You're faced with a network disaster. How do you decide which components are critical for recovery?

Para decidir quais componentes s?o críticos para a recupera??o em um desastre de rede, primeiro avalie a extens?o do dano verificando o status de roteadores, switches, firewalls e servidores usando ferramentas de monitoramento. Identifique as partes afetadas e a gravidade do impacto. Priorize componentes com base na sua fun??o nas opera??es de rede, dando maior aten??o a elementos centrais como roteadores core, que afetam significativamente a conectividade geral, em vez de switches de acesso único em escritórios remotos. Isso ajudará a estabelecer uma imagem clara da saúde da rede e focar na recupera??o dos componentes mais críticos.

Assessing the damage is crucial when dealing with network issues. Start by identifying which parts of the network are affected and how severely. Check routers, switches, firewalls, and servers to understand the extent of the problem. Use monitoring tools to locate where the failure happened. Prioritize fixing components that play a critical role in network operations. For example, a core router being down will impact more than a switch in a remote office. This approach helps in getting a clear picture and addressing the most critical issues first.

When faced with a network disaster, the decision-making process revolves around understanding the criticality of systems, defining recovery objectives (RTO and RPO), prioritizing infrastructure components, ensuring robust backup and communication systems, leveraging vendor relationships, activating the DRP, coordinating team efforts, and learning from the incident for ongoing improvement. By following these steps, organizations can effectively navigate network disasters and minimize disruption to business operations.

Primeiro passo é sempre ver a saúde elétrica do data center. Se sim, subir os componentes necessários para que o monitoramento fique disponível: switches, roteadores, storages, hosts físicos, access points... E a partir daí, com o monitoramento online, conseguir visualizar todos os itens de configura??o de precisam ser reestabelecidos.

Décider quels composants sont essentiels à la récupération lors d'une catastrophe réseau implique une évaluation rapide et systématique des services critiques, une identification des dépendances, et une mise en ?uvre d'un plan de reprise d'activité bien documenté. Assurez-vous que les équipes sont bien informées et entra?nées pour réagir efficacement en cas de crise.

After evaluating the damage, prioritize the restoration of critical systems for immediate recovery. Focus on essential services vital to business operations like email servers, customer databases, and application servers. Take into account dependencies between systems; certain systems must be restored before others can operate correctly. For example, ensure domain controllers are operational first so users can authenticate and access additional services smoothly. This approach ensures that the most crucial functions are restored promptly, minimizing downtime and impact on operations.

2. Understand the dependencies: Know what are the dependencies between various components of your network infrastructure? Some components may depend on others and recovering selected ones first might be necessary for system recovery success.

After assessing the damage, prioritize systems essential for immediate recovery. Focus on critical services like email servers, customer databases, and application servers crucial to business operations. Evaluate dependencies between systems; restore those that support others first. For example, ensure domain controllers are operational for user authentication and access to other services. This approach ensures a methodical recovery sequence aligned with business continuity needs.

Depois de religar as máquinas, hora de subir os servi?os. Servi?os como banco de dados, e servidores de arquivos s?o sensíveis a quedas abruptas, ent?o nesse momento ter um backup atualizado é fundamental. Já presenciei casos de que o servidor de backup era virtualizado e o host físico teve problema de hardware por conta de problemas elétricos. Ent?o, sempre que possível, mantenha o servi?o de backup a parte, e com uma estratégia de Disaster Recovery para n?o ficar na m?o. Outro ponto importante é ter documenta??o de implanta??o e funcionamento dos servi?os, e também a topologia para poder identificar as conex?es.

Now that the damage has been assessed, a critical next step is referencing the asset evaluation documentation you should have. If you don’t have this, there needs to be a serious conversation had in later stages, but for now take a note. (If there is no docs for this, you as an admin should have a firm grasp of mission-critical assets that you know need to be serviced first) Using this documentation, as well as any binding things like SLA’s or contracts, and metrics like MTD (maximum allowable downtime) you need to service things in an order that maximizes EFFICIENCY and minimizes DOWNTIME. Remember as a sysadmin, if you do not meet these standards your job will be seen as a failed investment and changes will be made.

Creating a strategic recovery plan is crucial for restoring critical systems systematically. Prioritize steps based on the importance of systems to your operations. Keep the plan flexible to adapt quickly during a crisis. Verify the availability and integrity of backups to ensure they're ready for use. Consider conducting a disaster recovery simulation to assess the plan's effectiveness and uncover any weaknesses or resource needs beforehand. This proactive approach ensures readiness to handle real-world scenarios effectively.

Assess dependencies to ensure supporting systems are also prioritized. Use recovery objectives (RTOs and RPOs) to guide decisions, aiming to restore components that minimize downtime and data loss. Collaborate with stakeholders to validate priorities and ensure alignment with business needs. Regularly update and test your disaster recovery plan to adapt to changing requirements.

Nothing is more important than a Disaster Recovery Plan. As well as, constantly evaluating the Continuity Plan of the business so that they align strategically.

