Internet Security Experts для найму
Показано 110 результатів
Спонсовані фрілансери
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About me I have worked over 20 years at IT and telecom companies at following positions: it support, system administrator, applications administrator and monitoring administrator expert. I am "System Administration and IT Infrastructure Services" certified. I follow KISS methods. I understand OSI layer. With me is...About me I have worked over 20 years at IT and telecom companies at following positions: it support, system administrator, applications administrator and monitoring administrator expert. I am "System Administration and IT Infrastructure Services" certified. I follow KISS methods. I understand OSI layer. With me is easy to setup systems. I am not picky about what systems to use but i do have experience what to use. I know following operating systems + distros: debian, ubuntu, gentoo, suse, redhat, centos, rocky linux, almalinux and arch linux, freebsd, netbsd, openbsd, sun solaris plus ms windows servers. I also know following systems: Web servers: Apache, Nginx, Lighttpd, Litespeed, Hiawatha. Javascript: nodejs,npm Java web servers: Tomcat, Jrun, Jboss Proxy systems: Haproxy, Varnish, Squid. DB servers: MySQL (and forks, including MariaDB), PostgreSQL Mail systems: Postfix,exim,dovecot.. and implementing: DKIM, SPF, MX, DMARC. Monitoring systems: Nagios, zabbix, cacti, grafana. SMS: SMSC, Kannel DNS: Bind, Djbdns, Dnsmasq. VPS: Vmware, Hyper-v, Proxmox, bhyve, kvm, xen, openstack.. Containers: docker, lxc, jail, kubernetes Cloud providers: AWS, Digitalocean, Azure.. My knowledge does not stop here. I troubleshoot easily. Let's chat Please see my reviews of my previous works.. PS! With my bid you will get one week free support for work done менше
Найняти servermaster
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As a passionate Cyber Engineer, I bring a deep commitment to safeguarding and optimizing IT infrastructures. With years of hands-on experience, I specialize in Linux server administration, network security, and cutting-edge cybersecurity practices. I'm driven by the challenge of designing and maintaining systems that...As a passionate Cyber Engineer, I bring a deep commitment to safeguarding and optimizing IT infrastructures. With years of hands-on experience, I specialize in Linux server administration, network security, and cutting-edge cybersecurity practices. I'm driven by the challenge of designing and maintaining systems that are not only efficient but also resilient against threats. Key Strengths: Linux & Proxmox Expertise: I've honed my skills in Linux, especially in Debian, Ubuntu and Proxmox environments, where I ensure systems are not just operational but optimized for peak performance. My hands-on experience helps me keep everything running efficiently, with a focus on reliability. Network Security & VPNs: I'm skilled in crafting secure network setups, including advanced Tailscale, Wireguard and Openvpn VPN configurations, to ensure your data is always protected and your connections are reliable. Cybersecurity: With a Bachelors' in Information Technology, a SOC analyst certification and a keen eye for security, I'm dedicated to identifying risks before they become issues. I implement robust security measures tailored to your specific needs, ensuring compliance and peace of mind. SIEM Implementation: I'm passionate about building comprehensive Security Information and Event Management (SIEM) solutions, integrating tools like Wazuh, Graylog, and OpenSearch to give you real-time insights and control over your environment. Automation & Scripting: I love making things easier through automation. Whether it's Python scripts or shell scripting, I streamline processes to save time and reduce errors, so you can focus on what really matters. Problem-Solving: I thrive on solving tough challenges. When issues arise, I'm quick to diagnose and resolve them, ensuring your systems stay up and running with minimal disruption. I thrive in fast-paced environments where precision and security are paramount. I'm excited to collaborate with clients who value precision and security in their IT environments. Together, we can build and maintain systems that are not only reliable but also secure and future-ready. менше
Найняти vincczen
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touhidecevw touhidecevw
$60 USD / год.
