Free tools software for linux

cdp-tools is a software that provides tools to work with the Cisco Discovery Protocol (CDP).
They were written because of a particular hosting center that insisted on learning routes using CDP, and thusly required Cisco Switches for doing their dirty work.
cdp-listen/cdp-routemgr are proof-of-concepts that may be useful if you want to implement a similarly brain-damaged proposal.
cdp-send is a must-have tool if you are in that situation. It can pretend to be just about any kind of Cisco hardware you can imagine.
The source is a bit difficult to follow as a requirement was that it build under both the ancient libnet and the new libnet code. hence, much nasty macro-ing.
Enhancements:
- DESCRIPTION, README: More docs...

VK Toolset project is intended to aide MPEG developers and hobbyist in understanding and creating conformant MPEG streams.
The current version focuses on the MPEG system layer (MPEG-1 System, MPEG-2 Program Stream), and MPEG-2 Transport bitstreams).
Enhancements:
vk_tafe
- UI changes to PCR Analysis screen
- New PTS/DTS graph (graphs PTS/DTS values against current PCR)
- UI log for STD buffer analysis
- Updated HTML documentation
- Target build platform updated to a "modern" distro -- SuSE 10. The older Mandrake version is frozen at version 0.8f which is still included in the VK-Tools packets
- Updated win32 port
view_knot_dump
- UI no longer depends on icons subdirectory to properly display
- If local .view_knot_view config does not specify the location of vk_tafe we assume its somewhere in the PATH and try to launc it
- Updated HTML documentation
- Target build platform updated to a "modern" distro -- SuSE 10. The older Mandrake version is frozen at version 0.8f which is still included in the VK-Tools packets
- Updated win32 port
- Removed Plugins. Theyve only been broken for 5 years now :)
view_knot_viewer
- No changes

Web-tools provides various tools which assist in adminstering a server.
Web-tools is a package that contains 15 shell scripts for use in administering UNIX servers. These tools make it easy to add and remove: VirtualHosts on Apache Web server, users on ProFTPD server, and primary/secundary zones on the named DNS server.
Here the scripts provided by "Web tools":
- adddns
- addftp
- addwebservice
- addwww
- chpass
- deldns
- delftp
- delwww
- dnsrecords
- functions
- genuser.pl
- delblanklines
- secundary
- updatezone
- zonecheck

Site Tools is a collection of Modules for perl that allow easy template integration, SQL forms creation, tables, sessions, and various other things that make web development a little easier to manage. Requires the SQLObject and PObject classes available on my project page. I have stopped developing these classes in favor of the Template Toolkit, it is a lot more robust and mod_perl aware, please use that instead.

To install everyhthing, follow the next instructions:

perl Makefile.PL
make
make test
make install

Basic documentation can be found through perldoc Site. It has pointers to other modules to look at.

HTB-tools is a project with several tools that help simplify the difficult process of bandwidth allocation, for both upload and download traffic: generate and check configuration files, real time traffic overview for each separate client.
Main features:
- bandwidth limitation using routable IP addresses, using the two configuration files for upload and download
- bandwidth limitation using non-routable IP addresses (SNAT), using a single configuration file
- match mark
- match mark in u32
- metropolitan/external limitation
- menu based management software for configuration and administration of HTB-tools (starting with version 0.3.0)
Enhancements:
- This release fixes compilation on newer kernels for q_show.c.
- The documentation has been updated.

flow-tools is a set of programs for processing and managing NetFlow exports from Cisco and Juniper routers. The tools included are: flow-capture, flow-cat, flow-dscan, flow-expire, flow-export, flow-fanout, flow-filter, flow-gen, flow-header, flow-import, flow-mask, flow-merge, flow-nfilter, flow-print, flow-receive, flow-report, flow-send, flow-split, flow-stat, flow-tag, and flow-xlate.

Flow data is collected and stored by default in host byte ordera nd the files are portable across every endian architectures.

Commands that utilize the network use a localip/remoteip/port designation for communication. "localip" is the IP address the host will use as a source for sending or bind to when receiving NetFlow PDUs (ie the destination address of the exporter. Configuring the "localip" to 0 will force the kernel to decide what IP address to use for sending and listen on all IP addresses for receiving. "remoteip" is the destination IP address used for sending or the expected address of the source when receiving. If the "remoteip" is 0 then the application will accept flows from any source address. The "port" is the UDP port number used for sending or receiving. When using multicast addresses the localip/remoteip/port is used to represent the source, group, and port respectively.

Flows are exported from a router in a number of different configurable versions. A flow is a collection of key fields and additional data. The flow key is {srcaddr, dstaddr, input, output, srcport, dstport, prot, ToS}. Flow-tools supports one export version per file.

