Network Security Consultants Untuk Diupah
Menunjukkan 73 hasil
Freelancers Ditaja
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Senior Systems & Security Engineer with 15+ years in enterprise-grade IT. I design, harden, and operate high-availability infrastructure, and I streamline delivery with automation and clean processes. My focus: reliability, security, and clear documentation—so changes are low-risk and handovers are...Senior Systems & Security Engineer with 15+ years in enterprise-grade IT. I design, harden, and operate high-availability infrastructure, and I streamline delivery with automation and clean processes. My focus: reliability, security, and clear documentation—so changes are low-risk and handovers are effortless. Strengths: Infrastructure architecture & operations (Linux/Windows, virtualization, networking) Security hardening, identity & access, monitoring/observability Automation & DevOps practices (CI/CD, config management, IaC) Migrations and upgrades with minimal downtime Concise runbooks, risk-aware planning, and stakeholder-friendly communication Certifications: CompTIA Security+, Microsoft MCSE/MCSA/MCITP Languages: English (C2), German (C1), native Romanian Location: Germany • NDA-friendly • Reliable and responsive kurang
Upah iosifpeterfi
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engkarimismail engkarimismail
$50 USD / jam
✅ Senior Network & System Engineer | Security|VOIPMalaysia✅ About Me I am an experienced IT professional with expertise in server administration, networking, virtualization, and security. My skill set spans managing server operating systems, configuring directory services, implementing DNS/DHCP solutions, and deploying virtualization platforms. I have a strong background in...✅ About Me I am an experienced IT professional with expertise in server administration, networking, virtualization, and security. My skill set spans managing server operating systems, configuring directory services, implementing DNS/DHCP solutions, and deploying virtualization platforms. I have a strong background in firewalls, scripting, containerization, and database management. Additionally, I specialize in mail servers, backup systems, and cloud technologies. With advanced networking skills, including Cisco routing, VLAN management, VoIP/IP telephony, and penetration testing, I am well-equipped to handle complex IT infrastructures. I am dedicated to delivering reliable solutions, ensuring data integrity, and enhancing system performance. ✅Send me now 24/7 Availability Unlimited Revisions Fast Response ✅ Server Operating Systems Windows Server (2003 to 2024) | Ubuntu | CentOS | Debian | RHEL ✅ Directory Services Active Directory | OpenLDAP ✅ DNS and DHCP Windows Server DNS | DHCP | Linux DNS | DHCP ✅ Virtualization Microsoft Hyper-V | VMware ESXi | vCenter | Proxmox VE ✅ File Servers IIS FTP | proftpd | FileZilla | FTP Server | Samba ✅ Web Servers Apache | NGINX | Microsoft IIS ✅ Scripting and Automation PowerShell scripting | Bash scripting ✅ Containers Docker | Windows Subsystem for Linux (WSL) ✅ Backup Systems Veeam Backup | Iperius Backup | UrBackup ✅ Mail Servers Mailcow | Microsoft Exchange (2000–2019) | MailWizz | Postfix | EXIM ✅ Database Servers MySQL | PostgreSQL | MariaDB ✅ Firewalls and Security MikroTik | PFSense | Cisco Firewalls ✅ Networking Skills Cisco Routing and Switching | VLANS | OSPF | VoIP and IP Telephony | Network Penetration Testing Access Control Lists (ACLs) Security (MITM Attack Mitigation) ✅ Recovery Services Password recovery for accounts and routers | Disaster recovery planning ✅ VOIP Service Freepbx | freeswitch | CME | IP TELEPHONY | 3CX SYSTEMS ✅ Cloud Service AWS, DigitalOcean, Hetzner, Azure, Google Cloud Platform, IBM Cloud, Oracle Cloud, Alibaba Cloud, Contabo, Seva kurang
Upah engkarimismail
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✅As a highly skilled and experienced network and system administrator with over 11 years of expertise, I hold notable certifications such as CCNP, CCNA, RHCE, and Certified Ethical Hacker (CEH) . I have established myself as an accomplished network, system, and security engineer, capable of delivering complete...