Freelancerprofil: Netzwerkadministrator - Dean Andeselic in München

Netzwerkadministrator

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Dean Andeselic | München
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Freelancer-Vorstellung

SPRACHEN

  • Deutsch (Muttersprache)
  • Englisch (Verhandlungssicher)

FÄHIGKEITEN, KENNTNISSE UND ERFAHRUNGEN

I am an IT Consultant, with in-depth, hands-on expertise in:

- Pre-sales consulting, IT Project planning, coordination with clients, MSPs, ISPs, hardware and software vendors. Project implementation.

- Professional IT Infrastructure design, planning, implementation, integration and maintenance
- Professional IT Infrastructure documentation (server/network/storage/virtualization/application - plans, diagrams, manuals)

- Performance optimization of servers, virtual environments, networks, file/storage systems.

- Virtualization (VMware vSphere, VMware Workstation, VMware Fusion, Microsoft Hyper-V, KVM, Proxmox, Citrix XenServer, XenDesktop, XenApp, VirtualBox)
- Enterprise storage systems (Dell, EMC, Fujitsu, HP/HPE)
- Enterprise server systems (Dell, HP/HPE, Fujitsu, SuperMicro)
- Enterprise Backup Systems (EMC Data Domain, HP StoreOnce)
- Backup solutions (Veeam, Backup Exec, Nakivo, Zerto, ViceVersa, Windows Server Backup and others)

- Anti-virus/anti-malware/data protection systems (Symantec Endpoint Protection, Symantec Messaging Gateway, McAfee, AVG, TrendMicro, Kaspersky, Eset, Webroot)

- Windows Server solutions (WinSrv 2000-2016, 2019 Exchange, AD, RDP/TS, Hyper-V, Skype for Business/Lync, SQL Server, GPO, DHCP, DNS, VPN, IIS, CA/PKI, Print, FTP, File server)
- Windows Desktop/Workstation systems (WinXP - Win10, Microsoft Office)
- Linux Server solutions (CentOS, RHEL, Debian, Ubuntu, Postfix, Dovecot, Sendmail, DNS/FS/NFS/CA/WEB/EMAIL/FTP/SSH, NGINX/Apache/Tomcat, PHP/MySQL/PostgreSQL, Bash)
- Network, Firewall/Routing/Switching, and SAN/NAS/FC systems (Brocade, Allied Telesis, Cisco/Meraki, Palo Alto, HP, Ubiquiti, Barracuda, Juniper, Watchguard, Fortinet/Fortigate, Sophos, Zyxel, PFSense, Sonicwall and others)
- Network protocols (TCP/IP/UDP, HTTP/HTTPS/SSL/TLS, DNS, RDP/TS, VPN/IPSEC/PPTP, FTP/FTPS, SSH, SMB/CIFS, SMTP/SMTPS)
- Email solutions (Zimbra, Exchange, OpenXchange, MailEnable, Proxmox Mail Gateway, SpamAssassin, Symantec Messaging Gateway, iRedmail, Postfix, Sendmail, Dovecot, PTR/RDNS, DNS, SPF/DKIM)
- Cloud infrastructure, Dedicated/VPS servers (G-Suite, Office 365, Vultr, DigitalOcean, OVH, Rackspace, 1 & 1, and others)
- Third party open-source and commercial software product deployment as per client request.
- PowerShell/Command line scripting, Bash scripting

- Large scale email migration from PST files to Office 365
- Large scale email migration from Exchange (2007, 2010, 2013, 2016) to Office 365, and G-Suite
- Large scale email migration from Office 365 to G-Suite
- Large scale email migration from Google Suite to Office 365
- Large scale email migration from third party providers/sources (Rackspace, NameCheap, Hostgator, GoDaddy, Digital Ocean, and others) to Office 365, G-Suite, Exchange/Postfix/Dovecot/WHM, and others.
- Large scale email systems deployment, migration, and maintenance (clustering, HA, migration of 10000+ email accounts, and 10s of TBs of data).

I also have extensive expertise in:

- IT Security Auditing
- Security hardening of Windows and Linux systems (web, application email, DNS, CA/PKI, FTP, SSH, FS)
- Full infrastructure analysis of potential security flaws/issues/vulnerabilities
- Correction of detected security issues / systems patching
- Infrastructure redesign to improve security
- Optimization of computer network security
- Implementation and integration of security solutions (firewalls - network/application/server/desktop, anti-spam, anti-malware, anti-spyware, anti-virus solutions)
- Implementation of security policies and procedures
- Implementation of personal/data/network privacy procedures and policies
- Training on security best practices for both corporate and private/home customers.

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