Address Filters; Packet Filter Example - Planet ADSL VPN/Firewall Router ADW-4200 User Manual

NEWS(119) TCP(6)
RealAudio UDP(17)
(7070)
PING ICMP(1)
H.323(1720) TCP(6)
T.120(1503) TCP(6)
SSH(22) TCP(6)
NTP(123) UDP(17)
HTTPS(443) TCP(6)
ICQ (5190) TCP(6)
Note: Inbound: Internet to LAN, Outbound: LAN to Internet

3.6.3.4.2.2 Address Filters

There are no pre-defined address filter rules; you can add the filter rules to meet your
requirements. There are two kinds of address filters, one is inbound, the other is
outbound. The rules can be set to prevent unauthorized users (hosts or network) to
access the Internet from LAN (outbound) and/or access LAN from the Internet (inbound).

3.6.3.4.2.3 Packet filter example

The following provides an example of configuring a web server in LAN when the firewall
policy is set to High, Medium or Low security level.
The pre-defined port filter rule for HTTP is the same no matter if it is a high, medium or
low security level. The default setting is allowed for outbound access, not allowed for
inbound access. To setup a Web server located on the local network, when the firewall
policy is set, you have to configure the Port Filters setting first.
When the firewall policy is set, the port filters screenshot is as below, the inbound HTTP
access is not allowed.
119 119 NO
7070 7070 NO
N/A N/A NO
1720 1720 NO
1503 1503 NO
22 22 NO
123 123 NO
443 443 NO
5190 5190 NO
NO NO
NO YES
YES
NO
NO NO
NO NO
NO NO
YES
NO
NO NO
NO NO
Chapter 3 Configuration
YES NO
YES YES
YES
NO
YES YES
YES YES
YES YES
YES
NO
YES NO
NO YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
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