Error Type 2:Device not accepting TCP connections
If Red Alert cannot open a TCP connection to a device, it tries to ping the device. If the ping is successful, then Error Type 2 is reported to you. (See the description of Error Type 1 for what happens if the ping is not successful.)
NOTE: Some Internet devices reside behind firewalls which do not pass ping requests. Red Alert can still monitor these devices, and will simply report Error Type 1 (or Error Type 6, if applicable) whenever a TCP connection cannot be opened.
All error conditions are triple-checked before notifications are sent to you.
How to Use
There is no way to deactivate monitoring for Error Type 2. To activate or deactivate notifications about this error type, follow the "Change Notification Options" link on your Account Summary Page.
If you are receiving notifications of Error Type 2 for a device, but the device is operating properly, then its IP address may have changed since you registered it with Red Alert. Simply follow the EDIT link for that device on your Account Summary Page, and re-submit the form (no editing required). This will cause Red Alert to look up the device's new IP address. The IP address which Red Alert is currently using for a device appears in all email and pager notifications sent.