Technical guides for every NetTools.tech tool — what it does, how it works, how to read the results and how to troubleshoot — plus articles for system administrators, DevOps engineers and security professionals.
Tool guideNetwork Diagnostics
How the NetTools.tech speed test measures throughput and latency from your browser, what Mbps, ping, jitter, request loss and the quality score mean, and how to test fairly.
Tool guideNetwork Diagnostics
What MTR (My Traceroute) measures, how to configure ICMP, UDP and TCP tests, how to read loss and latency per hop, and why loss at one router is usually not a problem.
Tool guideNetwork Diagnostics
How the NetTools.tech jitter test measures round-trip variation in browser (HTTP) and server (ICMP) mode, how jitter is calculated, and how to read the stability rating.
Tool guideNetwork Diagnostics
What ping measures, how ICMP echo request and reply work, how to read RTT, TTL, loss and jitter, and why a host that ignores ping is not necessarily down.
Tool guideNetwork Diagnostics
How to check whether a TCP port accepts connections from the internet, what open, closed and filtered results mean, and how to troubleshoot port forwarding and firewalls.
Tool guideNetwork Diagnostics
How the NetTools.tech port scanner tests your own public IP or a DNS-verified server with fixed Nmap profiles, how to read open, closed and filtered ports, and what to do about exposed services.
Tool guideNetwork Diagnostics
How traceroute discovers the routers between two hosts, what the hop table, asterisks and timings mean, and how to use an online traceroute to locate path problems.
Tool guideNetwork Diagnostics
What ASNs are, how BGP uses them, how the NetTools.tech ASN lookup finds the responsible registry via IANA RDAP bootstrap, and how to read holder, status, dates and special-use ranges.
Category guideNetwork Diagnostics
An overview of the NetTools.tech network diagnostics: ping, traceroute, MTR, speed test, jitter test, port check, port scanner and ASN lookup — what each measures and which to use for which problem.