ネットワークセキュリティ Jobs

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I need an experienced IT professional to set up and maintain a Local Area Network (LAN) for a large network of 51+ devices. Key Requirements: - Design and implement a robust LAN infrastructure - Ensure secure and efficient network connectivity - Regular maintenance and troubleshooting - Provide documentation and support Ideal Skills and Experience: - Proven experience with large-scale LAN setup - Strong knowledge of network protocols and security - Certifications such as CCNA or CompTIA Network+ - Excellent problem-solving skills Please provide relevant work experience in your bids.

I need a hands-on network engineer who can come in immediately and take care of the physical side of a new Juniper rollout. The racks are in place; what’s left is to install the hardware, dress and terminate copper / fiber runs, label everything clearly, and leave me with clean documentation so I can slide straight into configuration work afterward. Scope of work • Unbox, rack and secure the Juniper switches and routers I provide. • Run and neatly bundle all required patch leads and backbone fiber, keeping to existing cable-management channels. • Test every link for continuity and performance, then label both ends to my naming scheme. • Hand over a simple diagram and port-to-port spreadsheet so I can verify the layout. Acceptance criteria 1. All devices po...

JOB OPPORTUNITY – ETHICAL HACKING / CYBERSECURITY We are looking for a skilled Ethical Hacker / Cybersecurity Specialist to help improve and strengthen the security of our website. The main responsibilities include: - Identifying potential security vulnerabilities - Conducting authorized security assessments - Testing website security and identifying weaknesses - Providing recommendations to improve overall cybersecurity - Helping implement appropriate security measures Requirements: - Good knowledge of Ethical Hacking and Cybersecurity - Practical experience in website security and penetration testing - Strong understanding of web application security - Responsible and professional approach to security testing If you have the required skills and experience, please contact us. ...

I want complete peace of mind that my personal iPhone & android Samsung is fully locked down against hackers. The job is straightforward: audit every setting, app permission, network profile, and cloud-sync option on the device; fix or guide me to fix anything that leaves an opening; and finish with a clear summary of what was changed and why. Because this is for personal use, I’m focused on practical, real-world protection rather than corporate compliance checklists. Expect to work directly with me over a secure video or messaging channel so I can follow along while you adjust settings such as Face ID, two-factor authentication, iCloud Keychain, Wi-Fi/cellular profiles, and any third-party security apps you recommend. Deliverables • A live, step-by-step hardening se...

1. Flight Navigation & Operations Management - Real-time flight tracking for arrivals and departures. - Automated gate, terminal, and runway allocation algorithms. - Comprehensive air traffic schedule management. 2. Passenger Ticketing & Access Control - Passenger registration and automated ticket issuance system. - Baggage tracking and gate access control mechanisms. - Interactive user interfaces developed with Java GUI (Swing/JavaFX) following Event-Driven Programming principles. 3. Network Infrastructure & Security (Cisco Packet Tracer) - End-to-end Network Topology design simulating airport communications. - Advanced routing and switching configurations. - Implementation of Access Control Lists (ACLs) and firewall boundaries to isolate operational networks from public tra...

Saya membutuhkan bantuan end-to-end untuk sistem CCTV di rumah tinggal saya. Lingkup pekerjaan mencakup: • Survey lokasi terlebih dahulu untuk memetakan lebih dari 5 ruangan yang akan dipantau. • Merekomendasikan titik dan arah kamera terbaik demi pengawasan aktivitas di seluruh rumah. • Menarik dan merapikan kabel jaringan/CCTV berikut semua perangkat pendukungnya. • Melakukan pemasangan kamera, NVR, serta konfigurasi jaringan dan remote monitoring agar akses jarak jauh berjalan mulus. • Menjalankan pengujian menyeluruh hingga seluruh kanal video berfungsi normal tanpa blind spot. • Troubleshooting langsung di tempat jika ditemukan kendala selama atau sesudah instalasi. • Menyusun laporan lengkap berisi hasil survey, diagram posisi kamera, p...

