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nginx conf

May 20, 2026

| command, configuration, console, docker, docker-compose, information, nginx, port, private_ip, public_ip, remote-access, router, www

docker-compose.yml: The plan is to forward port 80 from the web/external network to port 80 of localhost Docker maps port 80 of localhost to port […]

redirect port and IP to another port and IP in macOS

April 8, 2026

| No Comments

| command, configuration, information, macos, public_ip, router

search for network interface in macOS or The name of a network interface through which you have wifi/ethernet internet can be called “en0” Install Socat […]

obtain public IPv4 and IPv6

March 30, 2026

| No Comments

| command, information, internet, linux, Linux Ubuntu Server, public_ip

ipv4: ipv6: this last returns IPv6 if available, otherwise IPv4 prioritizes ipv6 over ipv4, but it returns ipv4 to me If IPv6 throws an error, […]

Access the Nexus Sonatype repository and a port from an external PC

February 22, 2026

| No Comments

| gradle, information, port, public_ip, remote-access, router, spring-boot

Ubuntu usually has the firewall active. You need to allow traffic through port 8081: Configure Nexus to “listen” to everyone Sometimes Nexus is configured to […]

create a STUN server in Linux Ubuntu

September 13, 2025

| No Comments

| console, information, java, macos, nc, netplan, P2P, port, public_ip, server

A PC cannot know its public IP on its own; it needs a third party, that is a STUN server, it’s like a mirror. This […]