Monitoring FTP Server via an FTP Probe

This sample is very similar to the Ping Probe and Port Probe samples. Thus, we describe it briefly, only.

FTP Probe is used to make a connection to the FTP server. Then it receives the response from FTP server and sends the QUIT command to terminate the connection. The connection status is saved in the property ftpstatus and the response in the property ftprespmsg.

In our sample, we probe a FTP server, which typically listens to port 21 (the default port for FTP). We send an email alert if the FTP probe cannot connect successfully to the FTP server.

Because this sample is so close to the previous ones, we do not create a new rule set specifically for email alerting. Please view “Ping Probe” for it. This is a good sample of rule set re-use. If necessary rename the rule set in such a case. For simplicity reasons, we have not done this here.

Therefore, we begin by creating the new service, done by right-clicking “Services”:

../_images/monitoringftpserver_001.png

Monitoring FTP Server via an FTP Probe - Figure 1

After doing so, select the newly created service in the tree view to look at its properties. Be sure to bind it to the “FTP Probe” rule set as seen below:

../_images/monitoringftpserver_002.png

Monitoring FTP Server via an FTP Probe - Figure 2

Save the configuration and restart the service. From now on, the following mail alert is generated when the port cannot be connected to:

Event message:
Facility: 16
Priority: 6
Source: 192.168.1.1

Message:
FTPProbe status="fail" target="192.168.1.1" port="21" netstate="10061"
message="Couldn't connect to host"