I’ve just installed a residential UniFi Dream Machine Pro with Protect and I want the whole environment tightened up before it goes live. Here’s what I need: • Build a solid firewall policy from scratch—block known-bad IP ranges, close unnecessary ports, and create custom rules that fit my lifestyle • Activate and fine-tune UniFi’s Threat Management (IDS/IPS) so intrusion attempts are detected and stopped automatically. • Set up live and historic monitoring for web and email traffic, with clear dashboards and alerting inside the UniFi controller. • Check VLAN design and switch settings to be sure lateral movement is limited. • A short hand-off session so I understand how to review logs, update rules, and keep everything current. A...

I have a MikroTik 5009B that needs to leave our lab ready for long-term production use under our brand. The job covers every layer of configuration—network setup, routing, security hardening, firewall rules, and wireless optimisation—so the unit ships with best-practice performance and rock-solid protection. Alongside the technical build I also want it re-branded: a custom RouterOS build that shows our logo on boot, a web interface reskinned in our colours, and a repeatable set of configuration scripts that already include our company name, contact banner, and standard VLAN/DHCP scheme. I should be able to flash a new device in minutes and have it come up with the same look, feel, and settings you create here. Deliverables • Complete live configuration on the 5009B, fu...

Workspace ONE UEM / MDM Engineer Experience: 8–20 Years Employment Type: Full-time / Contract / Freelancer/ Location:- India /Saudi Job Description We are looking for an experienced Workspace ONE UEM / MDM Engineer to design, implement, and support an enterprise Workspace ONE environment. Key Responsibilities Design and deploy Omnisa Workspace ONE UEM in a hybrid, HA/DR and secure DMZ architecture. Manage Windows, iOS, Android, macOS and other enterprise devices. Configure device enrollment, profiles, policies, compliance, security and application management. Integrate Workspace ONE with Active Directory, Exchange, PKI, VPN and enterprise security infrastructure. Implement security features including jailbreak/root detection, remote wipe, email protection, application control ...

My office network has become painfully sluggish and I need a specialist to jump in, trace the bottleneck and restore normal speeds. This is a pure troubleshooting engagement—no fresh installs or routine maintenance—so I’m expecting systematic diagnostics, clear root-cause identification and a fix that holds. The issue: noticeable performance degradation that shows up as slow internet speed for all users. Basic resets and router reboots have not helped, so I suspect something deeper (mis-configured switch, bandwidth hog, firmware bug, or similar). Here’s what I need from you: • Remote or on-site diagnostics using your preferred tools (Wireshark, NetFlow analyzers, SNMP monitoring, etc.) • Actionable remediation—configuration tweaks, hardware recom...

I’m polishing an HND-level report that tackles Network Security and need an experienced hand to make sure every paragraph, citation and technical claim stands up to academic scrutiny. What I’ll supply • The full assignment brief, marking rubric and my current draft. What I need from you • Pin-pointed research help: locate and suggest up-to-date, peer-reviewed sources (journals, white papers, standards) that directly reinforce my arguments. • Harvard-style referencing confidence: correct in-text citations, full reference list, and quick checks that every source is credible. • Structural guidance: confirm the logical flow of introduction, analysis, conclusions and recommendations, ensuring each rubric criterion is satisfied. • Technical accu...

Network Engineer for Secure Proxy & Gateway Architecture Seeking an experienced network engineer to build and deploy a secure proxy system using 3X-UI (MHSanaei) on a remote server and sing-box on a Raspberry Pi client gateway, featuring automatic protocol failover between VLESS-Reality and Hysteria2. Tech Stack Server: 3X-UI (MHSanaei fork) Client: sing-box on Raspberry Pi Protocols: Hysteria2, VLESS-Reality Project Phases 1. Proof of Concept: Set up development client environment, configure remote nodes, and deploy sing-box locally to verify routing and failover. 2. QA Deployment: Deploy a single QA server and connect the Raspberry Pi gateway for real-world testing. 3. Production Deployment: Scale to multiple production server nodes and configure the Raspberry Pi gateways for hig...