Proper analysis, measurements, business and tech recovery plans must be examined and put in place and repeatedly updated to support the continuity of the business. Front end, back end, and mission critical applications must have back ups to back ups of back ups to ensure business as well as customer needs. Cyber attacks must be engaged on the external and internal network level to avoid a successful intrusion to protect private information and to avoid security risks.

4. Stakeholder Involvement: Consult with stakeholders from different business units, IT teams and executive management. Understand what they consider important and opinions of how critical certain components are. Using their suggestions, you can know which parts to recover first.

Clear and effective communication is crucial during network recovery efforts. Stakeholders, including management, employees, and possibly customers if external services are impacted, must be kept informed about the recovery progress. Utilize diverse communication channels such as email, messaging platforms, and phone calls to provide regular updates. Transparency in communication helps manage expectations, minimizes panic, and allows all parties to concentrate on their respective roles in the recovery process. This approach ensures coordinated efforts towards restoring operations swiftly and effectively.

Nessas horas o ideal é juntar numa sala o time de suporte e que as a??es sejam feitas de modo orquestrado. O analista de rede, infraestrutura, SO, DBA e todos os outros que conhe?am a infra da empresa atuando em conjunto. Com a equipe validando a subida de cada servi?o e disponibilizando para os clientes aos poucos, o risco de novos incidentes será controlado.

Remember that you are a company asset. Companies dedicate so much money into their IT department to the point some see you as unjustifiable. A key role of yours is to use this event to prove your worth to the stakeholders. Your docs need to reflect what you did, what money was lost, but more importantly, HOW MUCH COULD IT HAVE COST if you weren’t in your office doing your job. If you display confidence and effectively communicate your worth as an IT asset while actually preforming your job function you are golden. As it pertains to coworkers, you need to utilize constant updates only to people who need it, make a distro for your emails, make a weekly or daily meeting, whatever needs to be done to establish effective info distribution.

La comunicación efectiva es el proceso de transmitir información de manera clara y precisa para que el receptor la comprenda de la manera deseada. Es una habilidad esencial para todos los aspectos de la vida, desde las relaciones personales hasta el trabajo en equipo. Elementos clave de la comunicación efectiva: * Claridad: El mensaje debe ser claro y conciso, utilizando un lenguaje sencillo y evitando tecnicismos. * Concisión: El mensaje debe ser breve y directo, evitando información irrelevante. * Empatía: Es importante comprender al receptor y adaptar el mensaje a su nivel de conocimiento y experiencia.

Restoring services should proceed in a systematic manner following the priorities outlined in your recovery plan. Begin with the most critical components to business operations. Adhere to best practices for configuration and security to prevent additional complications. Document each restoration step meticulously; this documentation will be essential for post-recovery analysis and refining future disaster response strategies. Validate the functionality of each restored component through thorough testing before progressing to the next phase. This methodical approach ensures that services are reinstated efficiently and reliably.

Follow your recovery plan as well as you can. If you come up with more unforeseen problems, document what went wrong for future streamlining. Always verify system functionality. Don’t think this part of the process will be as quick as you think. If you are able to maintain SLA’s and assuage stakeholder concerns by prioritizing your asset recovery, that means you might also be doing this stage farther into the future when your fixing non-essential devices/networks/hosts. And as always, this is your job, make sure your making summaries of your accomplishments as this is your moment to shine in front of higher up the chain (IT doesn’t get it much)

Depending on the downtime of the outage, priorities may change. It's imperative to remain in constant contact with the client to understand which systems are key and necessary based on timelines and business need. Never forget that the client is highly motivated to assist in any capacity when it comes to key "core" systems. Leverage them!

After restoring services, it's crucial to conduct a comprehensive post-recovery review. This entails analyzing the root causes of the incident, evaluating the execution of the recovery plan, and identifying opportunities for improvement in future incidents. Collaborate closely with your team to gather feedback on the recovery process, leveraging their insights to enhance the disaster recovery plan. Update the plan accordingly to incorporate lessons learned and ensure readiness for future challenges. This review phase is essential for strengthening your organization's resilience and response capabilities in the face of potential disruptions.

If you are the service provider I recommend an internal Post-mortem followed by a client post-mortem. Nobody likes to "re-live" an incident, but approached properly it can be the most effective process for organizational security cultural growth and meaningful security posture hardening. Don't skip this step... ever.

The industry's "dirty little secret" is that the "threat actors are winning". Our job is to educate and provide solutions (multiple-vendors and multi-layers of security combined with cybersecurity awareness training and phishing campaigns) to give our clients a fighting chance. Threat actors don't care about your cybersecurity "score" or your cybersecurity budget. If they have a way in, they will "milk" the opportunity for all that it's worth!

* Implementa políticas de contrase?as seguras y capacitación a los empleados sobre seguridad cibernética. 3. Controlar el acceso a los datos: * Limita el acceso a los datos confidenciales a los empleados que lo necesiten para realizar su trabajo. * Utiliza controles de acceso basados en roles para restringir el acceso a la información. * Supervisa el acceso a los datos y registra las actividades de los usuarios.

After recovery and successful review, propose any necessary overhaul / upgrade based on needs and tech advancement. this might be software patching/hot-fixing or equip specs for ease of scalability