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Products :: Sentry-go Plus! :: TCP/IP Port Monitoring
  
 
Sentry-go Monitoring for Windows   TCP/IP Port Monitoring
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The Sentry-go Plus! TCP/IP monitor allows you to periodically verify that access to well-known TCP/IP listen ports can be established on the local server. In addition, data can be sent to and analysed from an established connection, thus ensuring the correct protocol is being performed. Well known ports include Web (HTTP & HTTPS), SMTP, POP3, IMAP4, DNS & WINS etc., although any port, including custom ports can be monitored. If a connection cannot be established or the data returned does not match expected results, automatic action can be taken and/or alerts raised.
   
  Facts & Features
 
In order to function, web-based servers and services listen for inbound requests via TCP/IP ports. If the service is not listening on it's standard (or so-called "well known") port, external access to that service will be unavailable.
 
TCP/IP Port Monitoring
 

For example, if IIS is not listening on port 80, standard browser requests to it will result in an error, while SMTP e-mail servers normally listen on port 25 etc.

Using the Sentry-go Plus! Port Monitor, you can not only verify that the underlying service is available, but also check to see whether the service is working correctly and waiting for inbound requests by sending an initial request and/or waiting for it's response on the appropriate port.

If it isn't, the underlying system can either be restarted, or the webmaster or System Administrator(s) notified as required.
 

  Key Features
  

Sentry-go Plus! TCP/IP Port Monitoring Component Sentry-go Plus! TCP/IP Port Monitoring Component

Monitoring Features : - Ensure TCP/IP port access is available 
- Optionally ensure the listening server returns the 
  correct data
- Optionally send opening data to the listening server
Periodic Monitoring : Monitoring Feature
Scheduled Monitoring :   
Local Monitoring : Monitoring Feature  
Alerting Features : Perform automatic response, notify Administrator(s)
Web Reporting : Recent alerts, current status - see example.
Sentry-go Plus! Monitor Version : 1.0
Configure : Local or remote via Client Console
External Software Requirements : None
Available Monitoring Options : Monitor Network Status
Monitor Available disk space
Monitor Software/Hardware Performance
Monitor Windows Services
Monitor Windows Processes
Monitor Windows Event Logs
Monitor text-based Log Files
Monitor Files & Directories
Monitor Printers & Print Queues
Monitor FTP Access & availability
Monitor HTML (HTTP) Content & availability
Monitor TCP/IP Port Availability
Monitor E-mail Send/Receive
Monitor database connection & query
Monitor SQL Server Locking
Downloads & Links :

Why monitor TCP/IP port availability ? (PDF)
Monitoring TCP/IP port availability (PDF)
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