Seguridad informática Jobs

I’m seeing legitimate human visitors locked out of my blog articles because some of my current Cloudflare firewall rules are too aggressive. While the bad-bot and scraper filters must remain in force, I need every other rule reviewed, trimmed, or rewritten so only real threats are challenged or blocked. Here’s what I need from you: • Audit all existing Cloudflare WAF, custom firewall, rate-limiting, and bot-management rules. • Identify why human traffic is getting blocked, especially on blog article URLs. • Propose and implement precise rule adjustments or new rules that restore access for real users without weakening security. • Preserve—or improve—protections that block or challenge excluded/bad bots responsible for high server load. &...

I’ve built a custom web application and it’s almost ready for production. Before the public rollout, I want a rigorous penetration test that will expose any weakness and help tighten every layer of security. The assessment must be hands-on and realistic, covering the full stack rather than a purely theoretical review. Scope My priorities are clear: • Code review – comb through the source for injection points, authentication flaws, insecure dependencies, and logic errors. • Network-level probing – map open ports, misconfigured firewalls, and potential lateral-movement paths. • Server configuration – evaluate patch levels, TLS setup, permissions, and hardening of the underlying OS and web server. Primary Goal The sole purpose is to imp...

We are seeking a reliable IT team to support our medical centre with comprehensive, end-to-end IT services. This would include setting up, managing, maintaining, and regularly updating all aspects of our IT infrastructure, including networks, servers (on-site and / or cloud-based), workstations, computers, printers, and all connectivity systems. We require ongoing management of firewalls, cybersecurity protections, antivirus and anti-malware systems, data encryption, secure remote access, backups and disaster recovery solutions, and proactive monitoring to prevent downtime. Support would also cover software installation and updates (including clinical and practice management systems - Best Practice), email systems, cloud services, data storage, compliance with healthcare data protection re...

We are seeking a reliable IT team to support our medical centre with comprehensive, end-to-end IT services. This would include setting up, managing, maintaining, and regularly updating all aspects of our IT infrastructure, including networks, servers (on-site and / or cloud-based), workstations, computers, printers, and all connectivity systems. We require ongoing management of firewalls, cybersecurity protections, antivirus and anti-malware systems, data encryption, secure remote access, backups and disaster recovery solutions, and proactive monitoring to prevent downtime. Support would also cover software installation and updates (including clinical and practice management systems - Best Practice), email systems, cloud services, data storage, compliance with healthcare data protection re...

I need a MeshCentral/Windows systems engineer to optimize a Windows 11 lab remote-support setup. When Secure Exam Browser (SEB) enters protected mode, remote desktop may go black (expected). I need a compliant solution: stable agent deployment, correct permissions/consent, TLS/relay configuration, and a documented pre-exam support workflow + troubleshooting checklist. No bypass of SEB protections. Deliverables: working MeshCentral config, agent install package/script, and step-by-step documentation.” I am looking for a Windows Systems Engineer to help configure a MeshCentral server for advanced remote support. We are experiencing an issue where the remote screen goes blank when the client system switches to an isolated/secure desktop session (such as UAC prompts or custom secure shel...

I need help tracing harassment issues related to cyberstalking. I suspect my LinkedIn account has been compromised, and I'm receiving harassment on email and other online platforms. Key tasks include: - Investigating unauthorized logins and profile changes on my LinkedIn. - Identifying sources of harassment on email and other platforms. - Providing a report of findings and recommendations to secure my accounts. Ideal skills and experience: - Experience with cybersecurity - Familiarity with LinkedIn security protocols - Strong investigative skills - Ability to provide clear, actionable reports

My network edge relies on a Sophos XG appliance and a Fortinet FortiGate unit. Both devices are in production, but their current configuration is a mix of legacy rules and quick fixes that now interfere with performance and security. I want a seasoned firewall engineer to step in, examine every setting, correct what is wrong, and design a clean, least-privilege rule base. Scope of work • Configuration – back up the existing setups, remove or refine redundant rules, and align all interfaces, NAT, VPN, IPS and logging options with best-practice guidelines for Sophos SFOS and FortiOS. • Troubleshooting – identify and eliminate the intermittent drops we see on site-to-site VPN and outbound web traffic. Validation must include live traffic tests and log review. &bul...

I operate a cluster of Windows Server 2019 machines and need an experienced set of hands to keep everything running smoothly. Your focus will be three-fold: maintaining the servers themselves, getting our Veeam Backup & Replication environment dialled-in, and stepping in whenever a network hiccup or whitelist request appears. On the Veeam side I already have repositories in place; what’s missing is a clean, reliable backup configuration and the regular monitoring that guarantees every job finishes without warning bells. Restoration testing and documented recovery steps will be part of the routine so we can prove our RPO/RTO targets at any moment. Networking support centres on troubleshooting issues as they arise and processing whitelist updates for partners and applications tha...

I am looking for an experienced Instagram account recovery specialist to help me regain access to my business Instagram account. I currently cannot log in to my account through any method: Password reset is not working Facebook login is not working Instagram recovery page shows “No account found” However, the username and account are still visible when checked from another Instagram account Additional details: This is a business account I still have access to the original email and phone number The issue happened suddenly, likely due to hacking or unauthorized changes What I need: Proper recovery through Instagram / Meta official support Assistance with hacked account appeal and verification No fake tools or scams — only legitimate recovery methods Requireme...

