Network Hardware User Manual

121 Barracuda NG Network Access Client - Administrator’s Guide
9.9.1 Automatic Adapter Configuration
Set option Ask for adapter update confirmation in the Firewall Settings view (page 120) to yes (default),
if you would like to be notified, when adapter configurations change. A security alert window will then
pop-up, asking for configuration change confirmation.
Click
Untrust to add the adapter to the Adapter Objects list and assign it as Untrusted adapter. This will
create an incoming adapter block rule in the Incoming tab of the firewall rule set configuration area
(9.8.2 Rules, page 104).
Click
Trust to add the adapter to the Adapter Objects list and assign it as Trusted adapter. This will add
a reference to the trusted adapter in the
TrustedNet object and delete a possibly existing incoming
adapter block rule in the Incoming tab of the firewall rule set configuration area (9.8.2 Rules,
page 104).
Generally, the security alert window will pop up if:
• ... an adapter is used for the first time, for example if it is added to the system.
• ... the IP configuration of an adapter changes, for example if an IP address is
added or deleted.
However, it will not pop up if:
• ... an IP address is reintroduced (for example, DHCP renew).
• ... an adapter’s IP configuration is reset to 0.0.0.0.
Table 9–11 Services and protocols employed by the ADSL rule
Port Protocol Service Name Description
GRE pptp Generic Routing Encapsulation; protocol which allows an arbitrary
network protocol A to be transmitted over any other arbitrary network
protocol B, by encapsulating the packets of A within GRE packets,
which in turn are contained within packets of B
1723 TCP NETBIOS-DGM Point-to-point tunnelling protocol; control port
For a detailed description of adapter configuration options see 9.8.6 Adapters, page 108.