System Administrators Για Πρόσληψη
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Προβολή 386 αποτελεσμάτων
Χορηγημένοι Freelancer
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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: debian,ubuntu,gentoo,suse,redhat,centos 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 λιγότερα
Πρόσλαβε τον/την servermaster
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MSc Degree in Computer Sciences. 15+ years experience on hands in network designing, implementation, optimization, integration, security, and troubleshooting. I've experience on the following too: -Cisco, Juniper, Mikrotik,Ubiquiti,Sonicwall,Palo Alto ,Dell, HP, Aruba,Alcatel, Fortigates -VMware, vcenter...MSc Degree in Computer Sciences. 15+ years experience on hands in network designing, implementation, optimization, integration, security, and troubleshooting. I've experience on the following too: -Cisco, Juniper, Mikrotik,Ubiquiti,Sonicwall,Palo Alto ,Dell, HP, Aruba,Alcatel, Fortigates -VMware, vcenter 5.x/6.x/7.0.x -Xenfarms virtualizations.Xen Desktop and XenApps,Citrix. -Windows 2k8R2/2k12r2/2k16/2k19 -Linux servers : CentOS 5.x -9.x /DebianOS/SUSE/RHEL -Proxmox / Clonezilla -Telephony systems : Asterisk/Grandstream -SNMP monitoring : Observium/Librenms/Cacti -Call Centers : Goautodial/Vicidial/OSdial/Issabel PBX/Freepbx -integrations: SugarCRM / Suite CRM -Zimbra/OwnCloud/Nextcloud integration Collabora online -Roundcube/ squiremail /postfix relays with AWS SES -OVH server / Hetzener server / Aruba hosting /Contabo -SSL / EV-SSL installation /OpenSSL -ProxySQL/Mysql/MariaDB/ Percona /Postgres -Plesk / Magento1/ Magento2 / Joomla3 and Joomla4 / Webmin -bugzilla/confluence/jira/trello setup -Redis/Varnish Cache -Nginx load balancers / apache load balancers -Apache/Nginx optimizations for heavy load/heavy traffic websites. -Cloudflare configurations and adaptations -AWS EC2/ RDBS/Gateways/VPCs -AWS EC2 infrastructure to on-prem. connections via VPN over BGP -directus installations -openvpn installation and implementations on mikrotik/pfsense or vm. Both client and server side. -personalized backups via bash scripts and cronjobs. λιγότερα
Πρόσλαβε τον/την vinskendaj
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AWS Certified Solutions Architect with more than 10 years of system admin experience. We Provide Business Solutions such as - Custom Wordpress Websites - Laravel and CodeIgniter websites creation and modification - Super fast website migrations (Wordpress, Moodle, Magento etc.) - DNS related issues and Email...AWS Certified Solutions Architect with more than 10 years of system admin experience. We Provide Business Solutions such as - Custom Wordpress Websites - Laravel and CodeIgniter websites creation and modification - Super fast website migrations (Wordpress, Moodle, Magento etc.) - DNS related issues and Email migrations (imap to imap, office365 to Gsuite etc.) - Installation of all panels (cpanel, centoswp, vestacp, cyberpanel, plesk, openlitespeed etc.) - Advanced AWS Architecture consultation/implementation and Google Cloud , Microsoft Azure, Alibaba Cloud, Digital Ocean and Linode server deployments - Troubleshooting Websites/servers (linux) - Git implementation / integration with existing software flow - Python GUI Applications/ Web Scraping Our completed projects speak of our skills and feedback from the employers showcase our ability to deliver on time, every time. "Never Hire for Skills. Hire for Passion. Skills are cheap, Passion is hard to come by" λιγότερα
Πρόσλαβε τον/την yashaswini510
