Free block icmp echo 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.

ICMP-Chat is a simple console-based chat that uses ICMP packets for communication. All the data is encrypted with Rijndael-256 algorithm.
Installation:
Type: make && make install
For solaris type: make solaris && make install
Usage:
Usage: icmpchat [OPTIONS] < host > < nick >
< host > = Host to chat with
< nick > = Your nickname
OPTIONS:
-t < type > = specify icmp type (default ECHO_REPLY)
Example: icmpchat 192.168.1.2 foo
ICMP codes:
[0] Echo Reply
[5] Redirect
[8] Echo Request
[9] Router advertisement
[10] Router solicitation
[13] Timestamp request
[14] Timestamp reply
[15] Information request
[16] Information reply
[17] Adressmask request
[18] Adressmask reply
Enhancements:
- Rewrote from scratch
- Implemented optimized rijndael algorithm
- Implemented sha256 for password hashing
- Implemented ncurses frontend (again)
- Fixed getuid problem so that setting suid flag works now (thanks John)

NetPacket::ICMP is a Perl module to assemble and disassemble ICMP (Internet Control Message Protocol) packets.

SYNOPSIS

use NetPacket::ICMP;

$icmp_obj = NetPacket::ICMP->decode($raw_pkt);
$icmp_pkt = NetPacket::ICMP->encode();
$icmp_data = NetPacket::ICMP::strip($raw_pkt);

NetPacket::ICMP provides a set of routines for assembling and disassembling packets using ICMP (Internet Control Message Protocol).

Methods

NetPacket::ICMP->decode([RAW PACKET])
Decode the raw packet data given and return an object containing instance data. This method will quite happily decode garbage input. It is the responsibility of the programmer to ensure valid packet data is passed to this method.

NetPacket::ICMP->encode()
Return an ICMP packet encoded with the instance data specified.

Host enumeration is the act of determining the IP address of potential targets on a network. This can be done in both layer 2 and layer 3. Icmpenum project can send ICMP traffic for such enumeration.

The ICMP packets supported are: Echo, Timestamp, Information and Netmask. Furthermore, it supports spoofing and promiscuous listening for reply packets. Icmpenum is great for enumerating networks which allow ICMP traffic.

Icmpenum sends ICMP traffic to potential targets on a network.
Introduction:
Host enumeration is the act of determining the IP address of potential targets on a network. This can be done in both layer 2 and layer 3. Icmpenum sends ICMP traffic for such enumeration. The ICMP packets supported are: Echo, Timestamp, Information and Netmask. Furthermore, it supports spoofing and promiscuous listening for reply packets. Icmpenum is great for enumerating networks which allow ICMP traffic.
Installation:
1. Install the latest libpcap (libpcap 0.4, ftp://ftp.ee.lbl.gov/libpcap.tar.Z).
2. Install the latest Libnet (http://www.packetfactory.net/libnet/).
3. Compile icmpenum as follows:
gcc `libnet-config --defines` -o icmpenum icmpenum.c -lnet -lpcap
4. Copy icmpenum to your fave directory and (as root) start enumerating.
Usage:
Running icmpenum -h gives you the following screen:
# ./icmpenum -h
USAGE: ./icmpenum [opts] [-c class C] [-d dev] [-i 1-3] [-s src] [-t sec] hosts
opts are h n p r v
-h this help screen
-n no sending of packets
-p promiscuous receive mode
-r receiving packets only (no
-v verbose
-c class C in x.x.x.0 form
-i icmp type to send/receive, types include the following:
1 echo/echo reply (default)
2 timestamp request/reply
3 info request/reply
-d device to grab local IP or sniff from, default is eth0
-s spoofed source address
-t time in seconds to wait for all replies (default 5)
host(s) are target hosts (ignored if using -c)
Examples:
Here are some example uses of icmpenum to enumerate hosts.
Example 1:
[Host1]# icmpenum 192.168.1.1 192.168.1.2
This will use the default of Echo packets to try and determine if
192.168.1.1 and 192.168.1.2 are up and running.
Example 2:
[Host1]# icmpenum -i 2 -v 192.168.100.100 192.168.100.200
This will enumerate the two hosts using Timestamp packets in
verbose mode.
Example 3:
[Host1]# icmpenum -i 3 -s 10.10.10.10 -p -v 192.168.1.1 192.168.1.2
This will enumerate hosts 192.168.1.1 and 192.168.1.2 using
Information packets with a spoofed address of 10.10.10.10, since our real address is 10.10.10.11 we use the -p option to listen for the replies.
Here are some more advanced uses of icmpenum.
Example 4:
Assuming Host1 is 6.6.6.6 and Host2 is 7.7.7.7, and that the network 1.1.1.0 has potential hosts to enumerate, we use the following two entries to enumerate with Information packets:
[Host2]# icmpenum -r -t 30 -i 3 -c 1.1.1.0
[Host1]# icmpenum -s 7.7.7.7 -i 3 -c 1.1.1.0
Host2 starts first in receive mode with a timeout of 30 seconds and starts listening for Information packets from the 1.1.1.0 network. Then Host1 starts sending spoofed packets with Host2 as the source address, sending exactly what Host2 is listening for. It should be noted that this is hardly stealthy, as logs at 1.1.1s site could have 7.7.7.7s address all over them, but the -r function is good for testing.
Example 5:
Assuming Host1 is 6.6.6.6 and Host2 is 7.7.7.7, and that Host2 can sniff traffic between 1.1.1.0 and 2.2.2.0, we use the following entries to enumerate the 1.1.1.0 network:
[Host2]# icmpenum -t 20 -n -p -i 2 -c 1.1.1.0
[Host1]# icmpenum -s 2.2.2.2 -i 2 -c 1.1.1.0
Host2 starts first with a timeout of 20 seconds, makes sure not to send the packets with the -n option, listens promiscuously for Timestamp packets from the 1.1.1.0 network. Host1 sends the exact packets Host2 is listening for with a 2.2.2.2 spoofed source address. Yes, one could simply replace the -n option in Host2s command line with -s 2.2.2.2 and do the same thing from one workstation, but were demonstrating a distributed concept.
Enhancements:
- I have added ICMP MASK (type 17 and 18) requests and replys. Simply use the -i 4 option on the command line, such as; icmpenum -i 4 -c 1.2.3.1 (sends ICMP MASK requests to the Class C range 1.2.3.1/24 and reports any system as.
- Due to the use of some older versions of Libnet and Libpcap. I can see problems for some people compiling this and hence have placed two statically linked versions within the tarball

