Still keeping it fairly simple, how about something like this: 
#!/usr/bin/perl -w
use strict;
use Net::Ping;

my $test_host = 'www.google.com';
my $sleepy_time = 30;

print "Network Monitor started at ",
      scalar localtime,
      ". (Testing $test_host every $sleepy_time seconds)\n";

my $p = Net::Ping->new();

while (1) {
    sleep $sleepy_time;
    next if $p->ping($test_host);
    print "$test_host appears to be down at ", scalar localtime, "\n";
}

[download]

If you wanted to do this properly, then there are plenty of (open source) off-the-shelf Network Monitoring Systems available. Big Brother is one that I have used and would recommend.

Cheers,
Darren :)

In reply to Re: Need help writing a basic network monitor. by McDarren
in thread Need help writing a basic network monitor. by Anonymous Monk

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