I’m in the middle of an ongoing project and have run into a few stubborn issues that I can’t resolve on my own. What I need right now is straight-forward technical support with a strong focus on troubleshooting. The exact fault lines aren’t fully mapped yet—that’s why I’m turning to someone who’s comfortable methodically isolating problems, testing hypotheses, and guiding me to a clean resolution. Here’s how I picture the engagement: • You jump on a quick call or chat to gather environment details and replicate the failure. • We narrow down root causes together—whether the culprit ends up being code, configuration, network quirks, or even a hardware hiccup. • You document each fix or workaround as you go so I can re...

I need help connecting my already installed wired security cameras to my WiFi router at home. Ideal Skills and Experience: - Experience with wired security camera systems - Knowledge of WiFi network setup and configuration - Ability to troubleshoot connectivity issues - Prior work with home security systems is a plus

I need a thorough, methodical security assessment of my production-ready web application. The goal is to expose any weaknesses before launch, demonstrate real-world exploitability, and give me a clear, prioritized plan for remediation. Scope • Full application security testing: authentication, authorization logic, input validation, business-logic flows, session management, server configuration, and third-party integrations. • Black-box techniques are fine, but I can supply test credentials for deeper analysis if that helps you reach code paths hidden behind login. • Industry-standard tooling such as Burp Suite, OWASP ZAP, Nikto, or your preferred commercial scanner is expected, followed by manual verification so I’m not just getting automated false positives. ...

Desktop / System Engineer – Onsite (1-Day Assignment) We are seeking a hands-on Desktop or System Engineer to be onsite at a client location for one full day to support a small IT infrastructure refresh. You will act as the onsite engineer while a remote technical team remains on standby. Your primary responsibility will be to rack, cable, power up, and patch IT and network equipment (servers, switches, firewalls, desktops, and printers) strictly according to the diagrams and instructions provided in advance. You will also connect console or management cables to enable remote engineers to complete configuration tasks. Before wrap-up, you will perform basic end-user computing (EUC) checks, including light troubleshooting for desktops, laptops, and printers—verifying network c...

My iPhones and several smart-home devices have almost certainly been compromised. Unexplained behaviour, network slow-downs and repeated password lockouts suggest an active intrusion that I have not been able to stop remotely. I need an experienced cyber-security professional to visit in person, trace the breach and leave every device—and the Wi-Fi network itself—clean, secured and fully documented. What I expect during the visit • A thorough forensic check of each affected iPhone and the smart-home hub/gear, including router or mesh nodes you judge relevant. • Immediate containment and removal of any malicious profiles, apps, firmware or network configurations you uncover. • Clear advice on whether each device can be salvaged or should be replaced, follow...

Need experienced Linux System Administrator for server hardening. Tasks include security audit, firewall configuration, SSH hardening, user access control, patch management, and security monitoring setup. Must have experience with Ubuntu/CentOS and tools like Fail2ban, SELinux. Provide documentation of all changes.

I’m completing a networking and security module at school and the current assignment requires a fully-configured Cisco Packet Tracer project. If you’ve tutored or prepared Packet Tracer or such kind of assingment please help me

A recently rebuilt Windows workstation needs a bullet-proof antivirus setup carried out over a remote session. The job begins with selecting an effective AV suite (I am open to your recommendation—Norton, McAfee, Kaspersky, or another best-in-class option) and continues through full installation, optimisation, and hardening. Key protection goals • Online banking: isolate browser sessions, enable real-time phishing & key-logger defences, and verify safe-transaction modules are active. • Confidential files: enforce on-access scanning, tune heuristic settings for maximum detection, and lock down local folders with password-protected vaults or encryption available within the AV. • Google Drive sync: ensure cloud-storage scanning is enabled, block malicious file ...

Upgrade the pfss and rebuild the cluster with recovery group of 8 pfss servers,it's urgent requirement

I run a production-level Windows server that now needs steady, professional care. The box is already up and live; what I need is someone who can step in and take over the routine work that keeps it healthy and secure. Your core responsibility will be ongoing maintenance—installing patches, checking logs, pruning obsolete services, and making sure performance never drifts. In parallel, I want proactive security updates: closing vulnerabilities quickly, hardening configurations, and documenting every change so there are no surprises later. A typical month might include: • Scheduling and applying Microsoft updates with minimal downtime • Reviewing Event Viewer and other logs for early warning signs • Updating firewall rules or IPS policies when new threats emerge ...

We are currently looking for freelance Network Engineers in your city to support ongoing onsite requirements for our customers and act as the eyes and hands for the remote configuration team. Typical visit • Arrive at the customer location, meet the local contact, and review the work order • Rack, stack, and cable routers, switches, firewalls, or wireless access points exactly as marked on the network diagram. • Power on the gear, provide console access back to our remote engineers, and stay on-site while they push the configs and run their tests. • Perform basic physical troubleshooting if something doesn’t light up as expected and coordinate with the remote team until sign-off. What you need to bring Your own laptop, a console cable, and any basic hand tools y...