Hi, I am Sumon, have been working in multinational companies as Server Administrator for last 13 years. Currently, I am planning to build up my career in outsourcing.
Summary of experience:
✔️ Linux:- CentOS | Ubuntu | Debian | Redhat
✔️ Apache | Nginx | LiteSpeed | MySQL | PhpMyAdmin | WHM | cPanel Plesk | VestaCP
✔️ Deployments:- LAMP | LEMP | Node.js | Python | Tomcat | JBoss | RoR
✔️ CMS:- Wordpress | Drupal | Joomla | Mediawiki | Moodle
✔️ Server Provisioning: Chef | Ansible | Shell Script
✔️ Mail Server: Postfix, Sendmail, Exim, Dovecot, HMailServer, OpenDKIM, Spamassassin, PostfixAdmin, Zimbra
✔️ Google GSuite | Microsoft 365 Admin | Sendgrid | AWS SES
✔️Security: IPTables, SELinux, TCP-wrappers, Fail2ban, OSSec,CSF/APF Firewall, Endain, IPcop, PFSense, | IPFire | OpenVPN
✔️ Analytics: Awstats, Webalizer
✔️ Databases: MySQL, MSSql, Postgresql
✔️ Reverse Proxy: Varnish, Pound
✔️ Cloud Platform | AWS | Linode | DigitalOcean | Azure | GCP
✔️ Virtualization: VMware | vSphere (vCenter, ESXi) | VirtualBox | KVM | QEMU, XEN, ProxMOX, OpenVZ,
✔️ High Availability: DRBD | Heartbeat | MySQL Master replication |VMWare ESX Cluster | ProxMox Cluster
✔️ Storage & Network FS: RAID, LVM, ISCSI, StarWind, FreeNAS, NFS, Samba,
✔️ Monitoring: Zabbix, Nagios, Monit, Shell script.
✔️ DevOps | CI/CD | Jenkins | Ansible | Git
✔️ Containerisation | Docker |Kubernetes
✅ I will offer 1 hour of free work to let you try and taste the quality. No strings attached. I am glad to look into your project before we start. Just invite me to a job and i would gladly try making this work. That's because i am interested in long term collaboration.
Windows Server
Google Cloud Platform
NGINX
Amazon S3
VMware Administration
Virtual Private Server
Web Hosting
Amazon EC2
Linux System Administration
Data Backup
SSH
Web Host Manager
Md.Mozzammelul H.
Dhaka, Bangladesh
$20/hr
4.9
4 jobs
Hi!
I am a Network Engineer and system administrator. I have 6+ years of experience working as a system administrator and I am proficient in working on both Windows and Linux-based operating systems. Some of my projects include
1. Active Directory
2. Proxy server
3. File sharing server
4. NTP server
5. Syslog server
6. Mail server
7. Monitoring server(Cacti/Nagios)
8. SMTP server
9. Windows update server
10. ChurchCRM server.
11. OpenVPN both on Ubuntu server and Mikrotik router
12. L2TP, PPTP, IPSec VPN configuration on Cisco and Mikrotik router
I am currently working in the system Engineer team and responsible for Server Administration, Network configuration, Router, and Firewall configuration.
Windows Server
NGINX
CentOS
Microsoft Active Directory
Red Hat Administration
Cisco Certified Network Associate
Network Equipment
MikroTik
OpenVPN
Zimbra Collaboration Suite
Virtual LAN
Cisco Router
Proxmox VE
MD HASANUR R.
Pabna Sadar, Bangladesh
$15/hr
4.9
26 jobs
CEH ( Certified Ethical Hacker).
I am a Professional Ethical Hacker and Expert in Penetration testing and Website Security and Network Scanning
I have 5+ experience in projects ranging from, Bug hunting, penetration testing, network Testing, Website Security, analysis, vulnerability assessment, and testing to investigative and forensic work. I bring high standards and tried and tested methodology with manual bug Hunting and techniques to deliver you professional results.
