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GENERAL PRESENTATIONE-SERVER : INTERNET APPLICATIONS
Ed. 04 5/6Réf. 3EH 21000 BSAA
HARDWARE CONFIGURATIONS
Three CPU cards are used for Internet access: An "Enhanced" CPU (CPUe), a coprocessing CPU@ (Co-
CPU@) and a coprocessing CPU@ with a 2nd LAN interface (CoCPU@). The configurations corres-
ponding to Internet services are summarised in the table below (for more information, refer to the
"Hardware" section).
Services Card(s) used
Internet access via ISDN
- Access (on demand/permanent/Call-Callback)
-NAT
- Firewall (packet filtering)
- LAN (DHCP server, DNS server)
CPUe
Internet access via DSL modem or LAN to LAN Rou-
ting
- Permanent access
-NAT
- Firewall (packet filtering)
- LAN (DHCP server, DNS server)
CoCPU@ with a 2nd
Ethernet interface
Web cache and access control(Proxy)
-Cache
-Restrictions
CoCPU@
Electronic messaging
- Messaging server
- Messaging cache
- Internal SMTP server
CoCPU@
VPN
- Client-LAN terminal
- LAN-LAN
CoCPU@
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