scanssh: ScanSSH (protocol scanner)
scanssh:  
scanssh: ScanSSH supports scanning a list of addresses and networks for open
scanssh: proxies, SSH protocol servers, Web and SMTP servers. Where possible
scanssh: ScanSSH, displays the version number of the running services.
scanssh: ScanSSH protocol scanner supports random selection of IP addresses
scanssh: from large network ranges and is useful for gathering statistics on
scanssh: the deployment of SSH protocol servers in a company or the Internet
scanssh: as whole.
scanssh: 
scanssh: http://monkey.org/~provos/scanssh/