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Individual Freelancer, having 10+ years of experience as a Linux/Windows System Administrator, Devops and Cloud Engineer. I am well experienced in System Administration, so including but not limited to: Mail Server: Zimbra, postfix, sendmail, PowerMTA Web Server: Apache, Tomcat, Nginx Scripting: shell...Individual Freelancer, having 10+ years of experience as a Linux/Windows System Administrator, Devops and Cloud Engineer. I am well experienced in System Administration, so including but not limited to: Mail Server: Zimbra, postfix, sendmail, PowerMTA Web Server: Apache, Tomcat, Nginx Scripting: shell scripting Virtualization: KVM, VMware, Citrix Xen Server, VMware Esxi, Proxmox, Advanced KVM command-line Security Compliance: PCI-DSS, DISA STIGs. Devops Tools: Docker, Docker-compose, Jenkins, GitHub,Vagrant, Vagrant with Docker as provider , Ansible, Foreman Network: Router configuration of cisco router, modem. IP subnetting. Database: Mysql, Postgresql, Oracle, MS-SQL Accounting: Tally 6.3, Tally ERP 9 on Linux Operating System: Debian-{8,9,10}, Centos-{3,4,5,6,7}, Ubuntu-{12,14,16,18,20.04,22.04}, Windows server -{2003, 2008, 2012, 2016, 2019,2022} Private cloud: Eucalyptus (Ubuntu Enterprise cloud) Cloud: AWS, Gcloud, Azure create VPC, public-private subnet, route table, Internet gateway, network acl, amazon ec2 instance Migration, updation. ERP: ERPnext Multitenant, ERPnext in Google Cloud K8s cluster Log Server: Solarwind Kiwi syslog Domain Server: Windows AD, Samba4 Server provisioning and PXE installation for Linux and Windows. Source code Compilation and Cross compilation for various architecture. Server Administration, Webhosting, Web migration, Web and DB performance tuning, SSL Certificate Installation, Shell scripting, Deployment of various software and server, Mail server etc. Postgresql cluster, high availability, Load balancing. Master-master Replication. Linux Distros: Kiosk live image. FFMPEG, v4l2loopback, Proxy: Haproxy λιγότερα
Πρόσλαβε τον/την android2014213
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Top 1% in the Freelancer.com Community. I am excited to offer 14 years of solid experience in Physical & Virtual Server & Networking Platforms, System Administration, Network Administration,Managing Telecommunications Networks and Technical Strategy. Below are a few of my strong assets for your...Top 1% in the Freelancer.com Community. I am excited to offer 14 years of solid experience in Physical & Virtual Server & Networking Platforms, System Administration, Network Administration,Managing Telecommunications Networks and Technical Strategy. Below are a few of my strong assets for your business: - Microsoft(Active Directory, DNS,DHCP, RDS,SQL Server(DB Admin),SharePoint, - Hyper-V, Exchange(All Versions &O365)Azure) - VMWare (ESXi, VCenter) - Citrix (XenApp, XenCenter) - Antivirus(Symantec(SEP),Mcafee(EPO),Kaspersky) - Linux (Ubuntu, CentOS,Debian) - Cloud(MS Azure,AMAZON AWS ,Google GCP,OVH and Digital Ocean) - Storage(Synology,QNAP,FreeNAS,WD,Dell and HP) - VOIP ( Avaya,3CX,Yeastar,XCally,GrandStream & FreePBX) - Firewalls (Fortinet, Sonicwall, Sophos, ASA,WatchGuard&PFSense) - Wireless(Cisco,Unify,Grandstream,Fortigate) - Routers (Cisco, Ubiquiti) - Servers (HP Proliant Servers) & (Dell/EMC Servers) I am happily available anytime using secure remote support or walk you through the steps via Freelancer chat .I am looking to show each client my worth to build a long relationship. Get started by clicking on "Hire Me" λιγότερα
Πρόσλαβε τον/την RafimKs
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I have 5 years of experience deploying and maintaining the following: ✅ Server Operating Systems: Windows Server 2003 to 2022, Ubuntu, Debian, RHEL, CentOS. ✅ Directory service: Active Directory, OpenLDAP. ✅DNS, DHCP: Windows Server DNS, DHCP and Linux DNS, DHCP services. ✅ Virtualization: Microsoft® Hyper-V,...I have 5 years of experience deploying and maintaining the following: ✅ Server Operating Systems: Windows Server 2003 to 2022, Ubuntu, Debian, RHEL, CentOS. ✅ Directory service: Active Directory, OpenLDAP. ✅DNS, DHCP: Windows Server DNS, DHCP and Linux DNS, DHCP services. ✅ Virtualization: Microsoft® Hyper-V, VMware Hypervisors (ESXI, vCenter), Proxmox, VirtualBox. ✅ Cloud Computing Platforms: AWS Amazon Web Services, Microsoft®, Google Cloud Platform(GCP). ✅ Self-Hosted Clouds: NextCloud, OwnCloud, Seafile. ✅ File servers: IIS FTP, proftpd, FileZilla FTP Server, SAMBA. ✅ Web servers: IIS, APACHE, NGINX ✅Scripting: PowerShell scripting, Bash Scripting ✅Containers: DOCKER, Windows Subsystem for Linux (WSL). ✅Backup Systems Veaam Backup, Iperius Backup, UrBackup. ✅ Mail servers: POSTFIX, EXIM, Microsoft Exchange 2000 to 2019, QMAIL ,Zimbra ,Mail Enable , SmarterMail, hMail. ✅ Database servers: MySQL, PostgreSQL ✅ Firewalls: Windows firewall,ISA/Forefront TMG, MikroTik, PFSense, Zywall and other Routers; ✅ Data Storage Systems: Netapp, FAS, EMC, VNX; ✅NAS: FreeNAS, TrueNAS ,Synology, QNAP, Buffalo ✅ Monitoring ZABBIX, CACTI, NAGIOS ✅ Hosting Panels: PLESK, cPanel, CyberPanel ✅24 hours availability ✅Unlimited revisions ✅Fast response Microsoft® Certified ** MCSA | MCSE | MCT ** λιγότερα
Πρόσλαβε τον/την AZTURK1
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As a software engineer, I specialize in creating efficient and reliable solutions for a variety of needs. With a background in cloud technology, I am well-versed in utilizing the latest tools and platforms to maximize performance and scalability. In addition to my technical skills, I am also able to provide virtual...As a software engineer, I specialize in creating efficient and reliable solutions for a variety of needs. With a background in cloud technology, I am well-versed in utilizing the latest tools and platforms to maximize performance and scalability. In addition to my technical skills, I am also able to provide virtual assistance to help with a wide range of tasks. I can work as a data entry operator with great efficiency and accuracy. With a keen attention to detail and a commitment to delivering high-quality results, I am confident in my ability to help you achieve your goals. Whether you need help with a specific project or ongoing support, I am here to help. λιγότερα
Πρόσλαβε τον/την jinufeb14
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amprosolutions amprosolutions
$20 USD / ώρα
IT & Networks | Web & App Development | E-CommercePakistanThank you for having a glance at my profile. I am Amaan Malik, a professional and experienced IT Consultant with over 9 years of successful and proven record in the IT industry. My aim is to grow businesses to the next level by providing high-quality IT services. I am providing the following services to businesses...Thank you for having a glance at my profile. I am Amaan Malik, a professional and experienced IT Consultant with over 9 years of successful and proven record in the IT industry. My aim is to grow businesses to the next level by providing high-quality IT services. I am providing the following services to businesses and individual clients. => COMPUTER NETWORKS > Network administration, network monitoring > Network support level 1/2/3, managed services on monthly subscription/SLAs > Network designing, HLDs, LLDs, Network diagrams on MS Visio > Network configurations and testing > Network troubleshooting > Technical proposals, RFPs > Configuration, provisioning, and testing of VoIP phones. > Platforms: Juniper (SRX Series, EX Series, MX Series, Junos space), Aruba (ClearPass/WLAN), Cisco (routers/switches/firewalls/WLAN/ISE), Ruckus WLAN, Fortinet firewalls, Whatsup gold, Cisco IP phones SPA series > Expertise: Routing protocols (OSPF, EIGRP, RIP, BGP), STP, RSTP, VLANs, DNS, DHCP, MPLS, VRRP, HSRP, NAT/CGNAT, PAT, ACLs, port forwarding => SYSTEM SERVICES > System administration, system support, desktop support on monthly subscription/SLAs > OS installation, software installation > Server installation and configurations > Chat applications installation on Linux servers > Virtualization, Virtual machines setup > Installation and configuration of VoIP/PBX on Linux servers. > Installation