[TOOL] Skeeve - Software For Creating Cover Channel With ICMP Tunnel

From: SecuriTeam (support_at_securiteam.com)
Date: 01/25/05

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    Date: 25 Jan 2005 18:44:28 +0200

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      Skeeve - Software For Creating Cover Channel With ICMP Tunnel



    With this Proof Of Concept tool, you can 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

    How it works:
    Skeeve creates an ICMP tunnel which is based on the use of a Bounce

    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.

    Download Information:
    The tool can be obtained from:


    To keep updated with the tool visit the project's homepage at:


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