I need a single specialist who can handle the full cycle of a CCTV project for a facility in Colombia: first, commission the entire camera system on-site, then assume ongoing remote surveillance every Sunday. Scope of work • Complete, on-site installation and configuration of a reliable multi-camera system (networking, storage, and remote-access setup included). • Weekly live monitoring only on Sundays, 08:30-17:30 IST (≈ 00:00-09:00 local Colombia time), totalling about 39 hours each month. • Immediate WhatsApp alerts the moment a breach, safety issue, or anomaly is spotted, followed by a concise incident report. • Smooth hand-off documentation so another operator could step in if needed. What I need from you right now Please send a detailed project p...

I’m refreshing our on-premises network and want it configured and stress-tested by someone who lives and breathes both infrastructure and security. First, the infrastructure work: • Build out the Layer-2 and Layer-3 design—router and switch configuration, IP addressing, VLAN segmentation, and DHCP where required. • Ensure the new topology is clean and resilient, with clear change notes so I can reproduce or roll back any step. • Troubleshoot anything that crops up during the cut-over and document the fixes. Once the cables are tidy and the configs committed, I’ll need you to put on the black hat—legally, of course. Using tools such as Nmap, Nessus, Kali Linux, or your preferred equivalents, perform network scanning, a full vulnerability assessment, ...

Our office needs a reliable wired + wireless network built from the ground up, then hardened and fine-tuned so everyday work runs smoothly. The job covers three clear areas: • Network installation – design the layout, select appropriate switches, routers, cabling/Wi-Fi gear (Cisco, Ubiquiti or similar), install and configure everything on-site or guide us remotely. • Network troubleshooting – diagnose any bottlenecks, mis-configurations or connectivity drops during roll-out and after go-live, providing swift fixes and clear explanations. • Network security setup – implement VLANs, firewall rules, secure Wi-Fi, strong authentication and up-to-date firmware, and verify the setup with penetration or vulnerability tests. Deliverables will include the full...

I need a ASA specialist to jump on a screen-share with me and tidy up two Cisco ASA 5512 units that are managed through ASDM. The primary goal is to enhance security, so every change we make should follow best-practice hardening guidelines. Here’s what I would like accomplished during the session: • Audit all existing Access Rules, NAT rules and Service-Policies, then rename, regroup logically and remove anything redundant or obsolete. • Confirm that the two appliances are operating correctly in active–standby high-availability mode. • Re-segment traffic so Internal, DMZ and Guest zones are clearly defined with the appropriate security levels and inter-zone policies. • Review the remainder of the configuration, highlight weak spots and suggest improv...

I’m looking to bring in a seasoned network engineer who can set up and maintain a reliable, secure infrastructure for my small business. The core of the work revolves around hands-on router and switch configuration as well as a smooth, business-grade wireless network rollout. Here’s what I need from you: • Assess the current layout, cabling, and internet feed and propose an optimal topology. • Configure routers and layer-2/3 switches for VLANs, QoS, DHCP, and basic firewall rules. • Design and deploy a secure Wi-Fi network with appropriate SSIDs, encryption, and guest access segregation. • Document the final configuration and provide a simple, step-by-step guide for routine maintenance. • Offer post-deployment support for any tweaks or trou...

I’m working through a series of Information-Technology projects and need a knowledgeable tutor who can guide me specifically in Cybersecurity, with an emphasis on Network security. My current tasks involve hardening small-office networks, configuring firewalls and VPNs, and documenting the risks uncovered through vulnerability scans. I’d like you to: • Walk me through each stage of these projects in live, screen-shared sessions (Zoom or similar). • Provide short follow-up notes or annotated configs so I can review after each call. • Review my deliverables—topology diagrams, security policies, and scan reports—and flag weak spots before final submission. Our collaboration will run a few hours a week, but I’m flexible on scheduling as l...