✅Professional at Bug Bounty Hunting
✅Professional at Penetration Testing
✅System Hacking
✅Network Scanning
✅Professional at API Testing
✅Professional at Android and IOS Penetration Testing
✅Professional in Security Testing
✅Professional at Web Application Security
✅Professional at Vulnerability Assessment
✅Professional at Network Penetration Testing
✅Professional at Hacked site Recover
✅ Professional at Malware Removal/Virus Removal
✅ Website Testing part manually
= Brute Force Attack
= Unauthorized access to card
= Business logic flaws allow the unauthorized transfer of funds
= Unauthorized access to customer data
= Unauthorized access to the example.com website
= Authentication related issues
= Authorization related issues
= Data Exposure
= Smuggling Testing
= Bypass Rate Limit Protection
= Bypass Authentication
= Broken Access Control
= Information Disclosure
= Remote Code Execution (RCE)
= Server-Side Request Forgery (SSRF)
= Subdomain Takeover
= Account Takeover
= Code Execution
= Content Discovery
= Cross-Site Request Forgery (CSRF)
= SQL Injection (SQLI)
= HTML Injection / Content Injection
= Cross-Site Scripting (XSS)
= Command Injection
= Local File Inclusion (LFI)
= Insecure Direct Object Reference (IDOR)
= XML External Entity (XXE)
= Remote File Inclusion (RFI)
= URL Redirection
✅System Testing
1. Password Cracking
2. Privilege Escalation
3. Malware Analysis
4. System Exploitation
5. Post Exploitation
6. Social Engineering
7. Network Sniffing
8. Denial of Service (DoS) Attacks
9. Security Misconfigurations
10. Vulnerability Scanning and Exploitation
12. Exploit Development
✅ Network Scanning
Network Scanning List
1. Network Discovery
2. Port Scanning
3. Vulnerability Scanning
4. Service Version Detection
5. Network Mapping
6. Network Protocol Analysis
7. Wireless Network Scanning
8. SNMP Scanning
9. DNS Enumeration:
10. Network Performance Testing
11. Firewall and IDS/IPS Evasion
12. IoT and SCADA Network Scanning:
13. Cloud Network Scanning
✅ Penetration Testing Tools:
= Metasploit
= BurpSuite Professional
= Nessus Professional
= Acunetix Proffessional
= Nuclei
= Nmap
= FFUF
= Gau
= Waybackurls
= SQLMAP
= wpscan
= OWASP ZAP, etc.
Terms of Services:
• 100% Customer Satisfaction
• Guaranteed Refund if not satisfied
Security Assessment & Testing
Security Testing
Information Security
Penetration Testing
Bug Bounty
Web Testing
Web Application Security
Vulnerability Assessment
Bug Investigation
Website Security
Ethical Hacking
Network Penetration Testing
API Testing
Cloud Security
AI Security
Web Application Audit
Ibrahim K.
Dhaka, Bangladesh
$35/hr
4.8
30 jobs
⭐⭐⭐⭐⭐𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝 𝐄𝐱𝐩𝐞𝐫𝐭 𝐨𝐧 𝐒𝐞𝐫𝐯𝐞𝐫, 𝐒𝐭𝐨𝐫𝐚𝐠𝐞, 𝐕𝐢𝐫𝐭𝐮𝐚𝐥𝐢𝐳𝐚𝐭𝐢𝐨𝐧, 𝐁𝐚𝐜𝐤𝐮𝐩 & 𝐃𝐢𝐬𝐚𝐬𝐭𝐞𝐫 𝐑𝐞𝐜𝐨𝐯𝐞𝐫𝐲, 𝐋𝐢𝐧𝐮𝐱, 𝐖𝐢𝐧𝐝𝐨𝐰𝐬, 𝐊𝐮𝐛𝐞𝐫𝐧𝐞𝐭𝐞𝐬, 𝐂𝐈/𝐂𝐃, 𝐃𝐞𝐯𝐎𝐩𝐬, 𝐌𝐮𝐥𝐭𝐢-𝐂𝐥𝐨𝐮𝐝 𝐀𝐫𝐜𝐡𝐢𝐭𝐞𝐜𝐭
🏆𝟏𝟐+ 𝐘𝐞𝐚𝐫𝐬 𝐨𝐟 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 | 𝐈𝐓 𝐈𝐧𝐟𝐫𝐚𝐬𝐭𝐫𝐮𝐜𝐭𝐮𝐫𝐞, 𝐏𝐥𝐚𝐭𝐟𝐨𝐫𝐦 & 𝐃𝐞𝐯𝐎𝐩𝐬 | 𝐓𝐞𝐜𝐡𝐧𝐨𝐥𝐨𝐠𝐲 𝐀𝐫𝐜𝐡𝐢𝐭𝐞𝐜𝐭
I’m a 𝗣𝗿𝗼𝗳𝗲𝘀𝘀𝗶𝗼𝗻𝗮𝗹 𝗖𝗲𝗿𝘁𝗶𝗳𝗶𝗲𝗱 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿 & 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝘆 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁 with over 12 years of hands-on experiences on IT infra design, deployment, implementation, configuration, migration, support services with below key skill include -
🏆 Enterprise Storage, Server, Backup & Recovery Architecture and Implementation
