Vsimd stands for Very Simple Interface Monitoring Daemon. Vsimd's goal is to provide a simple ICMP-ECHO-based infrastructure on top of which monitoring tools can be built. Vsimd periodicaly sends ICMP ECHO requests to a set of internet hosts, waits for the replies and then reports the result as text output. One may write fancy display interfaces on top of vsimd. There is a small sample utility written in Perl and called 'webgen' which can read vsimd output and issue a Web page. Simply instruct webgen to send such output to your Web server document tree, and you have a poor-man's ping monitor.