John Halperin produced the scan of port 80 using the following methodology (extracted from a mail message).
The programs are in ~jxh/pgms/x/xchkaccess/
- make.typesfile.sh builds a file with all the architectures listed in the 'nodes' flatfile (/usr/local/scs/net/cando/computer.lis).
- make.hostsfile.pl is run once for each architecture found in (1), and makes a file of all hosts of that architecture having an IP addr (also from the 'nodes' flatfile).
- runbunch.sh spins off xchkaccess jobs, one per architecture, with the hosts passed in the (humongous) arg list.
Source for xchkaccess is xchkaccess.c in the same directory. The xchkaccess binaries are at /nfs/juno/u20/netdata/net/bin/xchkaccess.$ARCHNAME