https://nettools.asiavpn.app/blog/ Analyze Wi-Fi channels, discover devices on your LAN, test your speed, scan ports, and run ping, traceroute, DNS and WHOIS. Native Android, no root. en Fri, 04 Sep 2026 00:00:00 GMT https://nettools.asiavpn.app/blog/why-two-speed-tests-on-the-same-link-disagree/ https://nettools.asiavpn.app/blog/why-two-speed-tests-on-the-same-link-disagree/ Header overhead, TCP slow start, percentile arithmetic and per-IP rate limits: four reasons two honest tools disagree, and which one to believe. Fri, 04 Sep 2026 00:00:00 GMT speed https://nettools.asiavpn.app/blog/choosing-a-wifi-channel-that-actually-helps/ https://nettools.asiavpn.app/blog/choosing-a-wifi-channel-that-actually-helps/ How to read a channel occupancy chart, why 1-6-11 is still the answer on 2.4 GHz, and why every Android Wi-Fi analyser makes you press a button. Tue, 01 Sep 2026 00:00:00 GMT wifi https://nettools.asiavpn.app/blog/ip-camera-default-ports-and-why-a-port-is-not-a-brand/ https://nettools.asiavpn.app/blog/ip-camera-default-ports-and-why-a-port-is-not-a-brand/ The ports each camera vendor ships with, what each one is actually for, and why a scanner should never print a brand name beside a port number. Wed, 26 Aug 2026 00:00:00 GMT ports cctv https://nettools.asiavpn.app/blog/find-an-ip-camera-on-a-network-you-have-never-seen/ https://nettools.asiavpn.app/blog/find-an-ip-camera-on-a-network-you-have-never-seen/ Four ways a device announces itself on a LAN, which of them Android can actually use, and the order to try them in when nobody can tell you the address. Wed, 12 Aug 2026 00:00:00 GMT lan cctv https://nettools.asiavpn.app/blog/wifi-basics-ssid-bssid-channels-and-bands/ https://nettools.asiavpn.app/blog/wifi-basics-ssid-bssid-channels-and-bands/ What SSID, BSSID, channel, band and dBm each mean, why one network can have six BSSIDs, and how to read −67 dBm without guessing. Wed, 22 Jul 2026 00:00:00 GMT fundamentals wifi https://nettools.asiavpn.app/blog/tcp-udp-and-what-a-port-scan-can-actually-see/ https://nettools.asiavpn.app/blog/tcp-udp-and-what-a-port-scan-can-actually-see/ The handshake, why a TCP port scan gives a straight answer and a UDP one mostly cannot, and why an honest scanner avoids the word "closed". Wed, 08 Jul 2026 00:00:00 GMT fundamentals ports https://nettools.asiavpn.app/blog/what-dns-actually-does-and-how-to-tell-when-it-is-lying/ https://nettools.asiavpn.app/blog/what-dns-actually-does-and-how-to-tell-when-it-is-lying/ Recursion, record types, TTL, and why a name that does not exist is a different finding from one that exists with nothing behind it. Wed, 24 Jun 2026 00:00:00 GMT fundamentals dns https://nettools.asiavpn.app/blog/ipv4-and-ipv6-addresses-explained/ https://nettools.asiavpn.app/blog/ipv4-and-ipv6-addresses-explained/ Subnet masks and prefixes, why 192.168.x.x is not an internet address, and the reason your phone is holding three IPv6 addresses at once. Wed, 10 Jun 2026 00:00:00 GMT fundamentals