Network & System Specialist|CCNP|Fortinet|RHCE|CEHBangladesh✅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. менше
Найняти touhidecevw
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Your search for the perfect freelancer ends here! As a computer engineer with over two decades of experience in the mainstream IT industry, I can deliver a wide range of hi-tech services including: ✅ Linux system administration (Ubuntu, Debian, Red Hat, CentOS, and more) ✅ Cloud computing (AWS, GCP, Oracle Cloud,...Your search for the perfect freelancer ends here! As a computer engineer with over two decades of experience in the mainstream IT industry, I can deliver a wide range of hi-tech services including: ✅ Linux system administration (Ubuntu, Debian, Red Hat, CentOS, and more) ✅ Cloud computing (AWS, GCP, Oracle Cloud, DigitalOcean, Azure, and more) ✅ Website, server, and email migration ✅ Cybersecurity consulting ✅ Malware removal and security hardening ✅ Various CMS and E-commerce solutions and troubleshooting (WordPress, Joomla, Shopify, osCommerce, Zen Cart, Magento, MediaWiki, phpBB, and more) I work solo, and known among peers for my fast turnaround time and ability to fix difficult problems. Where others have failed, I will succeed. ✌️ My credentials include multiple certifications from Google, Microsoft, CompTIA, Cisco, AWS, cPanel, Plesk, MongoDB, (ISC)², Fortinet, and more. These certifications reflect hundreds of hours of training and real-world practice, making me uniquely qualified to handle your IT challenges. As of 2014, I am part of the Preferred Freelancer Program, the elite top 1% on this platform. As of 2022, I am a Freelancer Ambassador, tasked with special duties including moderating the community groups. My timezone is GMT +6, though I work round-the-clock to cater the needs of my clients in over 70 countries worldwide. Click on the "Contact" button now to get started. If I have bid on your project, just click that "Award" or "Chat" button. I look forward to working with you! Notes for my first-time clients: ☑️ I have undergone a thorough and rigid identity verification process to receive the blue verified badge. This makes me more trustworthy when dealing with confidential data. ⛔ I do not work through remote access software such as TeamViewer or AnyDesk. ⛔ I do not "Accept" projects until verifiable login credentials are provided and verified. менше
Найняти Ekushey
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I'm a Professional WordPress Developer, Speed Optimizer & Bug Fixer. My Skills Are As Follows: ✅ WordPress Website Design/Development/Updating :- I will design and develop a professional, eye-catching & modern WordPress website :- 100% Mobile Responsive :- Customized Design :- Supporting Page builders like...I'm a Professional WordPress Developer, Speed Optimizer & Bug Fixer. My Skills Are As Follows: ✅ WordPress Website Design/Development/Updating :- I will design and develop a professional, eye-catching & modern WordPress website :- 100% Mobile Responsive :- Customized Design :- Supporting Page builders like Elementor, Divi, WP bakery, Oxygen etc My Speciality : ✅ WordPress Speed Optimization :- I will optimize site to make it load under 2 seconds of loading time. :- 90%+ Score & Well optimize on Google page speed ( Mobile + Desktop ) :- A+ Grade on Gtmetrix for permanent :- I optimized almost 900+ websites and gave my clients 100% satisfaction ✅ WordPress Bug Fixing :- I will quickly fix any type of issue on a WordPress Site. (Theme issues, Plugins conflicting, Fatal error, Update issue, Cache issue, Cloudflare issue, 5xx timeouts, 4xx errors, Critical error, Database error, WooCommerce issues, Malware attack, Japanese keywords, Website Transfer, SEO issue, Website down, Menu Issues & Many More...) ✅ Why Hire Ali A? :- 7+ years experience in WordPress, PHP, CSS, HTML/HTML5, Javascript, ETC :- 100% Client Satisfaction :- Excellent Communication (availability - 24/7) :- Fluent in English/Spanish and ready to start as asked. менше
Найняти AliAsif4856
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KedarInfoLondon KedarInfoLondon
$25 USD / год.
