programs.

ATA over Ethernet Tools are intended for use in conjunction with an ATA over Ethernet (AoE) driver for a Linux 2.6 kernel.

They perform simple tasks like listing available devices, triggering device discovery, and restricting the network interfaces on which AoE is performed.

Whats New in This Release:

This release includes a workaround for a bug in the dash shell where dash does not support POSIX math expressions like ...

n=1
echo $((n+1))

Pioneers project is an emulation of the Settlers of Catan board game which can be played over the internet.

Pioneers follows the rules of the award winning game by Klaus Teuber as closely as possible.

You can play with up to 8 players over the internet, and an AI is included too. It includes the default boards, and SeaFarers too.

DeVeDe project creates video DVDs, suitables for home players.

DeVeDe can create video DVDs from any number of video files, in any of the formats supported by Mplayer.

The big advantage over other utilites is that it only needs Mplayer, Mencoder, DVDAuthor y MKisofs, so its dependencies are really small.

SFLphone is a Voice over IP telephony software.
Voice over IP tends to be part of more and more corporate (and home) networks today.
As Open Source Software become more and more popular in companies, we decided to provide the community with a new powerful and open platform for desktop-based Voice over IP. SFLphone aims to become your desktops VoIP companion.
Main features:
- SIP and STUN support ;
- OSS and ALSA (since 0.3) audio devices support ;
- Skinned GUI ;
- G711u, G711a PCM, and GSM (since 0.3) codecs ;
- And nice other features !

mod_coredumper uses the CoreDumper library from Google to fetch a GDB compatible core file from Apache, over HTTP.

Warning: Do not enable mod_coredumper on a public server without access control in place!

This module allows a remote user to possibly download passwords or other sensitive information stored inside Apache.