ELSA Cable User Manual

Page 107

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Description of the menu options

ELSA MicroLink Cable

R99

telnet 192.38.50.100:27

to connect directly to a news server that can be reached via a router with the IP address
192.38.50.100.

Table-
masquerading

With IP masquerading, the IP addresses of computers in the local network are rendered
invisible to external devices by means of a conversion of addresses and ports in the
router. The dynamic masquerading table displays the IP addresses from the local
network that the router is currently masking. The dynamic masquerading table can
contain up to 2048 entries and has the following layout:

The different columns have the following meaning:

Intranet-addr.: IP address of the computer in the local network

S-port: Source port for this entry

Protocol: Protocol used (TCP/UDP/ICMP)

Timeout: Time in seconds until the entry is removed from the table

Setup/IP-router-module/firewall

The filters for the IP packets are set in this menu.

The IP filters are defined in a table with the following layout:

The table fields have the following meaning:

Idx.

Unique index. This entry is required to distinguish the filters. The index may be four
characters long and selected as desired.

Active

Activates or deactivates the filter.

Prot

Protocol that is to be filtered. Possible entries are TCP, UDP, ICMP and all.

Intranet-addr.

S-port

Protocol

Timeout

10.1.1.10

1234

TCP

10

Idx.

Active Prot

Src-address

Src-netmask

S-st.

S-end

Dst-address

WIN

YES

TCP

255.255.255.255

0.0.0.0

137

139

0.0.0.0

Dst-netmask

D-st.

D-end

Action

Ifc

Direct.

MBUcst Matches

0.0.0.0

53

53

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