NNF (CTCL) application in C#. Our Gateway Router login on the CM/FO test market is being rejected the TLS handshake completes, but the connection is closed immediately without any response. Looking for someone with hands-on NSE NNF certification experience who can review our setup and advise on what we are missing.

We are Jobrooms, a UK-based startup looking for an experienced freelance IT Infrastructure & Security Consultant to advise on a secure, cost-effective remote working environment for 3–4 developers. Our Development, QA and Production environments are currently hosted on Microsoft Azure UK South under a Pay-As-You-Go plan. We want developers to carry out their daily work within company-managed virtual desktops, with their work saved securely and access to Production restricted. Our requirements include: - Company-only login, MFA, role-based permissions and separate administrator accounts. - Managed, patched desktops with endpoint protection and restricted software installation. - Restrictions on clipboard, USB, local drives, printing and transfers to personal devices. - Controls...

My cyber cafe has been running successfully for the past three years and now it’s time to streamline everything so customers enjoy faster browsing and flawless printing every visit. The main revenue drivers here are standard internet sessions and walk-in printing jobs, so the assignment revolves around tightening up every point where those two services intersect with hardware, software and the network. Current environment • 12 Windows-based desktops connected through a mixed wired/wireless LAN • Two multifunction printers handling black-and-white and colour output • Standard café‐management software (timer, billing, usage logs) that could use a tune-up Key goals 1. Cut wait times at the print station by eliminating driver conflicts and paper-jam surpri...

I need an experienced field engineer to be on-site at Ninety-One Port Elizabeth, 202 Main Road, Walmer, Gqeberha, Port Elizabeth, 6065, South Africa on Wednesday, 30 September 2026 at 4:30 PM (local time). The sole focus of this visit is to install new Cisco networking gear that will arrive on the day. You will be expected to rack or wall-mount the hardware, run and dress the copper/fibre links, patch into the existing core, apply the basic startup configuration I will supply in advance, and verify end-to-end connectivity before leaving. Please bring the usual tool kit—screwdrivers, cable tester, label printer, laptop with console cable, and any small consumables you routinely use—so we can keep the appointment tight. Deliverables on the day: • Installed and powere...

Mi principal necesidad es fortalecer la seguridad de mi conexión a internet. Busco a alguien que revise la infraestructura actual, identifique vulnerabilidades y realice los ajustes necesarios para proteger todos los equipos conectados. Lo que espero: • Diagnóstico inicial del estado de la red, dispositivos y contraseñas. • Configuración o reconfiguración de router, firewall y cualquier punto de acceso Wi-Fi para blindar la red. • Implementación de buenas prácticas: cifrado WPA3 (si el hardware lo permite), segmentación de redes invitadas, actualizaciones de firmware y políticas de acceso. • Pruebas de penetración básicas que confirmen la nueva solidez de la seguridad. • Informe f...

Deliverables The successful freelancer should provide: Fully working S/MIME configuration on 1 PC Outlook 2021 configuration Successful signed-email test Successful encrypted-email test Successful encrypted attachment test Successful incoming/decryption test Certificate/public-key exchange with external recipient Basic implementation documentation Certificate/private-key backup and recovery guidance Recommendations for future deployment to additional PCs Acceptance Criteria The project will be considered successfully completed when: We can send a digitally signed email fromemail id The external recipient can verify the digital signature. We can send an encrypted email to the external recipient. The recipient can decrypt and read the email and attachments. We can receive a...

Printing from my ERP POS breaks down whenever the tablet tries to reach the network; the job never even reaches the printer. The connection itself seems fine, yet the tablet is hit with permission errors at the network layer. I suspect a mis-configured network permission that blocks the tablet’s traffic to the POS service. Here’s what I need: • Pinpoint why network-level permissions are refusing the tablet’s requests. • Adjust the router, firewall, VLAN or Wi-Fi ACLs so the tablet can reach the ERP POS endpoint without drops. • Validate that receipts print reliably from the tablet afterward. You may use any packet-capture or remote-diagnostic tools you like—Wireshark, nmap, router logs, ERP POS diagnostics—so long as the result is clear: the t...