✅As a highly skilled and experienced network and system administrator with over 11 years of expertise, I hold notable certifications such as CCNP, CCNA, RHCE, and Certified Ethical Hacker (CEH) . I have established myself as an accomplished network, system, and security engineer, capable of delivering complete solutions for designing, configuring, automating, and managing network and system projects. My proficiency in using simulation software such as Packet Tracer and GNS3, as well as real-life network and system devices, make me a valuable asset for any project. My few hands-on experiences is : ✅Network Design by MS Visio, Cisco packet tracer, GNS3, and EVE-NG ✅Netacad CCNA and CCNP packet tracer Labs activities, projects design and solution ✅Cisco routers, switches, FTD, FMC, and ASA firewalls. ✅WatchGuard, Palo Alto, CheckPoint Firewall, SonicWall, Fortigate, pfSense, OPNsense, Huawei firewalls. ✅Unifi Enterprise Fortress Gateway, Ubiquiti UDM Pro, Unifi Cloudkey, USG UniFi Firewall , Security Gateway, Switch, and AP devices ✅ Netgear, Huawei, Aruba switch, DrayTek router, TP-Link and others vendor wireless router configurations. ✅Cisco, Tp-Link, Aruba, Fortinet, Ubiquiti, Planet, Huwei switch configurations. ✅MikroTik Routers and switch configuration ✅ SNMP monitoring configuration: Observium, Librenms, Cacti, Nagios core ✅ Cloud Administrator: Azure, AMAZON AWS , Google GCP, OVH Cloud and Digital Ocean, Contabo ✅Hyper-V, VMware ESXi, VMware Workstation, VirtualBox, KVM, and Proxmox. ✅Ubuntu, Red Hat, CentOS, Debian, openSUSE, and Kali Linux distributions. ✅Windows server administration , Active Directory management, Exchange Server administration, DNS configuration ✅Servers: HP Proliant Servers, Dell/EMC Servers, IBM ✅VLSM/subnetting of small to large enterprises ✅VLANs, Inter-VLAN routing, VTP, CDP, Ether-Channel(LACP, PAGP) ✅DHCP, NAT/PAT configuration and IP helper address ✅static and Dynamic Routing protocols (RIP, OSPF, EIGRP, BGP) configuration ✅Layer-3 Redudent/backup links Using HSRP, VRRP ✅Port security, ACL( access list) configuration ✅Network troubleshooting and optimization ✅VPN Configuration Expert (GRE , SSL, IPSEC, PPTP, OpenVPN & DMVPN) ✅Network automation script for any Cisco and FortiGate devices using python ✅Overlay Networks VPN Expertise: Proficient in configuring and managing various overlay network VPNs, including ZeroTier, Tailscale, WireGuard, SoftEther VPN, Netbird , Netmaker, OpenVPN Cloud, I, Twingate and PeerVPN for secure, scalable, and decentralized networking, enabling seamless remote access, team collaboration, and encrypted communications across distributed systems. ✅Cisco Duo: MFA, 2FA, SSO, Identity Security Integration, Windows Logon, RDP, Microsoft AD, VPN Authentication. kurang
Upah touhidecevw
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Hello! I'm Juan Jose C, a full-stack developer with +7 years of experience in building modern web app, game and integrating AI features. I specialize in creating dynamic, scalable solutions with a focus on AI-driven functionality, using technologies like C#, .Net, Core, Angular, React, Next.js, Node.js, Vue.js and...Hello! I'm Juan Jose C, a full-stack developer with +7 years of experience in building modern web app, game and integrating AI features. I specialize in creating dynamic, scalable solutions with a focus on AI-driven functionality, using technologies like C#, .Net, Core, Angular, React, Next.js, Node.js, Vue.js and Tailwind CSS. I also leverage the latest and most popular AI code tools to write fast, efficient, and scalable code, ensuring top-tier performance and innovation in every project. My Main Skills: Frontend: React, Next.js, Vue.js, TailwindCSS, Shadcn Backend: Node.js, Express, Laravel, Python, Django, REST APIs, FastAPI, GraphQL, WebSocket, Socket.io AI & LLMs: OpenAI (GPT-4, ChatGPT), Chatbot, LangChain, Cohere, Pinecone Cloud & Deployment: Vercel, AWS, Firebase Database: MySQL, MongoDB, PostgreSQL, Supabase, Adrant, ChromeDB Tools: Cursor, Lovable, Bolt.new, V0.dev, Zed, Warp, Figma kurang
Upah juanjosec63
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Rashid Tech Solutions is a systems-focused engineering and development practice with over 5 years of hands-on experience delivering reliable, production-ready solutions across software, cloud, automation, and embedded systems. We specialize in projects where multiple technologies must work together seamlessly —...Rashid Tech Solutions is a systems-focused engineering and development practice with over 5 years of hands-on experience delivering reliable, production-ready solutions across software, cloud, automation, and embedded systems. We specialize in projects where multiple technologies must work together seamlessly — software with hardware, cloud with automation, and logic with real-world operational constraints. Our work is driven by solid architecture, clean implementation, and solutions designed for long-term use, stability, and growth. 