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Category: public_ip

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 […]

create a web page with Python 3

September 9, 2025
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 |  information, linux, port, public_ip, python, router, web
located in the current directory where you have an .HTML file -m is to execute a python module http.server is a module for python3 51000 […]

DYN updater by DDCLIENT in linux ubuntu server

September 8, 2025
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 |  information, linux, public_ip, server
The DDNS service updates the public IP with the DDCLIENT daemon in Linux. The DDNS service I use is called DYN DNS. ddclient is an […]

Remotely access a PC with a router as if it were a VPS

September 6, 2025
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 |  information, linux, macos, port, public_ip, remote-access, server
I’m not going to explain everything here since you can find each part on this website. Basically the goal is to connect from PCA to […]

DNS records: A and CNAME and SSH

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 |  dns-record, information, linux, macos, public_ip, server
Parking or URL redirects and DNS (A or CNAME) records serve similar purposes, but operate differently. Parking or URL redirects are used for web pages. […]

DYNAMIC DNS

September 4, 2025
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 |  information, linux, public_ip, server, web, windows
I will use DYNDNS. https://account.dyn.com/dns/dyndns In the Services/DYN DNS HOSTS section. you must create a new host. If your goal is to connect to your […]

communicate 2 PCs via public IP with TCP or UDP

May 23, 2025
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 |  console, information, linux, macos, message, messaging, nc, package, port, protocol, public_ip, server
nc is a command-line tool called Netcat. It’s a very versatile network utility used to read and write data over network connections, using both the […]

communicate 2 PCs with P2P protocol

May 7, 2025
 |  No Comments
 |  information, java, message, messaging, P2P, port, protocol, public_ip
One PC is a server, the other is a client, they communicate using the public IP IPv6. The example is implemented in Java Attention: The […]

scan a port on the router device, that is, internal, private ip

May 4, 2025
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 |  information, nmap, port, public_ip
example In this case the port 15000 on the IP 181.44.129.209 is being filtered open port example: is in open state, which means there is […]

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