Sascha Jelinek

quick problem solving through many years of experience
opnsense vpn

OPNsense VPN: 1:1 NAT as a Solution for Overlapping Networks

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When companies use OPNsense or similar solutions as a firewall and OpenVPN for remote access, they often encounter a common issue: the internal company network uses the same subnet as the employees’ home networks-for example, the widely used 192.168.178.0/24 subnet found on many FritzBox routers. In this scenario, the VPN client cannot reach the company servers because the packets get “stuck” in the home network and do not pass through …

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checkmk

Checkmk Distributed Monitoring: efficient monitoring across multiple locations

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In the modern IT world, companies face the challenge of efficiently monitoring their distributed and complex networks. Checkmk offers a powerful solution with its Distributed Monitoring, combining efficiency, scalability, and flexibility. What is Checkmk Distributed Monitoring? Checkmk Distributed Monitoring allows monitoring tasks to be distributed across multiple instances. This architecture makes monitoring manageable even in complex environments. Technical advantages of Checkmk Distributed Monitoring 1. Scalability and …

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