use IO::Socket;

my $server = IO::Socket::INET->new(
    LocalPort => 2005,
    type => SOCK_STREAM,
    Reuse => 1,
    Listen => 10
)
    or die "Server läuft nicht: $@\n";

while (my $client = $server->accept()) {
    print "Anfrage\n";
}
close($server);