TELES VoIP Box BRI Series, Reference Manual

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3 VoIPBox installation
VoIPBox DSL / VoIPBox BRI – version 21.0.009 Page 43
3.12 Changing the IP settings
In many cases no changes on the IP settings of the VoIPBox
DSL / VoIPBox BRI are needed. Because the IP configuration of
the VoIPBox BRI is different to the IP configuration of the
VoIPBox DSL the settings are described in different chapter.
3.12.1 Change the IP settings on VoIPBox DSL
The VoIPBox DSL comes with active DHCP server and a fix IP
address (192.168.1.2/24) for both IP ports that works as a
bridge. The VoIPBox DSL works as default gateway in the lo-
cale network. The default configuration is shown in
Example
3.7
→
and compleate in Example A.5 on page 216
→
.
As shown in Example 3.7
→
the required sections for the IP
configuration of the VoIPBox DSL are the sections
[br0]
(for
the bridge mode) or
[eth1]
and
[eth2]
(for the single Ethernet
interfaces) and for the NAT settings in the first line of the
[iptables]
section. For more details please see Chapter 4.1
Configuration file ip.cfg on page 54
→
.
Example 3.7 Main sections of the ip.cfg
[br0]
IpAddress=192.168.1.2 netmask 255.255.255.0
[iptables]
iptables -t nat -A POSTROUTING -o ppp0 -s 192.168.1.2 netmask 255.255.255.0 -j MASQUERADE
iptables -P INPUT DROP
iptables -P FORWARD DROP
iptables -P OUTPUT ACCEPT
iptables -A INPUT -s 0.0.0.0/0 -p tcp --dport 4445 -i ppp0 -j ACCEPT
iptables -N block
iptables -A block -m state --state ESTABLISHED,RELATED -j ACCEPT
iptables -A block -m state --state NEW -i ! ppp0 -j ACCEPT
iptables -A block -m limit -j LOG
iptables -A block -j DROP
iptables -A INPUT -j block
iptables -A FORWARD -j block