Lancom Office Series Manual page 11

LANCOM DSL/I-1611 Office and LANCOM DSL/I-10 Office have got an addi-
tional ISDN connector, which is linked to the S
point-to-multipoint connection (point-to-multipoint configuration) or a
point-to-point connection (point-to-point configuration). The router automati-
cally detects your port type and D-channel protocol in use.
IP-Routing: connection establishing and administration
The router checks all IP packets in the network whether they have to be sent
to another network or computer. If a transfer is necessary, the router estab-
lishes the connection itself and closes the connection once the transfer is
completed.
Security features
A LANCOM Office has powerful security functions to prevent unauthorized
access to your company network from outside. IP masquerading hides all
workstations of a LAN behind a single public IP address. The actual identities
(IP addresses) remain concealed. Firewall filters allow specific IP addresses,
protocols and ports to be blocked. MAC address filters enable control of
access for specific workstations to the IP routing functions of the device.
Login barring prevents any "brute force attacks" and denies access to the
router after a configurable number of login attempts using an incorrect pass-
word. This measure effectively protects the configuration of the router
against repeated attacks.
DHCP
Your LANCOM Office features the following DHCP modes:
DHCP server to assign the IP addresses
•
DHCP relay agent to forward DHCP inquiries
•
Your device works already with the presetting in an ingenious automatic
DHCP mode, so that the setting-up of a LANCOM Office becomes easy both
in an existing and in a new network, regardless of its DHCP settings.
DNS server
The built-in DNS server of the router creates links between IP addresses and
names of computers or networks. In case of inquiries for known computer
names, the correct route can be assigned directly then .
Thereby, the DNS server can make use of the names and IP information pro-
vided both from the DHCP server and from the NetBIOS module.
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11
Introduction
port(s) of an ISDN
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LANCOM Office