Strobe-classb is a high-speed Linux network scanner that is compact and efficient.
Included with strobe-classb is RH5.0-5.2-patchscript, which fixes a problem in RedHat 5.0 to 5.2's relaying rulesets. The program also includes relay-check.pl, which serves as an example of how to use strobe-classb to scan your network regularly to detect spam relays. After noting any issues, you can use list-hosts.pl to sort and notify individual network admins.
Overall, strobe-classb serves as a great security scanner for those interested in detecting potential network threats. While it may not be suitable for everyone, the software does come with brief documentation for each perl script. These scripts are recommended specifically for use with a Pentium-class computer on 10Mbps ethernet and with decent bandwidth WAN to all hosts being scanned.
The latest release also includes several changes to the perl script for 2.2 kernels, as well as two different relay checks instead of just one. This allows for better detection of relays that aren't "obviously open" but are still open.
In summary, if you're looking for a reliable network scanner for Linux, strobe-classb is definitely worth considering. Just be sure to review the documentation and meet the program requirements before getting started.
Version 1.8: N/A