Internet Security Experts For Hire
Showing 97 results
Sponsored Freelancers
-
touhidecevw touhidecevw
$60 USD / hour
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. less
Hire touhidecevw
-
With over 10 years of experience in cybersecurity, I specialize in protecting businesses and individuals from cyber threats. I've worked across industries such as finance, healthcare, and retail, helping clients secure their digital infrastructure with tailored solutions. What I Can Do for You: Web Application...With over 10 years of experience in cybersecurity, I specialize in protecting businesses and individuals from cyber threats. I've worked across industries such as finance, healthcare, and retail, helping clients secure their digital infrastructure with tailored solutions. What I Can Do for You: Web Application Penetration Testing I uncover vulnerabilities like SQL injection, cross-site scripting (XSS), and authentication flaws, ensuring your web applications are secure from attacks. Network Security Assessments I assess your network infrastructure, identifying weaknesses in firewalls, routers, and internal systems to prevent unauthorized access and data breaches. Cloud Security Audits I review your cloud setup to ensure proper configurations, access control, and encryption, keeping sensitive data secure. API Security Testing I help secure your APIs by identifying vulnerabilities like broken authentication, authorization flaws, and data exposure. Mobile Application Security Testing I analyze your mobile apps for security issues, such as insecure data storage and weak encryption, ensuring a safe experience for your users. Forensics & Malware Analysis I investigate suspicious activity and malware across networks, PCs, and mobile devices. My forensic analysis helps track and eliminate threats while providing insights into how the attack occurred and how to prevent future breaches. Vulnerability Scanning & Reporting I provide thorough vulnerability scans and deliver detailed reports with prioritized recommendations, helping you fix issues efficiently. Security Hardening I implement best practices in secure coding, encryption, and multi-factor authentication to protect your systems from future attacks. Compliance & Risk Assessments I ensure your business meets industry compliance standards, such as GDPR, HIPAA, and PCI DSS, while improving your overall security posture. Why Clients Choose Me: Proven Expertise With over 10 years of experience, I’ve secured businesses of all sizes and industries, delivering real results that prevent cyberattacks and strengthen defenses. Tailored Solutions Every business has unique security needs, and I customize my services to fit your specific requirements, ensuring the best protection. Actionable Reporting I don’t just identify risks—I provide easy-to-understand, actionable recommendations so you can address vulnerabilities immediately. Ongoing Support I offer continuous support and guidance, helping you stay ahead of evolving threats and ensuring your security remains strong. Let’s Work Together: Whether you need penetration testing, forensic investigation, malware analysis, or ongoing security assessments, I’m here to help. Let’s discuss how I can provide tailored security solutions to protect your business from cyber threats. less
Hire ahad47
-
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 less
Hire servermaster
-
Hi, I'm a Cyber Security Researcher with practical experience gained through playing CTFs (Capture The Flag), engaging in Bug Bounties, and working as a Pentester. What I can do for you: Web/API (OWASP TOP 10) Pentesting: - Web Applications like WordPress, CMS, CRM, LMS, Full stack, etc. ...Hi, I'm a Cyber Security Researcher with practical experience gained through playing CTFs (Capture The Flag), engaging in Bug Bounties, and working as a Pentester. What I can do for you: Web/API (OWASP TOP 10) Pentesting: - Web Applications like WordPress, CMS, CRM, LMS, Full stack, etc. Internal/External Network Pentesting: - Active Directory Security and Hardening. Cloud Security Audit/Pentesting: - AWS, AZURE, and GCP. Malware Removal: - Windows , Androids , MacOs - Web Shells, Backdoors, and SEO spamming removal. Operating System Hardening: - Windows, Linux, and Mac OS. OSINT (Open Source Intelligence): - Background Checks, Social Media Analysis, Investigating People, Criminal History, etc. - Image Analysis, Reverse Image Searches, Facial Recognition. - Business, Brand, and Organizational Intelligence. - Financial/Fraud Intelligence. - Fact-checking and analysis of disinformation and misinformation. - Cyber Threat Intelligence, Sensitive Gangs Profiling. - Investigating cryptocurrency wallets, NFTs, and transactions. - Critical Infrastructure and Industrial Intelligence. - Dark web's Underground marketplaces, shops, and forums. - Transportation Intelligence (cars, boats, planes, trains), etc. Digital Forensics: - Collecting Network Evidence. - Acquiring Host-Based Evidence. - Analyzing Network Evidence. - Analyzing Log Files. Extreme Privacy and Anonymity: - OPSEC 101. - Computers, Mobile, and Social Media Privacy. - Removing traces of your identities on search engines and various platforms. BOTs: - Telegram, Discord, etc. less
