LinuxZerver
Zerver features
Networking
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Firewall and routing
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Filtering
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NAT and port redirections
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VLAN 802.1Q
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Multi-gateway support, load balancing and automatic failover
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Traffic shaping (with application layer support)
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Graphical traffic rate monitoring
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Network intrusion detection system
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Dynamic DNS client
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Network infraestructure
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DHCP server
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NTP server
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DNS server
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VPN support
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Dynamic routes autoconfiguration
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HTTP proxy
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Internet cache
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User authentication
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Content filtering (with categorized lists)
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Transparent antivirus
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Intrusion Detection System
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Mail Server
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Virtual domains
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POP3 and IMAP with SSL/TLS
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Spam and antivirus filtering
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Greylisting, blacklisting, whitelisting
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Transparent POP3 proxy filter
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Web server
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Virtual hosts
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Certification authority
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Workgroup
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Centralized users and groups management
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Windows PDC support
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Network resource sharing
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File server
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Antivirus
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Print server
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Groupware: calendar, address book, webmail, wiki, etc.
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VoIP server
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Voicemail
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Conference rooms
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Calls through an external provider
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Jabber/XMMP server
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Conference rooms
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eBox User Corner for self users info updating
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Reporting and monitoring
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Dashboard for centralized service information
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Monitor CPU, load, disk space, thermal, memory
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Disk usage and RAID status
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Summarized and full system reports
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Event notification via mail, RSS or Jabber
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Software updates
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Backups (full and configuration only)