🏆 Dell EMC, HITACHI, NetApp, HPE, IBM, Pure, Huawei, Lenovo, Fujitsu, SAN/NAS Storage, Administration, Replication, Migration Technologies
🏆 Backup Recovery solution with Commvault, Veritas NetBackup, Backup Exec, Veeam, Acronis, EMC Networker, Data Domain, Avamar, IDPA
🏆 System and Data Migration with SAN Copy, vMotion, P2V, V2P, Rsync, RClone
🏆 Cisco MDS and Brocade SAN Fabric / FC Switch
🏆 Rack and Modular Chassis Server Implementation and Administration
🏆 Synology, QNAP, TrueNAS, Isilon NAS Storage & Open Source Platform deployment
🏆 Linux/Unix, Ubuntu, CentOS Install, Update, File System, LVM, ACL, SSL, Apache, Nginx Web Server Configuration
🏆 Windows Server Install, Active Directory Domain Contoller, DNS, RDS, DHCP, FTP, Web Server, IIS, File Server, Failover Cluster configuration
🏆 Microsoft Hyper-V Install, Replication, HA Cluster, Nutanix, Proxmox, VirtualBox virtualization setup
🏆 VMware ESXi, vCenter Install, Virtual Machine, vSAN Cluster, HA Cluster, vMotion, Workstation setup
🏆 Oracle, MySQL, SQL Database configuration & management
🏆 Azure, GCP, AWS, IBM, OCI, DigitalOcean, Public Cloud resource management, AutoScaling, Load Balancer, VPC, Platform migration, configuration
🏆 Docker, Kubernetes cluster seup, container management, deployement, Azure DevOps, GitHub Actions, GitLab CI, Jenkins, ArgoCD, CI/CD pipeline
🏆 Network Switch, Router, Firewall, Gateway, Access Point, Wireless device configuration with Cisco, Juniper, Fortinet, MikroTik, D-Link, TP-Link, HPE Networking, Aruba, Avaya, Ubiquity, UniFi, Dell Networking PowerSwitch, F5, VPN, Proxy, Packet Tracer Network Design and Configuration
🏆 Batch, PowerShell and Bash Scripting
✅ MY CORE EXPERTISE
💾 Server, Storage & SAN
✔ Dell EMC PowerMax, VMAX, Unity, PowerStore, VxRail, Isilon/PowerScale
✔ Hitachi VSP, HNAS, G-Series, USP, HUS
✔ NetApp AFF, FAS, ASA, EF Series, StorageGRID
✔ HPE 3PAR, Nimble, Primera, Alletra, StoreOnce, MSA
✔ IBM FlashSystem, SVC, DS Series
✔ Pure Storage, Huawei OceanStor/Dorado, Fujitsu, Lenovo, Oracle ZFS
✔ SAN/NAS Design, Storage Migration, Replication, Performance Optimization
✔ Cisco MDS & Brocade SAN Fabric Administration
🗃️Backup, Disaster Recovery & Data Protection
✔ Commvault Backup & Recovery
✔ Veeam Backup & Replication
✔ Veritas NetBackup & Backup Exec
✔ Dell EMC Avamar, Networker, Data Domain, DPS
✔ Cohesity, Acronis, AWS/Azure/GCP Backup
✔ Kubernetes Backup using Kasten K10, Velero
✔ DR Design, Replication, Failover & Recovery Testing
🖥️Virtualization Infra
✔ VMware ESXi, vCenter, vSphere, vSAN, HA, DRS, vMotion
✔ Microsoft Hyper-V, Failover Cluster, Replication
✔ Nutanix AHV
✔ Proxmox VE
✔ P2V, V2V, Live Migration & Infrastructure Consolidation
🐧💻Linux & Windows System Administration
✔ Ubuntu, RedHat, CentOS, Rocky Linux, Debian
✔ Windows Server
✔ Active Directory, DNS, DHCP, IIS, RDS, File Server
✔ Apache, Nginx, SSL, LVM, ACL, Bash & PowerShell Scripting
✔ Server Hardening & Security Best Practice
☁ 𝗠𝘂𝗹𝘁𝗶-𝗖𝗹𝗼𝘂𝗱 & 𝗖𝗹𝗼𝘂𝗱 𝗣𝗹𝗮𝘁𝗳𝗼𝗿𝗺𝘀
❒ Azure – AKS, AVM, App Services, App Gateway, Key Vault, Defender, Sentinel, SQL, Cosmos DB, Blob Storage, Functions, ExpressRout
❒ AWS – EC2, EKS, ECS, Lambda, RDS, DynamoDB, S3, CloudFront, Route53, API Gateway, CloudFormation, IAM, VPC, Direct Connect
