Praktische Werkzeuge für System-, Netzwerk-, Sicherheits- und Betriebsadministratoren.

NET

Netzwerk-Schreibtisch

Adressierung, DNS, Ports und die stille Arithmetik der Pakete. Zuerst Rechner; Nachschlagewerke, die klein bleiben.

601–624 / 1037

MTR Report

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Combined ping/traceroute with loss per hop. The result stays on this page.

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UDP Port Checker

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UDP Port Checker. Probe common UDP services. The result stays on this page.

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Bulk Port Checker

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Bulk Port Checker. Check multiple host:port pairs. The result stays on this page.

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Website Response Time Test

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Measure response time from multiple regions. The result stays on this page.

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Latency & Jitter Test

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Measure latency and jitter from the browser. The result stays on this page.

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Packet Loss Test

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Browser-based packet loss test via WebRTC. The result stays on this page.

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Path MTU Tester

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Path MTU Tester. Discover path MTU to a host. The result stays on this page.

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SMTP Server Test

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Test SMTP banner, STARTTLS and response. The result stays on this page.

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NTP Server Checker

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Query an NTP server for stratum and offset. The result stays on this page.

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gRPC Endpoint Checker

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gRPC Endpoint Checker. Test gRPC health/reflection endpoints. The result stays on this page.

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Bufferbloat Test

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Bufferbloat Test. Measure latency under load. The result stays on this page.

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OSPF Cost Calculator

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Interface cost from bandwidth and reference bandwidth. The result stays on this page.

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OSPF LSA Type Reference

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Interactive LSA types and area behaviour. The result stays on this page.

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EIGRP Metric Calculator

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Composite metric from K-values, bandwidth and delay. The result stays on this page.

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Administrative Distance Reference

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Administrative Distance Reference. AD values by vendor and protocol. The result stays on this page.

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Longest Prefix Match Simulator

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Show which route wins for a destination. The result stays on this page.

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Routing Table Lookup Simulator

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Paste a routing table and test destinations. The result stays on this page.

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BGP AS-Path Regex Tester

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BGP AS-Path Regex Tester. Test AS-path regular expressions. The result stays on this page.

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BGP Community Decoder

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Decode standard and well-known communities. The result stays on this page.

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BGP Large Community Decoder

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BGP Large Community Decoder. Decode RFC 8092 large communities. The result stays on this page.

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BGP Prefix-List Generator

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BGP Prefix-List Generator. Generate prefix-lists from prefixes. The result stays on this page.

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BGP Route-Map Builder

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BGP Route-Map Builder. Build route-maps from a form. The result stays on this page.

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Static Route Generator

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Static Route Generator. Generate static routes from a table. The result stays on this page.

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ECMP Hash Calculator

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Estimate flow distribution across ECMP paths. The result stays on this page.

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