Difference between revisions of "Monitoring"
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| + | ==Check Firewall== | ||
| + | |||
| + | * UDP | ||
| + | <pre> | ||
| + | [ ~]$ nc -v -u -z -w 3 targethost 25826 | ||
| + | Ncat: Version 7.50 ( https://nmap.org/ncat ) | ||
| + | Ncat: Connected to 192.168.1.2:25826. | ||
| + | Ncat: UDP packet sent successfully | ||
| + | Ncat: 1 bytes sent, 0 bytes received in 2.03 seconds. | ||
| + | [ ~]$ nc -v -u -z -w 3 targethost 25828 | ||
| + | Ncat: Version 7.50 ( https://nmap.org/ncat ) | ||
| + | Ncat: Connected to 192.168.1.2:25828. | ||
| + | Ncat: Connection refused. | ||
| + | </pre> | ||
| + | |||
===WAN monitoring - Ethernet OAM - Y.1731=== | ===WAN monitoring - Ethernet OAM - Y.1731=== | ||
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Essentially a formalised version of Cisco SAA probes | Essentially a formalised version of Cisco SAA probes | ||
You really want to use the two way delay probes but this requires hardware at both ends with accurate clocks and support for it. | You really want to use the two way delay probes but this requires hardware at both ends with accurate clocks and support for it. | ||
| + | |||
| + | |||
| + | ==LibreNMS== | ||
| + | |||
| + | Generate an Alarm (aka re-raise it) | ||
| + | ./test-alert.php -r 8 -d -h host | ||
| + | |||
| + | Validate Transport logic but doesnt send anything | ||
| + | ./test-template.php -t 0 -h host -r 8 -d | ||
Latest revision as of 21:42, 2 June 2020
Check Firewall
- UDP
[ ~]$ nc -v -u -z -w 3 targethost 25826 Ncat: Version 7.50 ( https://nmap.org/ncat ) Ncat: Connected to 192.168.1.2:25826. Ncat: UDP packet sent successfully Ncat: 1 bytes sent, 0 bytes received in 2.03 seconds. [ ~]$ nc -v -u -z -w 3 targethost 25828 Ncat: Version 7.50 ( https://nmap.org/ncat ) Ncat: Connected to 192.168.1.2:25828. Ncat: Connection refused.
WAN monitoring - Ethernet OAM - Y.1731
- https://app.netrounds.com/static/2.26/support/task-types/refl/y1731-eth-slm.html
- https://www.cisco.com/c/en/us/support/docs/asynchronous-transfer-mode-atm/operation-administration-maintenance-oam/117457-technote-cfm-00.html
- https://www.juniper.net/documentation/en_US/junos/topics/topic-map/oam-service-overview.html
Essentially a formalised version of Cisco SAA probes You really want to use the two way delay probes but this requires hardware at both ends with accurate clocks and support for it.
LibreNMS
Generate an Alarm (aka re-raise it)
./test-alert.php -r 8 -d -h host
Validate Transport logic but doesnt send anything
./test-template.php -t 0 -h host -r 8 -d
