Xserve G5 - Technical Specifications - Apple Support
Included services
File and printer sharing: Macintosh (AFP, PAP, IPP), Windows (SMB/CIFS, IPP), UNIX and Linux (NFS, LPR/LPD), Internet (FTP, WebDAV)
Directory services: Open Directory (OpenLDAP, Kerberos, SASL), NT Domain Services (Samba 3), Backup Domain Controller (BDC)
Mail services: Postfix (SMTP), Cyrus (IMPAP, POP); webmail (SquirrelMail), mailing lists (Mailman), junk mail filtering (SpamAssassin), virus detection and quarantine (ClamAV)
Web hosting: Apache web server, JBoss application server (EJB), Apache Tomcat (JSPs, Servlets), MySQL
Media streaming: QuickTime Streaming Server (H.264, 3GPP, MPEG-4, MP3, AAC, RTP/RTSP), QuickTime Broadcaster, QTSS Publisher
Collaboration services: iChat Server, Weblog Server
Desktop management: Workgroup Manager, NetBoot, Network Install, Software Update Server
Network and security: DNS, DHCP, NAT, FireWall (IPFW2), VPN server (L2TP, PPTP), NTP
Management tools: Server Monitor (for Xserve hardware monitoring), Server Admin, Secure Shell (SSH2), SNMPv3
Distributed computing: Xgrid