❒ GCP – Compute Engine, GKE, Cloud Run, Cloud Functions, BigQuery, Cloud SQL, Firestore, Pub/Sub, Cloud Storage, VPC, VPC peering, Interconnect
❒ OCI – OKE, Compute, Autonomous DB, Exadata, Object Storage, FastConnect, Load Balancer, Vault
❒ Hybrid / Multi-Cloud Networking (VPN, ExpressRoute, Direct Connect, Interconnect)
❒ Hybrid & Multi-Cloud Architecture, Cloud Migrations & Disaster Recovery
⚙ 𝗗𝗲𝘃𝗢𝗽𝘀 & 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻
❒ CI/CD Pipelines: Helm, ArgoCD, GitOps, GitHub Actions, GitLab CI, Jenkins
❒ IaC: Terraform, Ansible, ARM, CloudFormation
❒ Docker & Kubernetes (AKS, EKS, GKE, OKE, On-Prem K8s)
🔐 𝗦𝗲𝗰𝘂𝗿𝗶𝘁𝘆 & 𝗖𝗼𝗺𝗽𝗹𝗶𝗮𝗻𝗰𝗲
❒ IAM, RBAC, Conditional Access, SSO, Key Vault / KMS
❒ Multi-Cloud Security Monitoring (Defender for Cloud, AWS GuardDuty, GCP SCC)
❒ Compliance (SOC2, NIST, ISO 27001, HIPAA, PCI DSS)
❒ DevSecOps & Automated Security Scanning
👉 Let’s connect!
System Administration
Server Administration
Virtualization
Storage Area Network
Storage Array
High Availability and Disaster Recovery
VMware Administration
Backup & Migration
Linux System Administration
Windows Administration
Data Backup
DevOps
Google Cloud Platform
Kubernetes
Cloud Architecture
Mahfuzul I.
Dhaka, Bangladesh
$60/hr
4.9
72 jobs
22+ years in the telecommunications and Software industry from design, development, management, delivery, and lead. Vast experienced focused on solution customization for Cloud Telecommunication System. Specialist in Communication System like Core GSM, IP, SIP, WebRTC, SS7, Radius, Diameter, SMPP, XMPP, SNMP, Sockte, RabbitMQ Message Broker, Software Defined Radios (SDR), and IoT.
Also capable to develop and deliver any communication-related solution.
SNMP
Tech & IT
Product Development
Blockchain
Diameter
FreeSWITCH
Telecommunications Engineering
SMPP
API Development
Project Management Professional
RADIUS
RabbitMQ
System Administration
GSM
Socket Programming
XMPP
Internet of Things Solutions Design
SOAP
Toufik H.
Dhaka, Bangladesh
$50/hr
4.9
107 jobs
I have over 12+ years of practical working experience in VPN (Openvpn, IPSec, PPTP, IPSec/L2TP), Networking (Cisco Nexus, ISE, Juniper, Mikrotik, Ubiquiti) firewall (Sonicwall, Watchguard,Fortigate, Sophos, checkpoint, ASA, Palo Alto), Cloud system (AWS, Digital Ocean, Azure), WAF (F5), Cisco ISE, Mail server (SPF,DKIM,DMARC records) and troubleshooting.
Apart of that have working experience on Azure sentinel, 365 Defender, Defender for Cloud, Nessus
Also I am holding the following vendor certification
1. Cisco Certified Network Associate
2. Red Hat Certificate of Expertise in Server Hardening
3. Red Hat Certificate of Expertise in Server Hardening
4. Red Hat Certified Virtualization Administrator - (RHCVA)
5. Red Hat Certified Engineer (RHCE)
6. Red Hat Certified System Administrator (RHCSA)
7. Red Hat Certified System Administrator in Openstack
8. ISC2 - Certified in Cybersecurity Certification
9. AWS Certified Solutions Architect - Associate
I am interested to work on any project related to VPN, Network and cloud Security, Cisco, VoIP, Asterisk, FreePBX, Elastix, IP Networking, Firewall, Linux system administration, and network/server troubleshooting.
Cisco ASA
Web Proxy
Cisco ISE
Firewall
VPN
Network Security
OpenVPN
Cisco ACI
Palo Alto Firewalls
F5, Inc.
Information Security
Asterisk
FortiGate Firewall
Amazon Web Services
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