Hire muhammadsm7
-
Hi, My name is Imran Ali working as a Freelance Developer, Coder & Designer for last 15+ years. Completed hundreds of projects on Freelancer. Basic Services Overview: Hacked Websites Recovery: ----------------------------- Can clean malware and fix hacked websites + Apply Security, Firewall for...Hi, My name is Imran Ali working as a Freelance Developer, Coder & Designer for last 15+ years. Completed hundreds of projects on Freelancer. Basic Services Overview: Hacked Websites Recovery: ----------------------------- Can clean malware and fix hacked websites + Apply Security, Firewall for Wordpress Responsive Websites Development: ------------------------------------------------- -- Static Websites (HTML/CSS) -- Dynamic (PHP/MYSQL) -- Wordpress (New Theme Dev, Customizing Themes) Error Fixing: -------------- Can fix bugs/errors on HTML/PHP/WP sites. Scraping Data: ------------------- Use PHP to scrap websites & store data in TXT/CSV/HTML/WP. Content Writing: --------------------- Well researched, Unique, SE friendly, Copyscape passed articles Design: ----------- Logos, Icons, Brochures, Cards, Letter-Heads Designing Amazon/Adsense Websites: ------------------------------------- Amazon Affiliate & Adsense Websites To Earn Money Online Search Engine Optimization: -------------------------------------------- On-Site and Off-Site SEO for more traffic & Higher Conversions less
Hire imranphp
-
KedarInfoLondon KedarInfoLondon
$25 USD / hour
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! less
Hire KedarInfoLondon
-
Network Administration, Internet Security, Web Security, Amazon Web Services, Certified Information Systems Security Professional (CISSP)With over 25 years of experience, I've had the opportunity to work extensively across a broad range of technologies and solutions. My expertise spans: Web Hosting Apache HTTP Server, Nginx, Microsoft Internet Information Services (IIS), LiteSpeed, Caddy, Apache Tomcat Application Servers Apache Tomcat, JBoss...With over 25 years of experience, I've had the opportunity to work extensively across a broad range of technologies and solutions. My expertise spans: Web Hosting Apache HTTP Server, Nginx, Microsoft Internet Information Services (IIS), LiteSpeed, Caddy, Apache Tomcat Application Servers Apache Tomcat, JBoss (WildFly), WebLogic Server, WebSphere Application Server, GlassFish, Oracle Application Server Databases MySQL, PostgreSQL, Microsoft SQL Server, Oracle Database, MongoDB, MariaDB, SQLite File and Mail Servers Samba, vsftpd, ProFTPD, Network File System (NFS), Microsoft Windows Server, Postfix, Sendmail, Exim, Microsoft Exchange Server, Zimbra, Dovecot Proxy Servers Squid, HAProxy, Nginx, Varnish, Apache Traffic Server Virtualization and Containers VMware vSphere, Microsoft Hyper-V, Oracle VM VirtualBox, KVM (Kernel-based Virtual Machine), Docker, Kubernetes, Podman, LXC (Linux Containers), rkt (Rocket), containerd, cri-o, OpenShift, Docker Swarm, Vagrant, Nomad Communication and Collaboration Tools Jabber/XMPP (Openfire), Mattermost, Rocket.Chat, Microsoft Teams, Slack (Enterprise Grid), Discord Media Servers Plex Media Server, Jellyfin, Emby, Wowza Streaming Engine Backup and Monitoring Solutions Bacula, Amanda, Acronis Backup, Veeam Backup & Replication, Nagios, Zabbix, Prometheus, ELK Stack (Elasticsearch, Logstash, Kibana) Directory Services Microsoft Active Directory, OpenLDAP, 389 Directory Cloud Platforms Amazon Web Services (AWS), Microsoft Azure, Google Cloud Platform (GCP), IBM Cloud, Oracle Cloud, Salesforce Cloud, VMware Cloud, Alibaba Cloud Hosting Control Panels cPanel, DirectAdmin, Plesk, Webmin, Virtualmin, ISPConfig, Ajenti, Vesta Control Panel, CentOS Web Panel (CWP), ZPanel Clients can expect robust, scalable, and secure network solutions, delivered with the highest level of professionalism. less
Hire Adminical
-
