![]() If all monitoring hosts of an interface do not respond during this time, the interface will be regarded as dead.The tabs of the Web Protection > Web Filtering menu allow you to configure Sophos UTM as an HTTP/S Hypertext Transfer Protocol Secure caching proxy. Timeout: Enter a maximum time span in seconds for the monitoring hosts to send a response. Interval: Enter a time interval in seconds at which the hosts are checked. If no URL is entered, the root directory will be requested. You can use other ports than the default ports 80 or 443 by adding the port information to the URL, e.g. URL (optional, only with monitoring types HTTP/S Host): URL to be requested. Port (only with monitoring types TCP and UDP): Port number the request will be sent to. If ping does not succeed or the ICMP port is unreachable, the connection is regarded as down. When using UDP a ping request will be sent initially which, if successful, is followed by a UDP packet with a payload of 0. Select either TCP ( TCP Transmission Control Protocol connection establishment), UDP ( UDP User Datagram Protocol connection establishment), Ping ( ICMP Internet Control Message Protocol Ping), HTTP Host ( HTTP Hypertext Transfer Protocol requests), or HTTPS Host ( HTTPS Hypertext Transfer Protocol Secure requests) for monitoring. Monitoring type: Select the service protocol for the monitor checks. Interfaces not covered by the selected hosts will be monitored by automatic monitoring.Ĭlick the Monitoring Settings icon in the box header to set the monitoring details: If a host is not bound to an interface, it will be used to monitor all interfaces. Note – If a selected host is bound to an interface, it will only be used to monitor this interface. How to add a definition is explained on the Definitions & Users > Network Definitions > Network Definitions page. If an interface is monitored by more than one host, it will only be regarded as dead if all monitoring hosts do not respond in the defined time span. Select or add one or more hosts that you want to use for monitoring instead of random hosts. The Monitoring hosts box becomes editable. Unselect the Automatic monitoring checkbox. To use your own hosts for monitoring, do the following: Note – Automatically, the same monitoring settings are used for both uplink monitoring ( Uplink Monitoring > Advanced) and uplink balancing ( Interfaces > Uplink Balancing). Subsequently, the actions defined on the Actions tab will be carried out. The monitoring hosts will then be contacted in certain periods and if none of them is reachable, the uplink connection is regarded as down. ![]() For these hosts you can select another service instead of ping, and modify the monitoring interval and timeout. ![]() However, you can define the hosts for monitoring the server pool yourself. By default, the monitoring host is the third ping-allowing hop on the route to one of the root DNS servers. This means that the health of all uplink interfaces is monitored by having them contact a specific host on the Internet at an interval of 15 seconds. On the Uplink Monitoring > Advanced tab you can disable automatic monitoring of the uplink connection and define one or more hosts instead which are used for monitoring.īy default, Automatic monitoring is enabled to detect possible interface failures. ![]()
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