Export versions 1, 5, 6, and 7 all maintain {nexthop, dPkts, dOctets, First, Last, flags}, ie the next-hop IP address, number of packets, number of octets (bytes), start time, end time, and flags such as the TCP header bits. Version 5 adds the additional fields {src_as, dst_as, src_mask, dst_mask}, ie source AS, destination AS, source network mask, and destination network mask. Version 7 which is specific to the Catalyst switches adds in addition to the version 5 fields {router_sc}, which is the Router IP address which populates the flow cache shortcut in the Supervisor. Version 6 which is not officially supported by Cisco adds in addition to the version 5 fields {in_encaps, out_encaps, peer_nexthop}, ie the input and output interface encapsulation size, and the IP address of the next hop within the peer. Version 1 exports do not contain a sequence number and therefore should be avoided, although it is safe to store the data as version 1 if the additional fields are not used.

Version 8 IOS NetFlow is a second level flow cache that reduces the data exported from the router. There are currently 11 formats, all of which provide {dFlows, dOctets, dPkts, First, Last} for the key fields.

8.1 - Source and Destination AS, Input and Output interface
8.2 - Protocol and Port
8.3 - Source Prefix and Input interface
8.4 - Destination Prefix and Output interface
8.5 - Source/Destination Prefix and Input/Output interface
8.9 - 8.1 + ToS
8.10 - 8.2 + ToS
8.11 - 8.3 + ToS
8.12 - 8.5 + ToS
8.13 - 8.2 + ToS
8.14 - 8.3 + ports + ToS

Version 8 CatIOS NetFlow appears to be a less fine grained first level flow cache.

8.6 - Destination IP, ToS, Marked ToS,
8.7 - Source/Destination IP, Input/Output interface, ToS, Marked ToS,
8.8 - Source/Destination IP, Source/Destination Port,
Input/Output interface, ToS, Marked ToS,

The following programs are included in the flow-tools distribution.

flow-capture - Collect, compress, store, and manage disk space for exported flows from a router.
flow-cat - Concatenate flow files. Typically flow files will contain a small window of 5 or 15 minutes of exports. Flow-cat can be used to append files for generating reports that span longer time periods.
flow-fanout - Replicate NetFlow datagrams to unicast or multicast destinations. Flow-fanout is used to facilitate multiple collectors attached to a single router.
flow-report - Generate reports for NetFlow data sets. Reports include source/destination IP pairs, source/destination AS, and top talkers. Over 50 reports are currently supported.
flow-tag - Tag flows based on IP address or AS #. Flow-tag is used to group flows by customer network. The tags can later be used with flow-fanout or flow-report to generate customer based traffic reports.
flow-filter - Filter flows based on any of the export fields. Flow-filter is used in-line with other programs to generate reports based on flows matching filter expressions.
flow-import - Import data from ASCII or cflowd format.
flow-export - Export data to ASCII or cflowd format.
flow-send - Send data over the network using the NetFlow protocol.
flow-receive - Receive exports using the NetFlow protocol without storing to disk like flow-capture.
flow-gen - Generate test data.
flow-dscan - Simple tool for detecting some types of network scanning and Denial of Service attacks.
flow-merge - Merge flow files in chronoligical order.
flow-xlate - Perform translations on some flow fields.
flow-expire - Expire flows using the same policy of flow-capture.
flow-header - Display meta information in flow file.
flow-split - Split flow files into smaller files based on size, time, or tags.

Burr Tools will help you solve a certain kind of puzzle.
Namely puzzles that are made out of square or dice shaped units and whose solution also contains only rectangular aligned pieces.
Main features:
- Does nearly all that PuzzleSolver 3D which is
- You can enter all puzzles that are assembled out of dice shaped units
- Find assemblies for you puzzle
- Disassemble the found assembly them
- Show everything in a 3 dimensional image
- Animate how the puzzle has to be assembled
- Toggle the visibility of pieces in the solution to have a look at the inner workings of a puzzle. This is especially helpful for box packing puzzles
- Runs on Windows and Linux and probably is also compilable on MacOS
- You can specify which cubes to fill and which can be empty or full. PuzzleSolver 3D has only 2 modes. Either all cubes may be left empty in the solution, or the cubes that have an empty neighbor must be filled. BurrTools are more flexible here.
- More than one problem in one file (e.g. have several Soma Cube problems in the same file)
- Constraints to piece placements (like checkerboard)
- Group pieces together to tell the disassembler that they dont need to be taken apart this is necessary for puzzles like "Cube In Cage" where the cage can not be taken apart but has 3 movable pieces
- No limits to sizes and number of shapes. As long as your computer has the memory and you the patience the program will do it for you, even if it takes eons.
- Free as in beer. It doesnt cost you anything
- Free as in speech. The source is available, so you can do your own programming or help me improve continue improving the program in case I have to stop working on it.
- Save puzzles with solutions in compressed XML-files. This allows you to create puzzles with other means (like your own burrgrower, ...)
- A library is provided that helps you to write your own software for puzzle design and analysis
Enhancements:
- Many bugs have been fixed.
- There are improvements to the build system.
- The manual has been edited.
- Performance has increased in some (rare) situations.
- There are editing possibilities in 3D view.