She took down a jar from one of the shelves as she passed; it was labelled `ORANGE MARMALADE', but to her great disappointment it was empty: she did not like to drop the jar for fear of killing somebody, so managed to put it into one of the cupboards as she fell past it. Lewis Carroll "Alice In Wonderland"
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With this Proof Of Concept tool, you can simply create an ICMP tunnel between two computers, which may be located in different networks and separated by a firewall. Skeeve utilizes ICMP packets and IP address spoofing technology to create a data channel in order to redirect TCP connections inside this channel. Skeeve creates an ICMP tunnel which is based on the use of a Bounce server. This method relies upon the basic IP address spoofing technology. The Client of the tunnel is trying to send a packet to the Bounce server with an address of the destination Server as a source IP. The Bounce Server can replay this packet and forward it to the destination Server. By adding some payload to the packet, we can establish a covert communication channel between two computers without direct network interaction. Skeeve Client accepts TCP connections and works as a converter of the IP header (by changing protocol flag from TCP to ICMP echo_request|reply and making some other slight modifications). Skeeve Server is doing the reverse procedure and restores original IP header settings. Both parts are implemented in one C program as a Loadable Kernel module.
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GNU General Public License GNU Free Documentation License |
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