🔧 Core Capabilities Systems & Full-Stack Development End-to-end design and development of web platforms, backend services, APIs, dashboards, and mobile applications, built for scalability, security, and maintainability. Cloud, DevOps & Infrastructure Architecture and operations across AWS, Azure, and Google Cloud, including CI/CD pipelines, deployments, monitoring, performance optimization, and production hardening. Automation & Integrations Custom automation, workflow optimization, system integrations, bots, and backend processes to reduce manual work and improve operational reliability. Embedded Systems & Industrial Automation Development and integration of embedded systems, IoT devices, electronics, PCBs, PLCs, SCADA, and hardware–software interfaces for industrial and automation use cases. AI & Data-Driven Features Practical AI and machine-learning integrations such as computer vision, OCR, analytics, and intelligent system enhancements — applied where they deliver real, measurable value. Specialized & Custom Solutions Blockchain systems, trading tools, telephony platforms, and other domain-specific solutions when projects require deeper technical customization. 👥 Team & Delivery Model For larger or time-critical projects, I work with a small, trusted technical team, while personally managing and reviewing all work. This ensures clear communication, consistent quality, and a single point of accountability for the client. 🤝 Post-Delivery Support Delivery does not end at handover. We provide clear documentation, support, fixes, and ongoing assistance when required, ensuring systems remain stable, understandable, and easy to maintain over time. Our approach is reflected in consistent positive feedback from previous clients, who value technical ownership, clear communication, and dependable delivery. If you’re looking for a technical partner who thinks long-term and takes responsibility beyond launch, Rashid Tech Solutions is ready to support your project. kurang
Upah rashidamjad
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Hi there, I am networking expert specialist and consultant for more than 8 years, who spend my free time to learn about new technologies in networking, security field to be always up to date. please just ping me on chat to have a short discussion on your project and i will always look for solving your tasks...Hi there, I am networking expert specialist and consultant for more than 8 years, who spend my free time to learn about new technologies in networking, security field to be always up to date. please just ping me on chat to have a short discussion on your project and i will always look for solving your tasks quickly. below is a brief on my experience: Technology Specialist: --------------------- - Can design, implment large scale networking and make exaplanation reports. - Practice on Cisco Packet Tracer, GNS-3, EVE-NG. - Excellent pracitce on VMware WorkStation, Virtual-Box - VPN (IPSEC,IKE v1 or v2 ,L2TP ,OPENVPN, DUO Authentication). - Routing Protocols (BGP, OSPF, EIGRP .. ). - Wrie Technical Reports with excellent and format. Skills and Hands on Experience: ------------------------------- - Cisco devices (routers, switches), routing protocols, IPSEC, Cisco ASA Firewall. - Fortinet Devices: FortiGate, Forti Manager, Forti Analyzer. - wireless (WLC, Access Points): CISCO, Aruba, ubiquiti. - Juniper (M7, M10, MX 480, MX 960) and SRX (300, 500). - Operating Systems: Linux servers (Ubuntu, RedHAT, Debian), windows (Windows server 2012, 2016 ..etc). Regards, Ramy kurang
Upah ramygoda1590
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hello, I am a Cisco Certified Internetwork Expert CCIE#46063 R&S with a UK based education , I have 13 years of extensive IP networking experience, designing, implementing and supporting large service provider networks as well as enterprise networkshello, I am a Cisco Certified Internetwork Expert CCIE#46063 R&S with a UK based education , I have 13 years of extensive IP networking experience, designing, implementing and supporting large service provider networks as well as enterprise networks kurang
Upah ccie7
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udayarpandey2022 udayarpandey2022
$50 USD / jam
IT Infra Solution Architect - DevOps - SecurityNepalLet's keep this short. Anything related to IT: (System/Network/DevOps/Virtualization/Wordpress/Development/Servers/Mail) I can handle them all, period. Ganesh D.Let's keep this short. Anything related to IT: (System/Network/DevOps/Virtualization/Wordpress/Development/Servers/Mail) I can handle them all, period. Ganesh D. kurang
