Getting passive FTP connections to work through a firewall properlyby Wojjie (2004-06-16)
So you installed a firewall, but it seems to have crippled passive ftp connections. Your clients are complaining of timeouts and lagging performance of the FTP server. All these are signs that you did not configure your firewall and FTP server properly for passive FTP connections.
Setting up SIM (System Integrity Monitor)by Wojjie (2004-06-20)
SIM (System Integrity Monitor) is a useful tool to monitor and ensure that services are running and responding. SIM can also be used to monitor system resources, and setup to send you email alerts.