IPSec VPN scanning, fingerprinting and testing tool.
Ike-scan is a command-line tool that uses the IKE protocol to discover, fingerprint and test IPSec VPN servers. It is available for Linux, Unix, MacOS and Windows under the GPL license.
This will compile on Unix and Linux systems as well as Windows systems with Cygwin. You will need a C compiler, the "make" utility and the appropriate system header files to compile ike-scan. It uses autoconf and automake, so compilation and installation is the normal ./configure; make; make install process.
This is a zip file containing a Win-32 binary version of ike-scan together with the Cygwin DLL which provides posix support. It runs on Win-9x, NT, 2000 and XP. The executable was produced by compiling the ike-scan source on a Windows system running Cygwin.
Previous versions of ike-scan are available here
If you want an older version of the ike-scan software, you can get it from here. You can also obtain any version of the source code, together with the revision history from the github link above.
Other pre-compiled packages: ike-scan is also available as a pre-compiled package for many other systems. The installation section of the ike-scan wiki contains details of the packages that I am aware of.
The ike-scan wiki is the main source of documentation for ike-scan.
There are also Unix manpages included with the source distribution, which provide basic documentation on the usage and available options.