Upah udayarpandey2022
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⚡ Preferred Freelancer | ⚡ 13+ Years Experience in Web Security and WordPress Hello! I am Harwinder Kumar, a seasoned professional specializing in comprehensive Web Security and WordPress. I offer services in Malware Removal, Virus Removal, Ethical Hacking, Internet Security, WordPress Speed Optimization, Websites...⚡ Preferred Freelancer | ⚡ 13+ Years Experience in Web Security and WordPress Hello! I am Harwinder Kumar, a seasoned professional specializing in comprehensive Web Security and WordPress. I offer services in Malware Removal, Virus Removal, Ethical Hacking, Internet Security, WordPress Speed Optimization, Websites Transfer, SSL Installation, WordPress Development, Linux Server Administration and Zen Cart / Drupal / MODX / Moodle / Joomla CMS Upgrades. Achievements: ✅ Cleaned 5000+ websites successfully from malware with security enhancement. ✅ Conducted 1,000+ seamless website transfers. ✅ Completed more than 500 SSL installations. ✅ Optimized speed of 200+ WordPress websites. Services Offered: 1. Malware and Virus Removal (Cleaning Hacked Websites and Servers): ✔ Guaranteed 100% cleanup of websites, including databases from malicious code. ✔ Remediation of WP-VCD malware, backdoors, malicious javascript and conditional redirects. ✔ Specialized solutions for japanese keyword hack, SEO spam / pharma hack, credit card stealers and ecommerce malware. ✔ Google blacklist removal (This site may be hacked, The site ahead contains malware), google deceptive warning fix. ✔ McAfee SiteAdvisor, norton blacklist or any VirusTotal based blacklist fix. 2. Website Security Maintenance: Strategic security enhancements and guidance for future-proofing your digital assets. 3. Website Transfer and Migration: Expert transfer of websites to new hosts or domains for any PHP-based CMS or custom-coded websites. 4. SSL Installation and HTTPS Migration: Seamless migration from HTTP to HTTPS with secure padlock implementation. 5. WordPress Development and Troubleshooting: Comprehensive development and issue resolution, including critical and fatal error fixes. 6. HTTP Security Headers Fix: Implementation of essential security headers to protect your web application from common vulnerabilities and threats. 7. Linux Server Administration: Efficient server management promoting optimal performance and security. 8. WordPress Speed Optimization: Proven methods to enhance website performance following Google PageSpeed and GTmetrix standards. 9. Platform Upgrades: Upgrading Zen Cart, Drupal, MODX, Moodle and Joomla to their latest stable versions. 10. Penetration Testing: Thorough security vulnerability assessments to safeguard your web presence. If you're looking for a trusted partner to secure, optimize and enhance your digital operations, I am here to deliver superior solutions tailored to your needs. Let's collaborate to ensure your website is both secure and performing at its peak! kurang
Upah arfharwinder
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Keselamatan Komputer, Keselamatan Web, Keselamatan Internet, Ujian Penembusan, Penggodaman Etika BertauliahCybersecurity consultant specializing in penetration testing, offensive security, cloud and application security, SOC/SIEM implementation, and ISO 27001 readiness. Expert-level certified with OSCE³, OSED, OSWE, OSEP, OSCP, CISSP, CNVP, PenTest+, and Security+. Published multiple CVEs for real-world vulnerabilities,...Cybersecurity consultant specializing in penetration testing, offensive security, cloud and application security, SOC/SIEM implementation, and ISO 27001 readiness. Expert-level certified with OSCE³, OSED, OSWE, OSEP, OSCP, CISSP, CNVP, PenTest+, and Security+. Published multiple CVEs for real-world vulnerabilities, including CVE-2024-8784, CVE-2024-8945, CVE-2024-8867, CVE-2024-9030, and CVE-2025-3219, demonstrating strong research and testing capability. Providing penetration testing, SOC/SIEM setup, cloud/application security assessments, ISO 27001 support, secure architecture reviews, and vulnerability research - all delivered with clear findings, actionable remediation guidance, and measurable security improvements. As a Security Lead at Bytium LLC, I bring technical leadership, professional experience, and a high standard of cybersecurity practice to every engagement. Let’s work together on your next project. kurang
Upah bfella