Highly Recommended ⭐ TOP 1% ⭐ Verified by FL StaffIndiaHi, We are full-stack developers here on Freelancer. We've worked on everything from frontend to backend to middleware, building applications, and solutions that have allowed my clients to put out the best possible web products possible. We are fluent and experienced in a number of different languages, technologies,...Hi, We are full-stack developers here on Freelancer. We've worked on everything from frontend to backend to middleware, building applications, and solutions that have allowed my clients to put out the best possible web products possible. We are fluent and experienced in a number of different languages, technologies, and frameworks, including (but not limited to): o Magento o Power BI o Data analysis o UI/UX design o SEO o Android/iOS o Javascript o Kotlin o Angular o Odoo o PHP o Node.js o REST API Development o RabbitMQ o Wordpress o HTML o CSS o GitHub o BitBucket This is not a full list, so please feel free to reach out about any software or language needs your project specs to require. With my team of 30, I've created some wonderful projects, including a fully-developed website for a Jewellery store client and a Bitcoin project that required full-scope functionality (wallet, trading, withdrawals, etc.). We've worked with some fantastic clients and have developed a wonderful amount of knowledge and expertise through them. If you're interested in working with my team and I, please reach out! We're always quick to respond and are available 24/7, and can't wait to work with you! менше
Найняти KedarInfoLondon
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Remote Helpdesk Support for Notebook PCs, Servers administration and Management (Windows and Linux): IT Support and Technical Remote Help Desk (Google IT Support, IBM Technical Support).Windows base and Linux base Operating Systems, Domain Controller, Additional Domain Controller, Proxy server Squid, Virtual Private...Remote Helpdesk Support for Notebook PCs, Servers administration and Management (Windows and Linux): IT Support and Technical Remote Help Desk (Google IT Support, IBM Technical Support).Windows base and Linux base Operating Systems, Domain Controller, Additional Domain Controller, Proxy server Squid, Virtual Private Network. Cybersecurity Specialist: Certified in Cybersecurity (ISC)² , Introduction to Cyber Security - New York University, Networking and Security Architecture with VMware NSX, Google Cyber Security, IBM Cybersecurity Server Virtualization: Vmware ESXI, VMware Workstation, Oracle Virtual Box, Windows Hyper-V Networking Infrastructure Management: LAN and WAN, Wireless Networking (Access point, Wireless Controller, TP-link, Dlink, Cisco) Virtualization and Cloud Management Platform: VMware vSphere, Vmware Vcenter Server, Cloud, Azure, Amazon, Monitoring Solutions: Uptime Robot, Fresh ping End Point Security: Windows Defender, Kaspersky License Backup & Disaster Recovery: Acronis, VMWare Vcenter Server, Reports Methodology and Project Management (IBM Project Management): Research phase designing and completing the complete phase. Certifications: OCP DBA Oracle, CCNA Emerging Systems, Redhat Linux, IBM Technical Support, Google IT Support, Google Cyber Security, IBM Cybersecurity, Microsoft 365 Specialization, Information Technology (IT) and Cloud Fundamentals IBM, IT Fundamentals for Cybersecurity (IBM), Web Design for Everybody: Basics of Web Development & Coding - the University of Michigan, Certified in Cybersecurity (ISC)² , Introduction to Cyber Security - New York University, Networking and Security Architecture with VMware NSX менше
Найняти farazpak
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massabimran45 massabimran45
$10 USD / год.
