Vous êtes confronté à la maintenance et aux mises à niveau du réseau. Comment pouvez-vous assurer la sécurité de votre système ?

Before starting any network maintenance or upgrades, I believe it is critical to undertake a complete risk assessment. We can effectively focus our efforts by identifying the most vulnerable sections of the network and evaluating the possible impact of security attacks. By evaluating the current security measures across all linked devices. we can ensure that our maintenance process is led by educated judgments. This technique not only helps to mitigate threats, but also to allocate resources where they are most needed, eventually improving the network's overall security position.

We can divide the process in 3 steps. 1. Pre-Maintenance Planing- Identify potential risk and vulnerabilities that may be exposed. Backup all Imp data. Limited and authorised access only. Rollback plan plan if failure. 2. During Maintenance-Isolate that part of the network undergoing maintenance. Continuously monitoring and ensure all communications are secured to prevent unauthorised access. 3. Post Maintenance- Most Importance verify that all systems are functioning correctly and that no new vulnerabilities have been introduced. Document all the updates. Have minimal downtime, Mutli-factor based authentication and rollback plan.

To ensure security during network maintenance and upgrades, prioritize creating backups, implementing strong access controls, and using encrypted channels. Regularly update security patches, monitor for vulnerabilities, and have a rollback plan ready.

Implement robust firewalls, use encryption, update all software, conduct regular security audits, employ intrusion detection systems, restrict access controls, and create data backups. Train staff on security protocols and have an incident response plan ready.

Atualizações regulares: Manter o sistema atualizado é uma das melhores maneiras de garantir a segurança. As atualizações geralmente incluem correções para vulnerabilidades de segurança que foram descobertas.

Regularly upgrading software and hardware is crucial for network security since upgrades frequently resolve serious vulnerabilities. However, in my opinion, setting up a routine for checking and applying updates assures that all components remain secure. However, it is critical to test upgrades in a controlled environment first to identify potential compatibility issues before deploying them to the entire network to avoid hardware or software difficulties.

Here is a different and precise analogy!! Think of updates as vaccines for your network. Just as vaccines protect your body from harmful viruses, updates shield your network from cyber threats. Manufacturers continually release patches to fix vulnerabilities, so staying current is crucial. Regularly updating your software and hardware is like maintaining a robust immune system, preventing malicious attacks from exploiting weaknesses. However, just as vaccines can have side effects, updates can sometimes cause compatibility issues. To avoid disruptions, test updates in a controlled environment before deploying them network-wide, ensuring a smooth and secure upgrade process.

Aplicação de Patches e Atualizações: Mantenha todos os sistemas e softwares atualizados com os patches de segurança mais recentes. Isso ajuda a corrigir vulnerabilidades conhecidas e a proteger contra ameaças.

Manter software e hardware atualizados é essencial para a segurança da rede, já que atualizações frequentemente corrigem vulnerabilidades. Defina um cronograma para verificar e aplicar atualizações regularmente, garantindo que todos os componentes estejam com as versões mais recentes. Porém, teste essas atualizações em um ambiente controlado para evitar problemas de compatibilidade antes de implementá-las em toda a rede.

Manter os devices atualizados é o que trás um ambiente mais leve e organizado, a Microsoft hoje em dia trabalha com serviços parecidos onde é testado antes essas atualizações para depois ser colocada no parque para todos os usuários.

we should     Strict access control is essential for securing a network, ensuring that only authorized employees or users have appropriate access. Implementing multi-factor authentication (MFA) and regularly reviewing permissions helps minimize risks and secure the network. Additionally, network segmentation adds an extra layer of security, limiting the impact of potential breaches.

Think of your network as a high-security museum. Access control policies are like the museum's visitor management system. You need to carefully manage who enters (authenticating users with strong methods like MFA), what areas they can access (assigning permissions based on role), and what exhibits they can see (segmenting the network to limit access). Just as the museum curator regularly reviews exhibit access to ensure only authorized staff can handle valuable artifacts, you should regularly review user permissions to prevent unauthorized access to sensitive data. By doing so, you'll protect your network's treasures from theft and damage.

Understand the way security works on your devices, and apply the configuration that makes the most sense for your environment. Understand the cryptographic capabilities of your legacy hardware and use the best level of encryption possible when setting up remote access. Configure security before you connect the device to the network.

Implementação de Firewalls e Criptografia. Utilize firewalls robustos para proteger a rede contra acessos não autorizados. Além disso, implemente criptografia para proteger dados em trânsito e em repouso

Hoje em dia é crucial ter um ambiente seguro, e atualizado, hoje diversas empresas investem em segurança, para evitar diversos tipos de ataques ou vazamentos de dados. Tempos que ter diversas camadas de segurança, desde autenticação, criptografia etc… desde senhas que devem ser alteras de tempo em tempo.

Securing setup is critical for network security, which includes activities such as changing default passwords, removing unnecessary services, and establishing powerful firewalls so that any type of network-related issues can be avoided. Encrypting sensitive data, both at rest and in transit, provides additional protection against breaches. VPNs and secure setups reduce weaknesses, lowering the network's vulnerability to possible attackers.

Configurar dispositivos de rede de forma segura é crucial para reduzir vulnerabilidades. Isso envolve alterar senhas padrão, desativar serviços desnecessários, ajustar as configurações do firewall e criptografar dados sensíveis em repouso e em trânsito. O uso de VPNs, por exemplo, protege a transmissão de dados na rede. Uma configuração robusta diminui a superfície de ataque, aumentando a segurança da rede.

Vimos recentemente algo sobre o crowdstrike uma das maiores se não a maior no ramo de antivírus do mercado, e um dia que devido uma atualização impactou diversas empresas e sistemas, e devemos estar preparados para isso e não esperar acontecer para agirmos, esse é uma típico exemplos que estamos sujeitos a tudo.

This is one of the responsibilities to do because most people think it is not mandatory to update or perform these operations, so they easily skip the steps. A few days later, they will see the results of silly mistakes like losing the amount from the bank. So, we have to educate the employees about this simple but effective action so they can clearly know what they are doing. In my experience, I have guided a lot of the employees to secure their software and hardware-related issues so they can secure the environment.

O elemento humano é frequentemente o ponto mais vulnerável na segurança da rede. Treinar usuários sobre práticas seguras, como identificar phishing, criar senhas fortes e manusear informações sensíveis, é essencial. Atualizações regulares sobre novas ameaças e protocolos de segurança ajudam a manter a equipe informada e preparada. Usuários bem treinados tornam-se a primeira linha de defesa contra ataques cibernéticos.