TCP SYN Keep-Alive
Caution
- This Router App has been tested on a router with firmware version 6.3.10. After updating the router firmware to a higher version, check whether a newer version of the Router App has also been released and update it accordingly for compatibility.
Description
This Router App checks the functionality of a TCP connection with a defined IP address on a specified TCP port. The connection check is performed regularly at a configured interval. Failed connection attempts are logged, and when the preset failure limit is exceeded, the WAN connection is restarted.
The Router App web interface is accessible by clicking the Router App name on the Router Apps page of the router's web interface. The left menu contains Status (with monitoring pages), Configuration, and Customization (with Return to go back to the router's interface).
Web Interface
Overview
The Overview page under the Status section displays information about the current activity of the Router App.
Global
The Router App is configured via the Global form. The Enable TCP SYN Keep-Alive service checkbox at the top activates the Router App. The remaining configuration items are described in the table below:
| Item | Description |
|---|---|
| IP address | IP address on which the TCP connection is checked. |
| TCP port | Port number used for the connection check. |
| Period | Interval between connection checks, in minutes. |
| Max. failure | Maximum number of consecutive failures before the WAN connection is restarted. |
Configuration items
Click Apply to apply all changes.