Ethical Hacker | Cybersecurity | Blockchain ExpertPakistanІнтернет-безпека, Android, Blockchain, Certified Ethical Hacking, Certified Information Systems Security Professional (CISSP)? Expert Ethical Hacker & Cybersecurity Specialist | Blockchain & Smart Contract Consultant | AI Solutions Architect for Security With a solid foundation in ethical hacking, cybersecurity, blockchain development, AI, and smart contracts, I bring a comprehensive approach to securing and advancing digital assets and...? Expert Ethical Hacker & Cybersecurity Specialist | Blockchain & Smart Contract Consultant | AI Solutions Architect for Security With a solid foundation in ethical hacking, cybersecurity, blockchain development, AI, and smart contracts, I bring a comprehensive approach to securing and advancing digital assets and systems. I’m dedicated to safeguarding businesses by detecting vulnerabilities, strengthening defenses, and leveraging cutting-edge AI technologies to proactively address emerging threats. As a certified ethical hacker (CEH, CISM, CISSP), I excel at penetration testing, vulnerability assessments, and network security. I’ve successfully worked with businesses to protect sensitive data, prevent cyber-attacks, and ensure compliance with industry standards. My approach is rooted in deep technical expertise combined with real-world experience, having contributed to bug bounty programs for major platforms like Mastercard, LinkedIn, Binance, and crypto.com. In the fast-evolving world of blockchain and cryptocurrency, I specialize in smart contract audits, blockchain security, and decentralized finance (DeFi). From ensuring secure code in Ethereum-based smart contracts to implementing blockchain solutions for secure transactions, I help clients navigate this advanced landscape with confidence and security. I’m proficient in analyzing and mitigating risks in blockchain technology, helping clients avoid costly vulnerabilities and build trust with their users. My expertise extends into AI-powered cybersecurity solutions—an area I’m passionate about. By applying machine learning and AI algorithms, I enable proactive defense mechanisms that can predict, detect, and respond to cyber threats in real time. This advanced skill set in AI-driven security ensures my clients are always one step ahead. ? Services I Offer: - Ethical Hacking & Penetration Testing - Blockchain & Smart Contract Security - AI Solutions for Cybersecurity - Network & Application Security - Data Privacy & Compliance - Digital Forensics & Risk Management Let's secure your digital future with innovative, robust, and AI-driven solutions. менше
Найняти massabimran45
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⚡ Preferred Freelancer | ⚡ 12+ Years Experience 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 Upgrade. Over...⚡ Preferred Freelancer | ⚡ 12+ Years Experience 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 Upgrade. Over the last 12 years, I Have Worked on 5000+ Websites Security (Cleaning from Malicious Code and Hardening Security), 1000+ Websites Transfer, 200+ WordPress Websites Speed Optimization (Delivered Results As Per Google PageSpeed Insights, GTmetrix) and 500+ SSL Installs (Including HTTP to HTTPS migration). Service Description: 1. Malware / Virus Removal from Websites (Cleaning Hacked Websites) and Servers. ✔100% Malware Cleanup Including Database Clean ✔Japanese Keyword Hack, SEO Spam / Pharma Hack Fix ✔Credit Card Stealers and Ecommerce Malware Fix ✔Google Blacklist Removal (This Site may be Hacked), Google Deceptive Warning Fix ✔McAfee SiteAdvisor, Norton Blacklist or Any VirusTotal Based Blacklist Fix ✔WP-VCD Malware, Backdoor / Malicious Javascript / Conditional Redirects Fix 2. Website Security Maintenance (Implementing Future Security Measures and Guiding How to Maintain Security for the Future). 3. Website Transfer/Migrate to New Host / Domain (Any PHP-based CMS or Custom-coded Website). 4. SSL Install, HTTP to HTTPS Migration with Secure Padlock. 5. WordPress (Websites Development and Troubleshooting Which Includes Fixing Critical Error / Fatal Errors). 6. Linux Server Administration. 7. Optimize and Increase the Speed of WordPress Websites. 8. Zen Cart / Drupal / MODX / Moodle / Joomla Upgrade (Upgrade to the Latest Stable Version). 9. Penetration Testing (Checking Websites for Security Vulnerabilities). менше
Найняти arfharwinder
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engkarimismail engkarimismail
$25 USD / год.
✅ Senior Network & System Administrator | SecurityMalaysia✅ 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 менше
Найняти engkarimismail