and configuration of service desk solutions of Jira and ManageEngine. > Platforms: Linux (Ubuntu, CentOS, Debian), Windows servers (R2012, R2016, R2019), Active Directory, Microsoft Exchange, Sharepoint, MS Teams, Azure AD, Jira, Confluence, Miro, Zoho, Rocket chat, Hyperledger, VMware, FusionPBX, Docker, ManageEngine Service Desk Plus Cloud => WEB DEVELOPMENT > Website design and website development > Payment integrations > Theme installation/plugin installation > Custom website development > Website content > Website optimization > Complete website SEO > Website maintenance on monthly subscription > Platforms: WordPress, Wix > Web programming: PHP, HTML, CSS, Laravel => APPLICATION DEVELOPMENT > Android apps > iOS apps > Hybrid apps > Desktops apps > Web applications > App publishing on app store and play store > Expertise: JAVA, Kotlin, Flutter, Reactnative, Firebase => E-COMMERCE > Dropshipping websites > Single product store > Custom e-commerce store > Product Listing > Complete store SEO > Store optimization > Platforms: Shopify, OpenCart, Prestashop, Woo-commerce I have always satisfied my past clients with my work. That’s why all of them gave me a five-star rating which of course is a huge achievement for me. I always meet deadlines and never hesitate to make the best use of my skills and knowledge in order to complete a project successfully. Feel free to contact me any time. λιγότερα
Πρόσλαβε τον/την amprosolutions
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I have been working as Network And Security Engineer for 10 years, i was deployment many services and many location. =====>Technical Skills<===== - Routing Protocol, Static, OSPF, BGP, EIGRP. - Tunneling Protocol (IPSec, OpenVPN). - Windows Server (Domain controller, GPO, ADFS, migration domain, SCCM) - Linux Server...I have been working as Network And Security Engineer for 10 years, i was deployment many services and many location. =====>Technical Skills<===== - Routing Protocol, Static, OSPF, BGP, EIGRP. - Tunneling Protocol (IPSec, OpenVPN). - Windows Server (Domain controller, GPO, ADFS, migration domain, SCCM) - Linux Server Administration (Cloud/VPS, DevOps) - Design small, medium to large scale enterprise networks. - Layer 2 Solution (VLAN, Spanning Tree, LACP). - Wifi Solution and DHCP. - Endpoint Security Solution. - Vulnerability Asessment. - Threat Hunting. - Incident Response. - Web Server (Loadbalancer with HaProxy, SSL Deployment) =====>Hands-On<===== - Juniper. - Cisco. - Palo Alto. - Fortinet. - Qualys - Big IP F5. - Sangfor IAM. - Kaspersky Security Center. - Pfsense. - Mikrotik. - OpenWRT - Unifi λιγότερα
Πρόσλαβε τον/την gunturcool14
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I have experience in deploying and maintaining of: ✅ Cloud Computing Platforms: AWS Amazon Web Services,Microsoft AZURE, Google Cloud (GCP). ✅ Server Operating Systems: Windows Server 2003-to-2012R2, Windows Server 2016 Amazon Linux, Debian, RHEL, CentOS, Ubuntu. ✅ Web servers and servlets containers: IIS,...I have experience in deploying and maintaining of: ✅ Cloud Computing Platforms: AWS Amazon Web Services,Microsoft AZURE, Google Cloud (GCP). ✅ Server Operating Systems: Windows Server 2003-to-2012R2, Windows Server 2016 Amazon Linux, Debian, RHEL, CentOS, Ubuntu. ✅ Web servers and servlets containers: IIS, APACHE, NGINX, DOCKER ✅ Mail servers: POSTFIX, EXIM, MS Exchange 2000-to-2013, MS Exchange 2016, QMAIL,Zimbra,Mail Enable, SmarterMail, hMail ✅ Database servers: MySQL, MS SQL ✅ Virtualization: MS Hyper-V, VMware Server(ESXI), VirtualBox. ✅ Directory service: Active Directory, OpenLDAP. ✅ File servers: IIS FTP, proftpd, FileZilla FTP Server, SAMBA. ✅ Firewalls: Windows firewall,ISA/Forefront TMG, MikroTik,PFSense Zywall and other Routers; ✅ Data Storage Systems: Netapp, FAS, EMC, VNX; ✅ Monitoring ZABBIX, CACTI, NAGIOS ✅ Hosting Panels: PLESK,cPanel,Website Panel λιγότερα
Πρόσλαβε τον/την talhamq
