// Topic collection
14 entries for this tag
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2026-09-22
Standard tools like proxychains often fail when it comes to multithreaded applications, Go/Rust binaries, Electron apps and system services. Enter tun2socks — a tool that creates a virtual TUN network interface, …
Read more2026-09-22
Netcat (nc) reads and writes data over TCP and UDP connections. With one small utility it’s convenient to check a port, grab a service banner, transfer a file between machines, or create a temporary tunnel. Below — …
Read more2026-09-22
DNS (Domain Name System) — a distributed system that tells, by domain name, where a website is located, where to deliver mail, and who owns the domain. Each such response is stored in the domain zone as a record of a …
Read more2026-09-22
Simple utilities from previous parts each answer their own question: ping — is there connectivity, traceroute — which path packets take, nc — is the port open. The three tools in this part give a more complete picture: …
Read more2026-09-22
An IP address identifies a host, and a port identifies a specific service on it. A web server usually accepts connections on port 80 (HTTP) and 443 (HTTPS), SSH on 22, databases and mail on their respective ports. A …
Read more2026-09-22
It happens: the computer has an address, the router responds, ping 8.8.8.8 works, but websites in the browser do not open. Most often the cause is DNS — the system that translates domain names into IP addresses. If a …
Read more2026-09-22
When “the internet is not working”, it’s convenient to check from the bottom up: first your own computer and local network, then connectivity to external nodes, then DNS, ports and applications. This …
Read more2026-09-22
For a long time MikroTik administrators faced a classical architectural dilemma. Imagine the situation: you have a single public IP address, but behind it you need to publish multiple web services on the local network, …
Read more2026-09-22
In a world where data privacy and access to resources are often restricted by geo-blocks or corporate policies, tools like ProxyChains become indispensable helpers. ProxyChains — or more precisely its modern fork …
Read more2026-06-24
There is a MikroTik router that goes to the Internet via WAN1. While there is only one gateway — everything works. As soon as a second WAN, a VPN tunnel with BGP routes, or just specific /32 prefixes appear in the main …
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