Free multithread network port scanner software for linux

Just Another Port Scanner (JAPS) is an easy to use, bare-bones TCP port scanner. JAPS requires the GTK+ library to run. I created JAPS because I felt it would be a fun project and I wanted to learn GTK+ programming basics.

To compile an install JAPS just type make.

Todo
Add subnet scanning
Add progress bar
Display service name next to port number in results box
If you have any suggestions please contact me. 1

Multi Purpose Scanner is a simple scanner written in C that starts a number of child processes, connects to a list of IP addresses, and logs a certain number of characters to standard out or a file.
Low band use is one consecuence of a single connection per child that recieve an only defined num of characters.
Main features:
- $ mpscan -e -p 25 -t 15 -r 100 -T 20 -R 192.168.1.0-10
- Fast mp-scan 0.04-testing ...
- Total ip: 11
- 11/11 91% 192.168.1.10
- Generated 11 ip in 0.199 seconds
- Ip range parsed... 11 ip found
- Scan on 25 started...
- 0:192.168.1.0 -> Network is unreachable
- 3:192.168.1.3 -> Connection refused
- 2:192.168.1.2 -> Connection refused
- 1: 192.168.1.1 -> 220 zeus.olimpo.hm ESMTP Postfix (Debian/GNU)
- 6:192.168.1.6 -> No route to host
- 5:192.168.1.5 -> connected but no data retrived within 7 sec
- 4:192.168.1.4 -> No route to host
- 8:192.168.1.8 -> connect timeout after 15
- 7:192.168.1.7 -> No route to host
- 9:192.168.1.9 -> No route to host
- 10:192.168.1.10 -> No route to host
- Waiting for child dead...
- Scanned 10 ip in 3.14821 seconds
- Scan ended... enjoy the result
Enhancements:
- added T and I option,
- added changelog,
- added debian rules,
- added man page,
- Makefile created.

Port Scanner provides a tool to check for open ports.

Port Scanner will try to connect on every port you define for a particular host. If a connection is made, it will try to read any data returned.

This product is intended for individuals to test their own equipment for weak security, and the author will take no responsibility if it is put to any other use.

Amazon sell many books on Security that will enhance your ability to keep your computer secure.

The Windows version has been withdrawn. Apologies for this, but it is too popular and uses my bandwidth up too quickly. If anyone want to host the binary for me, I will happily post a link here. It should also be possible to compile Version 2.1 for Windows.

Whats New in this release:

.(QT) Takes multiple port ranges.
.Minor bugfixes.

Dell 1600n network scanner driver is a driver for network scanning using a Dell 1600n Printer/Scanner/Fax/Copier.
It is implemented as a Perl script. In principle, this means that it should be cross-platform.
It has been tested under Linux (Debian) and Windows (NT4 with Cygwin) on Intel. Supported formats are TIFF and JPEG. With an external program (e.g. ImageMagick convert), PDF is supported.
Main features:
- TIFF and JPEG network scanning using a Dell 1600n MFP.
- PDF scanning support via an external program (eg: ImageMagick convert)

Skipole Network Monitor project is a simple network monitor with built in web server.

It allows the user to input host IP addresses, it then pings these hosts every five minutes and displays their status via a built-in web server, on port 8000.

So calling http://your_pc_address:8000 will display pages showing green, yellow or red host or group symbols.

Each host is pinged four times every five minutes, and symbols are displayed as:

green : if three or four pings are successfull
yellow : if only one or two are successfull
red : if all four fail

As well as hosts, group symbols are displayed, and can be opened to show hosts, or sub-groups nested within. The operator can create groups, and sub-groups via the gui.

onesixtyone is an efficient SNMP scanner which utilizes a sweep technique to achieve extreme performance. The SNMP protocol is a stateless, datagram oriented protocol. An SNMP scanner is a program that sends SNMP requests to multiple IP addresses, trying different community strings and waiting for a reply. Unfortunately SNMP servers dont respond to requests with invalid community strings and the underlying UDP protocol does not reliably report closed UDP ports. This means that no response from the probed IP address can mean either of the following:
machine unreachable
SNMP server not running
invalid community string
the response datagram has not yet arrived
The approach taken by most SNMP scanners is to send the request, wait for n seconds and assume that the community string is invalid. If only 1 of every hundred scanned IP addresses responds to the SNMP request, the scanner will spend 99*n seconds waiting for replies that will never come.
Thats why traditional SNMP scanners are very inefficient.
onesixtyone takes a different approach to SNMP scanning. It takes advantage of the fact that SNMP is a connectionless protocol and sends all SNMP requests as fast as it can. Then the scanner waits for responses to come back and logs them, in a fashion similar to Nmap ping sweeps. By default onesixtyone waits for 10 milliseconds between sending packets, which is adequate for 100Mbs switched networks. The user can adjust this value via the -w command line option. If set to 0, the scanner will send packets as fast as the kernel would accept them, which may lead to packet drop.
Running onesixtyone on a class B network (switched 100Mbs with 1Gbs backbone) with -w 10 gives us a performance of 3 seconds per class C, with no dropped packets. All 65536 IP addresses were scanned in less than 13 minutes.
onesixtyone sends a request for the system.sysDescr.0 value, which is present on almost all SNMP enabled devices. This returned value gives us a description of the system software running on the device. Here is an excert of a log file:
192.168.120.92 [1234] HP ETHERNET MULTI-ENVIRONMENT,ROM A.05.03,JETDIRECT,JD24,EEPROM A.05.05
130.160.108.146 [public] Hardware: x86 Family 15 Model 0 Stepping 10 AT/AT
COMPATIBLE - Software: Windows 2000 Version 5.0 (Build 2195 Uniprocessor Free)
192.168.112.64 [public] Power Macintosh, hardware type 406; MacOS 9.0; OpenTransport 2.5.2
192.168.104.254 [public] Novell NetWare 4.11 August 22, 1996
192.168.112.83 [public] Macintosh Quadra 650, System Software 7.1
192.168.244.210 [public] RICOH Aficio 850 / RICOH Network Printer D model
192.168.240.39 [public] Cisco Systems WS-C5000
192.168.244.103 [public] HPJ3210A AdvanceStack 10BT Switching Hub Management Module, ROM A.01.02, EEPROM A.01.01, HW A.01.00
Enhancements:
- fixed version number and added a Makefile

lisp-network-server is a simple framework for writing Common Lisp network applications.

lisp-network-server framework takes care of listening on the network, accepting the connection and starting a new thread with handler functions of your network aware application.

Update Scanner provides an extension which monitors web pages for updates.

Right-click on any page, and select "Scan Page for Updates".

You can choose how often the site will be checked for changes, and whether to ignore minor updates.

When a change is detected, a notification window is displayed. Click the blue up-arrow on the bottom status bar to show the Update Scanner sidebar. Webpages that have been updated are shown in bold.

Double-click any item to open the website.