Block Attack - Raise of the Blocks is another block fall game based on Tetris Attack.

Block Attack - Raise of the Blocks is a block fall game. Like Tetris Attack and Crack Attack, block are raising from the floor and the player must clear them before they touch the roof.

Blocks are cleared by making a line of three blocks in the same color horizontally or vertically, and blocks can only be changed horizontally.

The goal is to either get as much points as possible, get as much point in two minutes, clear all blocks in limited moves and clear a number of lines.

Two player slit screen is available. Two players can compete in Time Trial (who gets most points in two minutes) or Vs. mode where clearing more than 3 blocks trows blocks at the opponent.

Building Block ist the Open Source Content Management Software for your website. It is lightweight and has minimal hardware requirements.
At the same time it is powerful and delivers high performance. Building Blocks diversity allows you to create and manage professional web projects directly in your browser.
Enhancements:
- This initial release is stable and is recommended for production use on non-critical data.

Bio::NEXUS::Block is a Perl module that provides useful functions for blocks in NEXUS file (parent class).

SYNOPSIS

This module is the super class of all NEXUS block classes. It is not used specifically from a program; in other words, you dont create a new Bio::NEXUS::Block object. Other modules, like AssumptionsBlock, simply inherit subroutines from this module.

Provides a few useful functions for general blocks (to be used by sub-classes).

METHODS

clone

Title : clone
Usage : my $newblock = $block->clone();
Function: clone a block object (shallow)
Returns : Block object
Args : none

get_type

Title : get_type
Usage : print $block->get_type();
Function: Returns a string containing the block type
Returns : type (string)
Args : none

set_ntax

Title : set_ntax
Usage : print $block->set_ntax();
Function: Sets the value of Dimensions:ntax
Returns : none
Args : number of taxa (scalar)

set_dimensions

Title : set_dimensions
Usage : $block->set_dimensions($dimensions);
Function: set a dimensions command
Returns : none
Args : hash content of dimensions command

get_dimensions

Title : get_dimensions
Usage : $block->get_dimensions($attribute);
Function: get a dimensions command
Returns : hash content of dimensions command, or the value for a particular attribute if specified
Args : none, or a string

set_command

Title : set_command
Usage : $block->set_command($command, $content);
Function: Set a command
Returns : none
Args : comand name, and content (string)

set_title

Title : set_title
Usage : $block->set_title($name);
Function: Set the block name
Returns : none
Args : block name (string)

get_title

Title : get_title
Usage : $block->get_title();
Function: Returns a string containing the block title
Returns : name (string)
Args : none

set_link

Title : set_link
Usage : $block->set_link($link_hashref);
Function: Set the block link commands
Returns : none
Args : block link (hash)

add_link

Title : add_link
Usage : $block->add_link($linkname, $title);
Function: add a link command
Returns : none
Args : $link, $title (of another block)

get_link

Title : get_link
Usage : $block->get_link();
Function: Returns a hash containing the block links
Returns : link (hash)
Args : none

set_taxlabels

Title : set_taxlabels
Usage : $block->set_taxlabels($labels);
Function: Set the taxa names
Returns : none
Args : array of taxa names

add_taxlabel

Title : add_taxlabel
Usage : $block->add_taxlabel($label);
Function: add a taxon name
Returns : none
Args : a taxon name

get_taxlabels

Title : get_taxlabels
Usage : $block->get_taxlabels();
Function: Returns an array of taxa labels
Returns : taxa names
Args : none

set_otus

Title : set_otus
Usage : $block->set_otus($otus);
Function: sets the list of OTUs
Returns : none
Args : array of OTUs

get_otus

Title : get_otus
Usage : $block->get_otus();
Function: Returns array of otus
Returns : all otus
Args : none

set_otuset

Title : set_otuset
Usage : $block->set_otuset($otuset);
Function: Set the otus
Returns : none
Args : TaxUnitSet object

get_otuset

Title : get_otuset
Usage : $block->get_otuset();
Function: get the OTUs
Returns : TaxUnitSet object
Args : none

select_otus

Title : select_otus
Usage : $block->select_otus($names);
Function: select a subset of OTUs
Returns : array of OTUs
Args : OTU names

rename_otus

Title : rename_otus
Usage : $block->rename_otus($names);
Function: rename all OTUs
Returns : none
Args : hash of OTU names

set_comments

Title : set_comments
Usage : $block->set_comments($comments);
Function: Set the block comments
Returns : none
Args : block comments (array of strings)

get_comments

Title : get_comments
Usage : $block->get_comments();
Function: Returns block comments
Returns : comments (array of strings)
Args : none

add_comment

Title : add_comment
Usage : $block->add_comment($comment);
Function: add a comment
Returns : none
Args : comment (string)

equals

Name : equals
Usage : $block->equals($another);
Function: compare if two Block objects are equal
Returns : boolean
Args : a Block object