topic Re: VPN Monitoring due to disconnections. in OpenTelemetry/Skyline

VPN Monitoring due to disconnections.

Zee — Wed, 28 Jan 2026 15:50:28 GMT

Hi,
We are facing multiple issues related to VPN in our infrastructure for months and CheckPoint is unfortunately unable to resolve it till now. The issue is mainly related to random VPN disconnections from One site to our HQ and all other firewalls do not have any issues. To monitor it, and to reset the tunnel when issue is seen, we are using SNMP for VPN alerts but it is not entirely reliable as sometime the tunnel shows UP but the traffic from our problematic site does not reach HQ and vice versa but it is entirely random. I wanted to ask if there is any possibility to have an alert on Grafana via SKYLINE , which can verify if VPN traffic between these two sites is successful or not irrespective of the VPN tunnel state. VPN from problematic site has VPN tunnels with other sites as well (mesh), so I wanted to have a dedicate alert between these two sites. It would be helpful if someone has configured such alerts on Grafana. Thank you.

Re: VPN Monitoring due to disconnections.

Vincent_Bacher — Wed, 28 Jan 2026 16:49:18 GMT

Hi,

from my perspective afaik with Skyline alone this is currently not possible. Skyline mainly provides tunnel state and related metrics, but it cannot verify whether actual VPN traffic is successfully passing between two specific sites. Therefore, you cannot reliably alert on real connectivity issues when the tunnel still shows UP.

If you are exporting Skyline metrics to Prometheus, I guess you can then implement synthetic traffic checks using Prometheus Blackbox Exporter.

This allows you to actively test ICMP or TCP connectivity to a target that is only reachable through the VPN and alert on real traffic failure, independent of tunnel state.

Re: VPN Monitoring due to disconnections.

Tal_Paz-Fridman — Wed, 28 Jan 2026 17:08:13 GMT

Please look at two options:
sk181994 How to monitor the status of VPN Network Probes in R82 and higher
https://support.checkpoint.com/results/sk/sk181994

R82.10 Logging and Monitoring Administration Guide (applies to older versions as well)
Monitoring VPN Tunnels
https://sc1.checkpoint.com/documents/R82.10/WebAdminGuides/EN/CP_R82.10_LoggingAndMonitoring_AdminGuide/Content/Topics-LMG/Monitoring-VPN-Tunnels.htm