Skills
LAN, WAN, VLAN, IPv4, IPv6, DNS, DHCP, NTP, ISDN, Voice over IP (VoIP), CTI, Firewall, Intrusion Detection und, Prevention Systeme, Proxy-Systeme, Spam-Filter, Proxmox, Cloud-Integration, Privat, Public, Hybrid, Linux, vorwiegend Debian, Redhat und Derivate, Windows Server, Unix, Open-Source E-Maillösungen auf Linux-Basis, SMTP, POP3, IMAP4, X.400, LDAP, Microsoft-ADS, Meta-Directories, Certificate-Authority, Dienste, CA, X.500, CARDDAV, CALDAV, DEC, OSI, MIME, Umweltministerium BW, EDI, WAP, GPRS, SMTP/MIME, MS-Exchange, X.500/LDAP, IPS, Open- Source Basis (Linux, Postfix, OpenLDAP, VoIP, Cisco, Avaya, Nortel, Datawarehouse, Oracle Datenbank, Clouds, SAAS, Sonicwall, DMZ, VPN, IPSec, OpenVPN, pfSense, Cloud, Nextcloud, Dovecot