I am a proficient software engineer with a strong analytical mindset and a comprehensive background in various areas such as penetration testing, networking, cryptography, web development, web scraping, automation, and bug bounties. My expertise includes: ¶- Full-stack Web Development: With proficiency in Django,...I am a proficient software engineer with a strong analytical mindset and a comprehensive background in various areas such as penetration testing, networking, cryptography, web development, web scraping, automation, and bug bounties. My expertise includes: ¶- Full-stack Web Development: With proficiency in Django, Flask, NestJS, Spring Boot, and Ruby on Rails for the backend; and ReactJS, NextJS, and Angular for frontend, I can help bring your web application to life. ¶- Conducting penetration testing, specifically identifying bugs in web applications according to OWASP 10 standards, which can help ensure your website is secure and your data is protected. ¶- Expertise in web scraping using Python libraries such as Selenium, Scrapy, requests, and Beautiful-Soup, which can help you gather valuable data from various websites. ¶- Skilled in automation using Bash/Shell scripting, which can help automate various tasks and improve your workflow. ¶- Proficient in coding with multiple languages such as Python, Java, JavaScript, TypeScript, Ruby, and C/C++, which can help me adapt to any project requirements. ¶- Possessing a profound knowledge of networking concepts such as OSI Model, TCP/IP, UDP, DNS, DHCP, IMAP, HTTP(S), and sockets programming, which can enable me to troubleshoot any networking issues you may encounter. ¶- Cryptography and Hashing Algorithms: My familiarity with cryptography and hashing algorithms can help ensure your sensitive information remains confidential ¶- Hands-on experience in bug bounties and CTF challenges, which demonstrates my ability to identify and solve complex problems. → With my exceptional project management skills, I can ensure that your project is delivered on time and to your satisfaction. So if you're looking for a reliable and talented freelancer, look no further! Hire me today and let me help you bring your project to life. less
Hire hishamyum
-
I am an expert network and security administrator and I have 10 year’s practical working and teaching experience in network and security also i am en expert in data entry jobs and excel Microsoft office. I am a CCNA instructor and I have CCNA, RHCE, RHCSA certifications. I have expertise in CISCO routing and...I am an expert network and security administrator and I have 10 year’s practical working and teaching experience in network and security also i am en expert in data entry jobs and excel Microsoft office. I am a CCNA instructor and I have CCNA, RHCE, RHCSA certifications. I have expertise in CISCO routing and switching, firewall, IPS, ISE, voice and wireless solution from my 10 years’ practical experience. I have also fluency in English and Hindi speaking. I am Expert in GNS3 and Packet Tracer. ===================================================================================== Technical Skills: Good understanding and knowledge of TCP/IP, OSI Layer. L3 technologies: RIP, EIGRP and OSPF and BGP in CISCO 800, 1900, 2900, 2800, 2800, ISR 4300, 4100, ASR 1000 series. L2 technologies: VLAN, VTP, STP, Trunking, HSRP, VRRP, SPAN, RSPAN, DHCP Snooping, Dynamic ARP Inspection, ARP ACL etc in 2900 series and L3 switches. NXOS and ACI: Configure and install CISCO nexus 9k and CISCO ACI solution like Bridge Domain, VRF, end point group tenant etc. Cisco ASA and Next Generation Firewall: ACL, NAT, Transparent Mode, Multiple context and Failover (Active/Active, Active/Standby) Site-to-Site VPN, Remote Access VPN and SSL VPN. Cisco Firepower IPS and Firepower Management Center (FMC): ACL, NAT, Intrusion policy, AVC, Malware & File Policy, Site-to-Site VPN, Remote Access VPN and SSL VPN etc. F5 Load Balancer and ASM: Installation and configure F5 BIG-IP Local Traffic Manager (LTM) load balancer and Application security manager. CISCO CUCM: Install and configure Cisco Unified Communication Manager 9.0 and 12.4. Mikrotik Router: OSPF, BGP, NAT, DHCP, L2TP, IPSEC, PPP, Firewall etc CISCO WEB and Email Security Appliance: Install and configure CISCO ESA and WSA So you are requested to first discuss the project and requirements and after being satisfied please awarded me with the work. And definitely work will be delivered in time and in best quality. Thanking You Kazi less
Hire rifat0103
-
engkarimismail engkarimismail
$30 USD / hour
✅ 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 less
Hire engkarimismail
