. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 4 Java gateway . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1352 12 Database error handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . can define very flexible problem thresholds, called triggers, referencing values from the backend database Highly configurable alerting • sending notifications can be customized for the escalation schedule

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 4 Java gateway . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1257 14 Database error handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . can define very flexible problem thresholds, called triggers, referencing values from the backend database Highly configurable alerting • sending notifications can be customized for the escalation schedule

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 5 Java gateway . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . can define very flexible problem thresholds, called triggers, referencing values from the backend database Highly configurable alerting • sending notifications can be customized for the escalation schedule stored in a database • configurable history • built-in housekeeping procedure Easy configuration • add monitored devices as hosts • hosts are picked up for monitoring, once in the database • apply templates

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 5 Java gateway . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1542 12 Database error handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . can define very flexible problem thresholds, called triggers, referencing values from the backend database Highly configurable alerting • sending notifications can be customized for the escalation schedule

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 5 Java gateway . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 909 13 Database error handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . can define very flexible problem thresholds, called triggers, referencing values from the backend database Highly configurable alerting • sending notifications can be customized for the escalation schedule

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 5 Java gateway . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1376 15 Database error handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . can define very flexible problem thresholds, called triggers, referencing values from the backend database Highly configurable alerting • sending notifications can be customized for the escalation schedule

inside Inside device 3 wireguard-vpn-site2site Site-to-site 3 wireguard-vpn-defaultgw Default gateway 3 wireguard-vpn-other-tasks Other tasks 3 wireguard-vpn-security Security tips 3 wireguard-vpn-troubleshooting WireGuard VPN Introduction Peer to site Introduction On router Inside device Site to site Default gateway Other tasks Security tips Troubleshooting Virtualization Virtual machines (VMs) QEMU Create VMs * dhcp: for automatic IP configuration static dhcp (default 'dhcp'): static ip: 10.222.111.24 gateway (default 10.222.111.1): . dns (default .): vlan id (optional): http://cdimage.ubuntu.com/ubuntu/releases/20

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 5 Java gateway . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1719 14 Database error handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . can define very flexible problem thresholds, called triggers, referencing values from the backend database Highly configurable alerting • sending notifications can be customized for the escalation schedule

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 4 Java gateway . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1123 14 Database error handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . can define very flexible problem thresholds, called triggers, referencing values from the backend database Highly configurable alerting • sending notifications can be customized for the escalation schedule

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 5 Java gateway . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1805 14 Database error handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . can define very flexible problem thresholds, called triggers, referencing values from the backend database Highly configurable alerting • sending notifications can be customized for the escalation schedule