FAQ

Frequently Asked Questions

STEALTH "DROP" Port, Ports In IPTables Firewall

English

STEALTH "DROP" Port, Ports in IPTables firewall.

By stealth, it means the port is closed for connections and will not respond at all, so if for example you have a FTP-server and want to block the port 21, then you type the following command in a terminal window.

STEALTH "DROP" Port, Ports in IPTables firewall.

Command:

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FAQ

Frequently Asked Questions

List Repositories Debian, Kali Linux 2019.xx

English

List repositories Debian, Kali Linux 2019.xx

Different Linux distributions have different commands to list the repositories.

List repositories Debian, Kali Linux 2019.xx

Below you will find the one for Debian and Kali Linux 2019.4.

grep ^[^#] /etc/apt/sources.list /etc/apt/sources.list.d/*

Press Enter, done.

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FAQ

Frequently Asked Questions

Reset Key Ring Debian 8 Jessie, Debian Stretch 9

English

Reset key ring Debian 8 Jessie, Debian Stretch 9.

Have you forgotten your "Keyring" passwords in Debian and want to reset your Key Ring, but keep old passwords, you must first backup the existing ones.

Reset key ring Debian 8 Jessie, Debian Stretch 9.

cd ~ / .local / share / keyrings /

Press Enter.

cp login.keyring login.keyring.backup

Press Enter.

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FAQ

Frequently Asked Questions

Check If My Ports 139, 445 Are Open To The Internet

English

Check if my ports 139, 445 are open to the Internet.

A mass Router hack exposes millions of devices to an NSA Exploit, so far 45,000 Internet routers have been compromised by this newly discovered campaign designed to open networks to attacks by EternalBlue.

This new attack exploits routers with vulnerable implementations of Universal Plug and Play, to force connected devices to open ports 139 and 445.

Check if my ports 139, 445 are open to the Internet.

This is how you check what ports are open and what is listening on them:

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FAQ

Frequently Asked Questions

Como Faço Para Fechar Uma Porta Ou Portas No Firewall IPTables?

Portuguese, Brazil

Por furtividade, isso significa que a porta está fechada para conexões e não responderá de forma alguma, portanto, se, por exemplo, você tiver um servidor FTP e quiser bloquear a porta 21, digite o seguinte comando em uma janela de terminal.

Command:

iptables -A INPUT -s 12.34.56.0/24 -m tcp --dport 21 -j DROP

Para abrir a porta novamente, simplesmente mude DROP para ALLOW.

 

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FAQ

Frequently Asked Questions

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