ELSA LANCOM Business Manuel De L'utilisateur page 241

A subnetwork of the local network for which the filter is valid can be entered here.
A destination address of 0.0.0.0 means that the filter is applied to all computers. A
network mask of 0.0.0.0 means that the filter is applied to all networks (which also
means all computers).
The table entries are sorted in a similar fashion to the IP router table:
Longest network mask is placed on top.
For two network masks of equal length, the one with the smaller IP address is placed
on top.
Network masks and IP addresses of 0.0.0.0 can be used as "wildcards". Specified
computers and networks may be simultaneously subjected to targeted filtering while
others pass the router unfiltered.
The tables are processed from top to bottom. As soon as a matching filter is found, the
packet is handled accordingly.
Proxy-ARP
This option allows you to activate or deactivate the proxy ARP mechanism (default: 'Off').
This function permits data to be transmitted to IP addresses within the same logical
network as the sender, e.g. when linking individual workstation computers (teleworkers)
to the corporate network via TCP-IP.
Loc.-routing Local routing enables the router to forward data packets via the local network. The local
routing is necessary if the router, as the default gateway for the workstations receives
packets for destination networks to which it cannot establish a connection itself. If the
router cannot return the address of the appropriate router to the workstation via IMCP, it
will forward the data to the corresponding router itself (see also 'Local Routing'). Since
this setting increases network utilization in the LAN, the default setting is 'Off'.
Start-address- Start of the address pool used for the dynamic assignment of IP addresses for devices
pool
dialing in. This function is also known as IP pooling and can be used for remote access
by several field staff members, for example.
The address pool should be in the same address range as the router. If possible, ensure
that the address pool is large enough that an IP address can be assigned to every device
dialing in (e.g. one address for each of the available B channels).
If the device dialing in can initially establish a connection, only to have it terminated
again during the protocol negotiation, this is a sign of insufficient free IP addresses in the
IP pool.
End-address- End of the address pool for IP pooling.
pool
Setup/IP-router-module/Routing-method
The router offers two methods for IP routing, which can be separately set for IP and ICMP
packets. Both methods are based on the evaluation of the field 'Type-of-service' in the
IP header.
Description of the menu options
ELSA LANCOM Business
R65